{"id":48599,"date":"2022-07-29T14:07:15","date_gmt":"2022-07-29T14:07:15","guid":{"rendered":"https:\/\/www.takomabattery.com\/?p=48599"},"modified":"2023-12-01T01:55:45","modified_gmt":"2023-12-01T01:55:45","slug":"high-nickel-material-polycrystalline-vs-monocrystalline-why-monocrystalline-better","status":"publish","type":"post","link":"https:\/\/www.takomabattery.com\/fr\/high-nickel-material-polycrystalline-vs-monocrystalline-why-monocrystalline-better\/","title":{"rendered":"Mat\u00e9riau \u00e0 haute teneur en nickel polycristallin ou monocristallin - pourquoi le monocristallin est-il meilleur ?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"48599\" class=\"elementor elementor-48599\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-72ab11c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"72ab11c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-64b20dd\" data-id=\"64b20dd\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6eaba64 elementor-widget elementor-widget-woocommerce-breadcrumb\" data-id=\"6eaba64\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"woocommerce-breadcrumb.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<nav class=\"woocommerce-breadcrumb\" aria-label=\"Breadcrumb\" data-no-translation=\"\" data-trp-gettext=\"\">Accueil<\/nav>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a45bf36 elementor-widget elementor-widget-heading\" data-id=\"a45bf36\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Mat\u00e9riau \u00e0 haute teneur en nickel polycristallin ou monocristallin - pourquoi le monocristallin est-il meilleur ?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c0b68f elementor-widget elementor-widget-text-editor\" data-id=\"2c0b68f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div style=\"line-height: 40px\">Sur la base de <a href=\"https:\/\/www.takomabattery.com\/fr\/what-is-ternary-lithium-battery\/\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline\"><span style=\"color: #333399;text-decoration: underline\">pile ternaire au lithium<\/span><\/span><\/a> mat\u00e9riau de cathode et <span style=\"text-decoration: underline\"><a href=\"https:\/\/www.takomabattery.com\/fr\/top-5-cathode-ternary-material-companies-in-2021\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #333399;text-decoration: underline\">les 5 premi\u00e8res entreprises de mat\u00e9riaux ternaires pour cathodes<\/span><\/a><\/span> Les mat\u00e9riaux cathodiques LiNi1-x-yCoxMnyO2 (NCM, 1-x-y \u2265 0,6) monocristallins retiennent de plus en plus l'attention.<\/div><div>\u00a0<\/div><div style=\"line-height: 40px\">En raison de leur meilleure stabilit\u00e9 structurelle par rapport aux <strong>polycristallin ou monocristallin<\/strong> ils ont une dur\u00e9e de vie plus longue. Cependant, une compr\u00e9hension approfondie des m\u00e9canismes de d\u00e9gradation moins \u00e9vidents des NCM monocristallins fait encore d\u00e9faut.<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-32e7ccc uael-aspect-ratio-16_9 uael-youtube-subscribe-no elementor-widget elementor-widget-uael-video\" data-id=\"32e7ccc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"uael-video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"uael-video__outer-wrap  uael-video-type-youtube\" data-device=\"false\" data-vsticky=\"no\" data-hidedesktop=\"\" data-hidetablet=\"\" data-hidemobile=\"\" data-vsticky-viewport=\"0\" data-autoplay=\"0\">\n\t\t\t\t\t\t<div class=\"uael-video-inner-wrap\">\n\t\t\t\t<div class=\"uael-video__play\" data-src=\"https:\/\/www.youtube.com\/embed\/PTb6sAym8kk?rel=0&amp;start&amp;end&amp;controls=1&amp;mute=0&amp;modestbranding=0&amp;autoplay=1\">\n\t\t\t\t\t<img decoding=\"async\" class=\"uael-video__thumb\" src=\"https:\/\/i.ytimg.com\/vi\/PTb6sAym8kk\/hqdefault.jpg\" alt=\"\"><\/img>\n\t\t\t\t\t<div class=\"uael-video__play-icon uael-animation-\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2023\/07\/YouTube_play_button_icon_2013\u20132017.svg-21.webp\" alt=\"bouton de lecture youtube\" \/>\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-10956ea elementor-widget