{"id":29302,"date":"2023-10-28T10:32:27","date_gmt":"2023-10-28T10:32:27","guid":{"rendered":"https:\/\/batteryswapstation.com\/?p=29302"},"modified":"2023-10-29T05:33:10","modified_gmt":"2023-10-29T05:33:10","slug":"graphite-anode","status":"publish","type":"post","link":"https:\/\/batteryswapstation.com\/fr\/graphite-anode\/","title":{"rendered":"10 indicateurs techniques de l'anode en graphite pour batterie au lithium"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"29302\" class=\"elementor elementor-29302\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-588c9e9d e-flex e-con-boxed e-con e-parent\" data-id=\"588c9e9d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2e400eea elementor-widget elementor-widget-text-editor\" data-id=\"2e400eea\" 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\"><p><strong><b>Anode en graphite<\/b><\/strong>\u00a0Le graphite naturel et le graphite artificiel se caract\u00e9risent par une conductivit\u00e9 \u00e9lectrique \u00e9lev\u00e9e, un coefficient de diffusion des ions lithium important, une capacit\u00e9 de lithium int\u00e9gr\u00e9e \u00e9lev\u00e9e et un faible potentiel de lithium int\u00e9gr\u00e9.<\/p><p>Par rapport \u00e0 d'autres types de <span style=\"text-decoration: underline;color: #333399\"><a style=\"color: #333399;text-decoration: underline\" href=\"https:\/\/batteryswapstation.com\/fr\/lithium-ion-battery-anode-materials\/\" target=\"_blank\" rel=\"noopener\">anode de batterie lithium-ion<\/a><\/span> le graphite naturel et le graphite artificiel pr\u00e9sentent des avantages consid\u00e9rables en termes de capacit\u00e9 sp\u00e9cifique de la batterie, d'efficacit\u00e9 initiale, de dur\u00e9e de vie, de s\u00e9curit\u00e9, etc.<\/p><p>Les indices techniques des mat\u00e9riaux d'anode en graphite comprennent principalement la surface sp\u00e9cifique, la distribution de la taille des particules, la densit\u00e9 de vibration, la densit\u00e9 de compactage, la densit\u00e9 r\u00e9elle, la capacit\u00e9 sp\u00e9cifique de premi\u00e8re charge\/d\u00e9charge, le premier rendement, etc. En outre, il existe des indicateurs \u00e9lectrochimiques tels que la performance de cyclage, la performance de multiplicit\u00e9, le gonflement, etc. Cet article d\u00e9crit sp\u00e9cifiquement la connaissance des dix indicateurs techniques de l'anode en graphite.<\/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-6b14deb8 elementor-widget elementor-widget-spacer\" data-id=\"6b14deb8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-59c8ed9e elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"59c8ed9e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;exclude_headings_by_selector&quot;:[],&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<div class=\"elementor-toc__header-title\">\n\t\t\t\tTable des mati\u00e8res\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__59c8ed9e\" aria-expanded=\"true\" aria-label=\"Ouvrir la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__59c8ed9e\" aria-expanded=\"true\" aria-label=\"Fermer la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__59c8ed9e\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewbox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a2d18c4 elementor-widget elementor-widget-spacer\" data-id=\"6a2d18c4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5e983229 uael-aspect-ratio-16_9 uael-youtube-subscribe-no elementor-widget elementor-widget-uael-video\" data-id=\"5e983229\" 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\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\/m9SFoyBxHSQ?rel=0&amp;start&amp;end&amp;controls=1&amp;mute=0&amp;modestbranding=0&amp;\">\n\t\t\t\t\t<img decoding=\"async\" class=\"uael-video__thumb\" src=\"https:\/\/i.ytimg.com\/vi\/m9SFoyBxHSQ\/maxresdefault.