elementor-widget-text-editor\" data-id=\"10956ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div style=\"line-height: 40px\"><div style=\"border: 2px solid #ccc\"><ol style=\"line-height: 40px\"><li><a href=\"#The specific introduction of polycrystalline vs monocrystalline\">L'introduction sp\u00e9cifique du polycristallin par rapport au monocristallin<\/a><\/li><li><a href=\"#Study on PC-NCM622 and SC-NCM622 electrodes\">\u00c9tude sur les \u00e9lectrodes PC-NCM622 et SC-NCM622<\/a><\/li><li><a href=\"#Conclusion\">Conclusion<\/a><\/li><\/ol><\/div><p>Cependant, une compr\u00e9hension approfondie des m\u00e9canismes de d\u00e9gradation moins \u00e9vidents des MNC monocristallins fait encore d\u00e9faut. Des piles \u00e0 poche avec des cathodes LiNi0.60Co0.20Mn0.20O2 (NCM622) monocristallines et polycristallines ont \u00e9t\u00e9 compar\u00e9es apr\u00e8s 1375 cycles de d\u00e9charge\/charge sur l'anode en graphite.<\/p><h2 id=\"The specific introduction of polycrystalline vs monocrystalline\">L'introduction sp\u00e9cifique du polycristallin par rapport au monocristallin<\/h2><p>L'\u00e9paisseur de la couche d\u00e9sordonn\u00e9e cationique form\u00e9e dans la r\u00e9gion proche de la surface des particules cathodiques ne diff\u00e8re pas de mani\u00e8re significative entre les particules polycristallines et monocristallines, tandis que les fissures sont \u00e9videntes dans les particules polycristallines, mais presque absentes dans les particules monocristallines.<\/p><p>La quantification de la dissolution des m\u00e9taux de transition \u00e0 la surface de l'anode de graphite cycl\u00e9e par spectrom\u00e9trie de masse \u00e0 temps de vol a montr\u00e9 que la quantit\u00e9 de dissolution du NCM622 monocristallin \u00e9tait fortement r\u00e9duite. De m\u00eame, quantifi\u00e9e par spectrom\u00e9trie de masse \u00e9lectrochimique, l'\u00e9volution du gaz de dioxyde de carbone du NCM622 monocristallin est \u00e9galement fortement r\u00e9duite au cours des deux premiers cycles.<\/p><p>B\u00e9n\u00e9ficiant de ces avantages, la cellule \u00e0 poche graphite\/monocristal NMC622 a une capacit\u00e9 cathodique de 6 mAh cm-2 et un taux de r\u00e9tention de capacit\u00e9 de 83% apr\u00e8s 3000 cycles \u00e0 4,2 V. La comparaison entre polycristallin et monocristallin souligne le potentiel du NCM622 monocristallin en tant que mat\u00e9riau cathodique pour les batteries Li-ion de la prochaine g\u00e9n\u00e9ration.<\/p><h2 id=\"Study on PC-NCM622 and SC-NCM622 electrodes\">\u00c9tude sur les \u00e9lectrodes PC-NCM622 et SC-NCM622<\/h2><p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-48603\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Morphological-and-structural-characteristics-of-PC-NCM622-and-SC-NCM622.jpg\" alt=\"Caract\u00e9ristiques morphologiques et structurelles du PC-NCM622 et du SC-NCM622\" width=\"1000\" height=\"1020\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Morphological-and-structural-characteristics-of-PC-NCM622-and-SC-NCM622.jpg 1000w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Morphological-and-structural-characteristics-of-PC-NCM622-and-SC-NCM622-294x300.jpg 294w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Morphological-and-structural-characteristics-of-PC-NCM622-and-SC-NCM622-768x783.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Morphological-and-structural-characteristics-of-PC-NCM622-and-SC-NCM622-600x612.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p><p style=\"text-align: center\"><span style=\"color: #999999\">Figure 1 - Caract\u00e9ristiques morphologiques et structurelles du PC-NCM622 et du SC-NCM622.<\/span><\/p><p><img decoding=\"async\" class=\"aligncenter size-full wp-image-48602\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Galvanostatic-cycling-of-1C1D-pouch-cells.jpg\" alt=\"Cycle galvanostatique des cellules de la poche 1C1D\" width=\"1000\" height=\"674\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Galvanostatic-cycling-of-1C1D-pouch-cells.jpg 1000w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Galvanostatic-cycling-of-1C1D-pouch-cells-300x202.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Galvanostatic-cycling-of-1C1D-pouch-cells-768x518.