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:\/\/batteryswapstation.com\/wp-content\/uploads\/2023\/07\/YouTube_play_button_icon_2013-2017.svg.png\" alt=\"YouTube_play_button_icon_(2013\u20132017).svg\" \/>\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-3c3ee157 elementor-widget elementor-widget-spacer\" data-id=\"3c3ee157\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-475f16da elementor-widget elementor-widget-text-editor\" data-id=\"475f16da\" 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\"><h2 id=\"specific-surface-area-of-graphite-anode\">Surface sp\u00e9cifique de l'anode en graphite<\/h2><p>Plus les particules sont petites, plus la surface sp\u00e9cifique est grande.<\/p><p>L'anode avec de petites particules et une surface sp\u00e9cifique \u00e9lev\u00e9e dispose de plus de canaux et de chemins plus courts pour la migration des ions lithium, de sorte que la performance de multiplicit\u00e9 est meilleure, mais en raison de la grande surface de contact avec l'\u00e9lectrolyte, la surface de formation du film SEI est \u00e9galement importante, et l'efficacit\u00e9 de la premi\u00e8re fois sera plus faible.<\/p><p>Les grosses particules, au contraire, pr\u00e9sentent l'avantage d'une plus grande densit\u00e9 de compactage. La surface sp\u00e9cifique du mat\u00e9riau d'anode en graphite est inf\u00e9rieure \u00e0 5m2\/g, ce qui est appropri\u00e9.<\/p><h2 id=\"particle-size-distribution-of-graphite-anode\">Distribution de la taille des particules de l'anode en graphite<\/h2><p>L'effet de la taille des particules sur leurs propri\u00e9t\u00e9s \u00e9lectrochimiques se manifeste par le fait que la taille des particules du mat\u00e9riau de l'anode affectera directement la densit\u00e9 vibratoire du mat\u00e9riau ainsi que la surface sp\u00e9cifique du mat\u00e9riau. La taille de la densit\u00e9 de vibration affectera directement la densit\u00e9 d'\u00e9nergie en vrac du mat\u00e9riau.<\/p><p>Dans le m\u00eame volume de pi\u00e8ces de remplissage, plus la taille des particules du mat\u00e9riau est importante, plus la distribution des particules est large, plus la viscosit\u00e9 de la boue est faible, plus il est possible d'am\u00e9liorer le contenu solide et de r\u00e9duire la difficult\u00e9 de l'enrobage.<\/p><p>En outre, lorsque la distribution de la taille des particules du mat\u00e9riau de l'anode en graphite est large, les petites particules du syst\u00e8me peuvent \u00eatre remplies dans les interstices des grosses particules, ce qui permet d'augmenter la densit\u00e9 de compactage de la pi\u00e8ce polaire et d'am\u00e9liorer la densit\u00e9 d'\u00e9nergie volum\u00e9trique de la batterie.<\/p><p>Les param\u00e8tres caract\u00e9ristiques de la distribution de la taille des particules du mat\u00e9riau de l'anode en graphite sont D50, D10, D90 et Dmax, dont D50 repr\u00e9sente la valeur de la taille des particules correspondant \u00e0 la quantit\u00e9 accumul\u00e9e de 50% dans la courbe de distribution cumulative de la taille des particules, qui peut \u00eatre consid\u00e9r\u00e9e comme la taille moyenne des particules du mat\u00e9riau.<\/p><p>En outre, la largeur de la distribution de la taille des particules du mat\u00e9riau peut \u00eatre exprim\u00e9e par K90, K90=(D90-D10)\/D50, plus K90 est grand, plus la distribution est large. La taille des particules du mat\u00e9riau d'anode en graphite est principalement d\u00e9termin\u00e9e par sa m\u00e9thode de pr\u00e9paration, et les exigences relatives \u00e0 ses param\u00e8tres de taille de particules dans la norme sur le graphite sont D50 (environ 20 \u03bcm), Dmax (\u226470 \u03bcm) et D10 (environ 10 \u03bcm).<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-29307\" src=\"https:\/\/batteryswapstation.com\/wp-content\/uploads\/2023\/10\/Particle-size-distribution-in-graphite-anode-material-standard.webp\" alt=\"Distribution de la taille des particules dans le mat\u00e9riau graphite-anode - norme\" width=\"1000\" height=\"500\" \/><\/p><h2 id=\"vibrational-density-of-graphite-anode\">Densit\u00e9 vibratoire de l'anode en graphite<\/h2><p>En s'appuyant sur la vibration, la poudre pr\u00e9sente une forme de pile plus compacte, la masse par unit\u00e9 de volume est mesur\u00e9e. Il s'agit d'un indicateur important pour mesurer la mati\u00e8re active, le volume des batteries lithium-ion \u00e9tant limit\u00e9, si la densit\u00e9 de vibration est \u00e9lev\u00e9e, la masse de la mati\u00e8re active par unit\u00e9 de volume est \u00e9lev\u00e9e, la capacit\u00e9 de volume est \u00e9lev\u00e9e.<\/p><h2 id=\"compacted-density-of-graphite-anode\">Densit\u00e9 comprim\u00e9e de l'anode en graphite<\/h2><p>Principalement pour la pi\u00e8ce polaire, il s'agit de la densit\u00e9 du mat\u00e9riau actif de l'anode et du liant, etc. int\u00e9gr\u00e9 dans la pi\u00e8ce polaire, apr\u00e8s laminage, densit\u00e9 compact\u00e9e = densit\u00e9 de surface \/ (l'\u00e9paisseur de la pi\u00e8ce polaire apr\u00e8s broyage moins l'\u00e9paisseur de la feuille de cuivre).<\/p><p>La densit\u00e9 de compactage est \u00e9troitement li\u00e9e \u00e0 la capacit\u00e9 sp\u00e9cifique de la pi\u00e8ce polaire, \u00e0 l'efficacit\u00e9, \u00e0 la r\u00e9sistance interne et \u00e0 la performance du cycle de la batterie. Plus la densit\u00e9 de compactage est \u00e9lev\u00e9e, plus il y a de mati\u00e8re active par unit\u00e9 de volume, plus la capacit\u00e9 est grande.<\/p><p>Cependant, dans le m\u00eame temps, les pores seront r\u00e9duits, la performance d'absorption de l'\u00e9lectrolyte devient moins bonne, la mouillabilit\u00e9 est r\u00e9duite, la r\u00e9sistance interne augmente, et l'ion lithium est difficile \u00e0 int\u00e9grer et \u00e0 d\u00e9loger, au lieu d'\u00eatre d\u00e9favorable \u00e0 l'augmentation de la capacit\u00e9. Facteurs affectant la densit\u00e9 de compactage : la taille, la distribution et la morphologie des particules ont un effet.<\/p><h2 id=\"true-density-of-graphite-anode\">Densit\u00e9 r\u00e9elle de l'anode en graphite<\/h2><p>Le poids du mat\u00e9riau solide par unit\u00e9 de volume du mat\u00e9riau d'une anode en graphite \u00e0 l'\u00e9tat absolument dense (\u00e0 l'exclusion des vides internes). La densit\u00e9 r\u00e9elle \u00e9tant mesur\u00e9e \u00e0 l'\u00e9tat dense, elle sera plus \u00e9lev\u00e9e que la densit\u00e9 vibr\u00e9e. En g\u00e9n\u00e9ral, la densit\u00e9 r\u00e9elle &gt; la densit\u00e9 compact\u00e9e &gt; la densit\u00e9 vibr\u00e9e.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-29306\" src=\"https:\/\/batteryswapstation.com\/wp-content\/uploads\/2023\/10\/Graphite-anode-material-standard-density-requirements.webp\" alt=\"Mat\u00e9riau graphite-anode - normes de densit\u00e9 - exigences\" width=\"1000\" height=\"500\" \/><\/p><h2 id=\"first-charge\/discharge-specific-capacity\">Capacit\u00e9 sp\u00e9cifique de premi\u00e8re charge\/d\u00e9charge<\/h2><p>Au cours du premier processus de charge de la batterie lithium-ion, les mol\u00e9cules de solvant de l'\u00e9lectrolyte s'incorporent \u00e0 la surface du mat\u00e9riau d'anode en graphite, et le film de passivation SEI se forme par d\u00e9composition \u00e0 la surface du mat\u00e9riau d'anode en graphite. Ce n'est que lorsque la surface de l'anode en graphite est compl\u00e8tement recouverte par le film SEI que les mol\u00e9cules de solvant ne peuvent plus \u00eatre int\u00e9gr\u00e9es et que la r\u00e9action s'arr\u00eate.