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Galvanostatic-cycling-of-1C1D-pouch-cells-600x404.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p><p style=\"text-align: center\"><span style=\"color: #999999\">Figure 2 - Cycle galvanostatique de cellules de poche 1C\/1D \u00e0 25\u00b0C.<\/span><\/p><p><img decoding=\"async\" class=\"aligncenter size-full wp-image-48605\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/SC-NCM622-electrodes.jpg\" alt=\"\u00c9lectrodes SC-NCM622\" width=\"1000\" height=\"886\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/SC-NCM622-electrodes.jpg 1000w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/SC-NCM622-electrodes-300x266.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/SC-NCM622-electrodes-768x680.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/SC-NCM622-electrodes-600x532.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p><p style=\"text-align: center\"><span style=\"color: #999999\">Figure 3-a,b) Images MEB en coupe transversale des \u00e9lectrodes SC-NCM622 et e,f) PC-NCM622, obtenues par broyage ionique. Images HAADF-STEM des \u00e9lectrodes cycl\u00e9es c, d) PC-NCM622 et g, h) SC-NCM622. i) Illustration sch\u00e9matique de la d\u00e9gradation des particules PC-NCM622 et j) SC-NCM622 apr\u00e8s un cyclage de longue dur\u00e9e.<\/span><\/p><p>La figure 3a,b montre les images SEM de la section transversale de l'\u00e9lectrode PC-NCM622 broy\u00e9e par ionisation \u00e0 deux grossissements diff\u00e9rents, montrant une formation s\u00e9v\u00e8re de fissures, entra\u00eenant l'effondrement complet de plusieurs particules secondaires. Par cons\u00e9quent, la formation de fissures intergranulaires est la principale raison de l'affaiblissement de la capacit\u00e9 et de la polarisation de la tension observ\u00e9s. La nouvelle surface est expos\u00e9e \u00e0 l'\u00e9lectrolyte le long de la fissure, ce qui exacerbe et acc\u00e9l\u00e8re la d\u00e9gradation.<\/p><p>Outre les fissures, des trous sont visibles sur les paillettes extraites avec un faisceau d'ions focalis\u00e9s de l'\u00e9lectrode PC-NCM622 cycl\u00e9e dans l'image de microscopie \u00e9lectronique \u00e0 transmission par balayage \u00e0 champ sombre annulaire \u00e0 angle \u00e9lev\u00e9 (HAADF-STEM) de la figure 3c.<\/p><p>Il est int\u00e9ressant de noter que ces cavit\u00e9s sont situ\u00e9es \u00e0 l'int\u00e9rieur des particules primaires, peut-\u00eatre cr\u00e9\u00e9es par la dissolution des m\u00e9taux de transition. L'\u00e9crasement des particules domine la polarisation de la tension dans le PC-NCM622.<\/p><p>La figure 3 i,j montre les diff\u00e9rences dans les m\u00e9canismes de d\u00e9gradation des particules PC-NCM622 et SC-NCM622. Apr\u00e8s un cycle prolong\u00e9, la formation de fissures importantes a entra\u00een\u00e9 la pulv\u00e9risation des particules PC-NCM622, alors que seules quelques microfissures sont apparues dans les particules SC-NCM622.<\/p><p>En outre, la couche d\u00e9sordonn\u00e9e cationique (indiqu\u00e9e en violet) n'est form\u00e9e qu'\u00e0 la surface des particules SC-NCM622, mais p\u00e9n\u00e8tre \u00e0 l'int\u00e9rieur des particules PC-NCM622 le long des fissures intergranulaires qui p\u00e9n\u00e8trent dans l'\u00e9lectrolyte.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-48606\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/TOF-SIMS-chemical-map-of-surface-cycling-of-graphite-anodes.jpg\" alt=\"Carte chimique TOF-SIMS des cycles de surface des anodes en graphite\" width=\"1000\" height=\"618\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/TOF-SIMS-chemical-map-of-surface-cycling-of-graphite-anodes.jpg 1000w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/TOF-SIMS-chemical-map-of-surface-cycling-of-graphite-anodes-300x185.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/TOF-SIMS-chemical-map-of-surface-cycling-of-graphite-anodes-768x475.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/TOF-SIMS-chemical-map-of-surface-cycling-of-graphite-anodes-600x371.