<\/p><p>La g\u00e9n\u00e9ration du film SEI consomme une partie des ions lithium, qui ne peuvent pas \u00eatre d\u00e9log\u00e9s de la surface de l'anode pendant le processus de d\u00e9charge, ce qui r\u00e9duit la capacit\u00e9 sp\u00e9cifique de la premi\u00e8re d\u00e9charge.<\/p><h2 id=\"first-coulomb-efficiency\">Premi\u00e8re efficacit\u00e9 coulombienne<\/h2><p>Un indicateur important de la performance des mat\u00e9riaux d'anode en graphite est leur efficacit\u00e9 de premi\u00e8re charge\/d\u00e9charge, \u00e9galement connue sous le nom d'efficacit\u00e9 de premier coulomb. Au cours du processus de charge et de d\u00e9charge, certains ions lithium sont d\u00e9tach\u00e9s de l'\u00e9lectrode positive et int\u00e9gr\u00e9s dans l'anode, mais ne peuvent pas retourner \u00e0 l'\u00e9lectrode positive pour participer au cycle de charge et de d\u00e9charge, ce qui se traduit par une premi\u00e8re efficacit\u00e9 coulombienne &lt;100%.<\/p><p>La raison pour laquelle cette partie des ions lithium ne peut pas retourner \u00e0 l'\u00e9lectrode positive est la suivante : (1) l'existence d'une partie du lithium incorpor\u00e9 irr\u00e9versible, (2) la formation d'un film SEI \u00e0 la surface de l'anode, le film SEI est un facteur important qui affecte l'efficacit\u00e9 de Coulomb.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-29308\" src=\"https:\/\/batteryswapstation.com\/wp-content\/uploads\/2023\/10\/An-important-indicator-of-the-performance-of-graphite-anode-materials-is-their-first-chargedischarge-efficiency.webp\" alt=\"Un indicateur important de la performance des mat\u00e9riaux \u00e0 base d&#039;anode graphite est leur efficacit\u00e9 en mati\u00e8re de d\u00e9charge de la premi\u00e8re charge.\" width=\"1000\" height=\"500\" \/><\/p><p>Comme le film SEI se forme principalement \u00e0 la surface des mat\u00e9riaux d'\u00e9lectrode, la surface sp\u00e9cifique des mat\u00e9riaux d'\u00e9lectrode affecte directement la zone de formation du film SEI ; plus la surface sp\u00e9cifique est grande, plus la zone de contact avec l'\u00e9lectrolyte est grande et plus la zone de formation du film SEI est grande.<\/p><p>On estime g\u00e9n\u00e9ralement que la formation d'un film SEI stable est b\u00e9n\u00e9fique pour la charge et la d\u00e9charge de la batterie, et qu'un film SEI instable est pr\u00e9judiciable \u00e0 la r\u00e9action, car il consomme continuellement l'\u00e9lectrolyte, \u00e9paissit l'\u00e9paisseur du film SEI et augmente la r\u00e9sistance interne.<\/p><h2 id=\"cycling-performance\">Performances cyclistes<\/h2><p>En termes de performances de cyclage, le film SEI pr\u00e9sente un certain obstacle \u00e0 la diffusion des ions lithium et, avec l'augmentation du nombre de cycles, le film SEI continue \u00e0 se d\u00e9tacher, \u00e0 se d\u00e9coller et \u00e0 se d\u00e9poser sur la surface de l'anode, ce qui entra\u00eene une augmentation progressive de la r\u00e9sistance interne de l'anode en graphite, qui provoque une accumulation de chaleur et une perte de capacit\u00e9.<\/p><h2 id=\"magnification-performance-of-graphite-anode\">Performance d'agrandissement de l'anode en graphite<\/h2><p>La diffusion des ions lithium dans les mat\u00e9riaux d'anode en graphite est tr\u00e8s directionnelle, c'est-\u00e0-dire qu'elle ne peut \u00eatre ins\u00e9r\u00e9e que perpendiculairement \u00e0 la face terminale de l'aspect de l'axe C du cristal de graphite. Les mat\u00e9riaux d'anode en graphite avec de petites particules et une surface sp\u00e9cifique \u00e9lev\u00e9e ont de meilleures performances en mati\u00e8re de multiplicit\u00e9. En outre, la r\u00e9sistance de surface de l'\u00e9lectrode (provoqu\u00e9e par le film SEI) et la conductivit\u00e9 de l'\u00e9lectrode affectent \u00e9galement les performances de multiplicit\u00e9.