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p><p style=\"text-align: center\"><span style=\"color: #999999\">Figure 4 - Carte chimique TOF-SIMS du cycle de surface des anodes en graphite.<\/span><\/p><p>Les intensit\u00e9s des signaux TOF-SIMS int\u00e9gr\u00e9es dans l'espace et extraites de la carte chimique TOF-SIMS ont indiqu\u00e9 que le SC-NCM622 avait r\u00e9duit de mani\u00e8re significative la dissolution des m\u00e9taux de transition (Fig. 4c,d). La dissolution des m\u00e9taux de transition est responsable de la formation de couches de surface d\u00e9sordonn\u00e9es cationiques sur les particules de NCM.<\/p><p>En outre, l'ajout d'esp\u00e8ces de Ni, Co et Mn au SEI cultiv\u00e9 \u00e0 la surface de l'anode graphitique augmente la conductivit\u00e9 \u00e9lectronique du SEI, d\u00e9clenchant la croissance continue du SEI et la conversion du Li actif en Li mort, r\u00e9duisant ainsi la capacit\u00e9 r\u00e9versible de la batterie.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-48604\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/On-line-electrochemical-mass-spectrometer-tracking-CO2-and-O2-gas-evolution-of-PC-NCM622-and-SC-NCM622-during-the-first-two-cycles.jpg\" alt=\"Spectrom\u00e8tre de masse \u00e9lectrochimique en ligne permettant de suivre l&#039;\u00e9volution des gaz CO2 et O2 du PC-NCM622 et du SC-NCM622 au cours des deux premiers cycles.\" width=\"1000\" height=\"570\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/On-line-electrochemical-mass-spectrometer-tracking-CO2-and-O2-gas-evolution-of-PC-NCM622-and-SC-NCM622-during-the-first-two-cycles.jpg 1000w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/On-line-electrochemical-mass-spectrometer-tracking-CO2-and-O2-gas-evolution-of-PC-NCM622-and-SC-NCM622-during-the-first-two-cycles-300x171.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/On-line-electrochemical-mass-spectrometer-tracking-CO2-and-O2-gas-evolution-of-PC-NCM622-and-SC-NCM622-during-the-first-two-cycles-768x438.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/On-line-electrochemical-mass-spectrometer-tracking-CO2-and-O2-gas-evolution-of-PC-NCM622-and-SC-NCM622-during-the-first-two-cycles-600x342.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p><p style=\"text-align: center\"><span style=\"color: #999999\">Figure 5 - Spectrom\u00e8tre de masse \u00e9lectrochimique en ligne (OEMS) permettant de suivre l'\u00e9volution du CO2 et de l'O2 dans les gaz du PC-NCM622 et du SC-NCM622 au cours des deux premiers cycles.<\/span><\/p><p>Spectrom\u00e9trie de masse \u00e9lectrochimique en ligne (OEMS) pour quantifier le d\u00e9gagement gazeux de dioxyde de carbone et d'oxyg\u00e8ne dans les \u00e9lectrodes PC-NCM622 et SC-NCM622 au cours des deux premiers cycles. Le taux instantan\u00e9 maximal de lib\u00e9ration de dioxyde de carbone de l'\u00e9lectrode PC-NCM622 est 1,6 fois sup\u00e9rieur \u00e0 celui de l'\u00e9lectrode SC-NCM622, et la quantit\u00e9 combin\u00e9e est environ 3 fois sup\u00e9rieure \u00e0 celle de l'\u00e9lectrode SC-NCM622. Il est int\u00e9ressant de noter qu'au cours du deuxi\u00e8me cycle, l'\u00e9lectrode SC-NCM622 n'a pas d\u00e9tect\u00e9 de d\u00e9gagement de gaz CO2, alors que l'\u00e9lectrode PC-NCM622 a encore d\u00e9gag\u00e9 du gaz CO2 de mani\u00e8re transitoire au cours du deuxi\u00e8me cycle. Cette diff\u00e9rence peut \u00eatre partiellement attribu\u00e9e aux concentrations plus \u00e9lev\u00e9es de Li2CO3 et de LiOH \u00e0 la surface de l'\u00e9lectrode PC-NCM622.<\/p><p>Li2CO3 peut \u00eatre \u00e0 la fois oxyd\u00e9 \u00e9lectrochimiquement et d\u00e9compos\u00e9 chimiquement, tandis que LiOH peut catalyser la d\u00e9composition du carbonate d'\u00e9thyl\u00e8ne par un processus d'ouverture de cycle, les deux d\u00e9clenchant la lib\u00e9ration de CO2. Par rapport \u00e0 la quantit\u00e9 mesur\u00e9e dans le SC-NCM622, la quantit\u00e9 totale de Li2CO3 et de LiOH dans le PC-NCM622 est environ deux fois plus \u00e9lev\u00e9e.<\/p><p>En analysant les images SEM en coupe transversale des figures 5e et f, on peut confirmer que davantage de surfaces de NCM sont expos\u00e9es \u00e0 l'\u00e9lectrolyte. Au cours du deuxi\u00e8me cycle, davantage de fissures se sont form\u00e9es, exposant une plus grande partie de la surface du NCM, ce qui correspond \u00e0 l'\u00e9volution du CO2 observ\u00e9e au cours du deuxi\u00e8me cycle (Fig. 5g,h). En revanche, le SC-NCM622 n'a pas d\u00e9gag\u00e9 de dioxyde de carbone au cours du deuxi\u00e8me cycle car aucune surface suppl\u00e9mentaire de NCM n'a \u00e9t\u00e9 expos\u00e9e \u00e0 l'\u00e9lectrolyte (Fig. 5i,j).<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-48601\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Density-versus-applied-pressure.jpg\" alt=\"Densit\u00e9 en fonction de la pression appliqu\u00e9e\" width=\"1000\" height=\"672\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Density-versus-applied-pressure.jpg 1000w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Density-versus-applied-pressure-300x202.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Density-versus-applied-pressure-768x516.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Density-versus-applied-pressure-600x403.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p><p style=\"text-align: center\"><span style=\"color: #999999\">Figure 6-a) Densit\u00e9 en fonction de la pression appliqu\u00e9e, et b-e) images SEM en coupe transversale de PC-NCM622 et f-i) SC-NCM622 \u00e0 diff\u00e9rentes pressions.<\/span><\/p><p>Les tests montrent que la densit\u00e9 de l'\u00e9lectrode SC-NCM622 est l\u00e9g\u00e8rement sup\u00e9rieure \u00e0 celle de l'\u00e9lectrode PC-NCM622, ce qui est b\u00e9n\u00e9fique pour la densit\u00e9 d'\u00e9nergie volum\u00e9trique de la batterie. La structure des particules SC-NCM622 peut r\u00e9sister \u00e0 des pressions plus \u00e9lev\u00e9es que les particules PC-NCM622 et atteindre une densit\u00e9 plus \u00e9lev\u00e9e (3,92 contre 3,68 g cm-3).<\/p><h2 id=\"Conclusion\">Conclusion<\/h2><p><strong>1.<\/strong> Les particules SC-NCM622 de 2 \u00e0 4 microns sont plus r\u00e9sistantes \u00e0 la formation de fissures pendant le cyclage que les particules PC-NCM622 de 10 microns, ce qui conf\u00e8re \u00e0 la batterie en pochette une excellente stabilit\u00e9 \u00e0 long terme pendant le cyclage.<br \/><strong>2.<\/strong>L'\u00e9paisseur de la couche de surface d\u00e9sordonn\u00e9e cationique du SC-NCM622 et du PC-NCM622 est comparable, mais pour le PC-NCM622, la couche se forme \u00e9galement le long des fissures intergranulaires.<br \/><strong>3.<\/strong>Lorsque le PC-NCM622 a \u00e9t\u00e9 soumis \u00e0 un cycle, la dissolution du m\u00e9tal de transition d\u00e9tect\u00e9e \u00e0 la surface du SEI form\u00e9 sur le graphite \u00e9tait beaucoup plus prononc\u00e9e que lorsque le SC-NCM622 a \u00e9t\u00e9 soumis \u00e0 un cycle.<br \/><strong>4.<\/strong>En outre, la polarisation de la tension du PC-NCM622 augmente plus rapidement, ce qui est principalement d\u00fb \u00e0 l'\u00e9crasement des particules caus\u00e9 par la fissuration des particules de PC-NCM622, ce qui est \u00e9galement coh\u00e9rent avec l'\u00e9volution du CO observ\u00e9e au cours des deux premiers cycles.<br \/><strong>5.<\/strong>Le mat\u00e9riau NCM622 pr\u00e9sent\u00e9 ici n'utilise aucun dopant ni couche protectrice, ce qui montre que la m\u00e9thode monocristalline est tr\u00e8s efficace pour att\u00e9nuer la d\u00e9gradation au niveau de la cathode par rapport \u00e0 la m\u00e9thode polycristalline ou monocristalline.<\/p><p>Ce n'est pas seulement l'application du proc\u00e9d\u00e9 monocristallin qui motive l'optimisation continue des mat\u00e9riaux cathodiques ternaires, mais aussi la haute teneur en nickel et la haute r\u00e9sistance \u00e0 la corrosion. <a href=\"https:\/\/www.takomabattery.com\/fr\/the-ultimate-energy-source-high-voltage-battery\/\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline\"><span style=\"color: #333399;text-decoration: underline\">batterie haute tension<\/span><\/span><\/a>. Pour plus d'informations, veuillez consulter les articles connexes suivants.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-85d94ea elementor-widget elementor-widget-heading\" data-id=\"85d94ea\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-heading-title elementor-size-large\">Poste connexe<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74f916a elementor-grid-3 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-posts--thumbnail-top elementor-widget elementor-widget-posts\" data-id=\"74f916a\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;classic_columns&quot;:&quot;3&quot;,&quot;classic_columns_tablet&quot;:&quot;2&quot;,&quot;classic_columns_mobile&quot;:&quot;1&quot;,&quot;classic_row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:35,&quot;sizes&quot;:[]},&quot;classic_row_gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;classic_row_gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"posts.classic\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-posts-container elementor-posts elementor-posts--skin-classic elementor-grid\" role=\"list\">\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-47369 post type-post status-publish format-standard has-post-thumbnail hentry category-battery-industry category-battery-materials category-lithium-ion-battery-industry category-ternary-lithium-battery tag-battery tag-battery-cell tag-lithium-battery tag-lithium-ion-battery\" role=\"listitem\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/www.takomabattery.com\/fr\/high-nickelization-high-voltage-and-single-crystallization-of-ternary-cathode-materials\/\" tabindex=\"-1\" target=\"&quot;_blank&quot;\">\n\t\t\t<div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/High-nickelization-high-voltage-and-single-crystallization-of-ternary-cathode-materials-300x225.jpg\" class=\"attachment-medium size-medium wp-image-47370\" alt=\"Nickelage \u00e9lev\u00e9, haute tension et cristallisation unique de mat\u00e9riaux cathodiques ternaires\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/High-nickelization-high-voltage-and-single-crystallization-of-ternary-cathode-materials-300x225.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/High-nickelization-high-voltage-and-single-crystallization-of-ternary-cathode-materials-768x576.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/High-nickelization-high-voltage-and-single-crystallization-of-ternary-cathode-materials-600x450.jpg 600w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/High-nickelization-high-voltage-and-single-crystallization-of-ternary-cathode-materials.jpg 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<div class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/www.takomabattery.com\/fr\/high-nickelization-high-voltage-and-single-crystallization-of-ternary-cathode-materials\/\" target=\"&quot;_blank&quot;\">\n\t\t\t\tNickelage \u00e9lev\u00e9, haute tension et cristallisation unique de mat\u00e9riaux cathodiques ternaires\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\t20 juillet 2022\t\t<\/span>\n\t\t\t\t<span class=\"elementor-post-avatar\">\n\t\t\tUn commentaire\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-45703 post type-post status-publish format-standard has-post-thumbnail hentry category-best-list category-electric-car-battery category-nimh-battery tag-battery tag-battery-cell tag-lithium-battery tag-lithium-ion-battery\" role=\"listitem\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/www.takomabattery.com\/fr\/top-10-high-nickel-battery-manufacturers-in-the-world-in-2022\/\" tabindex=\"-1\" target=\"&quot;_blank&quot;\">\n\t\t\t<div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Top-10-high-nickel-battery-manufacturers-1-300x225.jpg\" class=\"attachment-medium size-medium wp-image-45810\" alt=\"Les 10 premiers fabricants de piles \u00e0 haute teneur en nickel\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Top-10-high-nickel-battery-manufacturers-1-300x225.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Top-10-high-nickel-battery-manufacturers-1-768x576.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Top-10-high-nickel-battery-manufacturers-1-600x450.jpg 600w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/07\/Top-10-high-nickel-battery-manufacturers-1.jpg 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<div class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/www.takomabattery.com\/fr\/top-10-high-nickel-battery-manufacturers-in-the-world-in-2022\/\" target=\"&quot;_blank&quot;\">\n\t\t\t\tLes 10 premiers fabricants mondiaux de piles \u00e0 haute teneur en nickel en 2022\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\t2 juillet 2022\t\t<\/span>\n\t\t\t\t<span class=\"elementor-post-avatar\">\n\t\t\tAucun commentaire\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-37199 post type-post status-publish format-standard has-post-thumbnail hentry category-battery-industry category-battery-materials category-best-list tag-battery tag-battery-cell tag-lithium-battery tag-lithium-ion-battery\" role=\"listitem\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/www.takomabattery.com\/fr\/top-5-ncm811-high-nickel-ternary-cathode-material-companies-in-china\/\" tabindex=\"-1\" target=\"&quot;_blank&quot;\">\n\t\t\t<div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"225\" src=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/03\/Top-5-NCM811-high-nickel-ternary-cathode-material-companies-in-China-300x225.jpg\" class=\"attachment-medium size-medium wp-image-37200\" alt=\"Top 5 des entreprises chinoises de mat\u00e9riaux cathodiques ternaires \u00e0 haute teneur en nickel NCM811\" srcset=\"https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/03\/Top-5-NCM811-high-nickel-ternary-cathode-material-companies-in-China-300x225.jpg 300w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/03\/Top-5-NCM811-high-nickel-ternary-cathode-material-companies-in-China-768x576.jpg 768w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/03\/Top-5-NCM811-high-nickel-ternary-cathode-material-companies-in-China-600x450.jpg 600w, https:\/\/www.takomabattery.com\/wp-content\/uploads\/2022\/03\/Top-5-NCM811-high-nickel-ternary-cathode-material-companies-in-China.jpg 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<div class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/www.takomabattery.com\/fr\/top-5-ncm811-high-nickel-ternary-cathode-material-companies-in-china\/\" target=\"&quot;_blank&quot;\">\n\t\t\t\tTop 5 des entreprises chinoises de mat\u00e9riaux cathodiques ternaires \u00e0 haute teneur en nickel NCM811\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\t31 mars 2022\t\t<\/span>\n\t\t\t\t<span class=\"elementor-post-avatar\">\n\t\t\tAucun commentaire\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Mat\u00e9riau \u00e0 haute teneur en nickel polycristallin ou monocristallin - pourquoi le monocristallin est-il meilleur ? Les mat\u00e9riaux de cathode pour batteries au lithium ternaires et la technologie des cinq meilleures entreprises de mat\u00e9riaux ternaires pour cathodes \u00e9tant continuellement am\u00e9lior\u00e9s, les mat\u00e9riaux de cathode LiNi1-x-yCoxMnyO2 (NCM, 1-x-y \u2265 0,6) monocristallins retiennent de plus en plus l'attention. En raison de leur meilleure stabilit\u00e9 structurelle par rapport aux cellules polycristallines ou monocristallines, ils sont plus faciles \u00e0 utiliser que les autres mat\u00e9riaux.<\/p>","protected":false},"author":1,"featured_media":48624,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[211,168,151],"tags":[7,117,130,153],"class_list":["post-48599","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lithium-battery-technology","category-lithium-ion-battery-industry","category-lithium-ion-battery-knowledge","tag-battery","tag-battery-cell","tag-lithium-battery","tag-lithium-ion-battery"],"modified_by":"tycorun666","_links":{"self":[{"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/posts\/48599","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/comments?post=48599"}],"version-history":[{"count":0,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/posts\/48599\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/media\/48624"}],"wp:attachment":[{"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/media?parent=48599"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/categories?post=48599"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.takomabattery.com\/fr\/wp-json\/wp\/v2\/tags?post=48599"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}