<\/p><p>Tout comme la dur\u00e9e de vie et l'expansion, l'anode isotrope avec de nombreux canaux de transport des ions lithium r\u00e9sout le probl\u00e8me du nombre r\u00e9duit d'entr\u00e9es pour l'encastrement et le d\u00e9sencastrement et du faible taux de diffusion dans la structure anisotrope, ce qui est \u00e9galement utile pour la charge et la d\u00e9charge \u00e0 haut courant.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-29309\" src=\"https:\/\/batteryswapstation.com\/wp-content\/uploads\/2023\/10\/Multiplicity-performance-index-of-graphite-anode-materials.webp\" alt=\"Indice de performance de multiplicit\u00e9 des mat\u00e9riaux graphite-anode\" width=\"1000\" height=\"500\" \/><\/p><h2 id=\"expansion-properties\">Propri\u00e9t\u00e9s d'expansion<\/h2><p>L'expansion et la dur\u00e9e de vie sont positivement corr\u00e9l\u00e9es. L'expansion de l'anode en graphite (1) entra\u00eene une d\u00e9formation du noyau, des microfissures dans les particules de l'anode, une rupture et une r\u00e9organisation du film SEI, une consommation d'\u00e9lectrolyte et une d\u00e9t\u00e9rioration de la performance du cycle ;<\/p><p>(2) Le\u00a0<span style=\"text-decoration: underline;color: #333399\"><a style=\"color: #333399;text-decoration: underline\" href=\"https:\/\/batteryswapstation.com\/fr\/lithium-battery-separator\/\" target=\"_blank\" rel=\"noopener\"> s\u00e9parateur de piles au lithium<\/a><\/span> Il est tr\u00e8s facile de provoquer un micro-court-circuit ou une pr\u00e9cipitation de micro-lithium m\u00e9tal lors du cycle de charge et de d\u00e9charge.<\/p><p>L'ampleur de l'expansion est li\u00e9e \u00e0 l'orientation de l'anode en graphite, orientation = I004\/I110, qui peut \u00eatre calcul\u00e9e par les donn\u00e9es XRD. Le mat\u00e9riau anodique en graphite anisotrope a tendance \u00e0 \u00e9tendre le r\u00e9seau dans la m\u00eame direction (la direction de l'axe C des cristaux de graphite) pendant le processus d'incorporation du lithium, ce qui entra\u00eenera une plus grande expansion du volume de la batterie.<\/p><p>Articles connexes sur anode de lithium ion peuvent \u00e9galement voir <span style=\"text-decoration: underline;color: #333399\"><a style=\"color: #333399;text-decoration: underline\" href=\"https:\/\/batteryswapstation.com\/fr\/hard-carbon-anode\/\" target=\"_blank\" rel=\"noopener\">anode en carbone dur<\/a><\/span>, <span style=\"text-decoration: underline;color: #333399\"><a style=\"color: #333399;text-decoration: underline\" href=\"https:\/\/batteryswapstation.com\/fr\/china-silicon-based-anode-material-industry\/\" target=\"_blank\" rel=\"noopener\">anode \u00e0 base de silicium<\/a><\/span>, <span style=\"text-decoration: underline;color: #333399\"><a style=\"color: #333399;text-decoration: underline\" href=\"https:\/\/batteryswapstation.com\/fr\/silicon-based-anode-material-companies-in-china\/\" target=\"_blank\" rel=\"noopener\">les 10 premi\u00e8res entreprises de mat\u00e9riaux d'anode \u00e0 base de silicium<\/a><\/span>.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5cc0e359 e-flex e-con-boxed e-con e-parent\" data-id=\"5cc0e359\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3ba8ed70 elementor-author-box--layout-image-left elementor-author-box--link-yes elementor-author-box--avatar-yes elementor-author-box--name-yes elementor-author-box--biography-yes elementor-widget elementor-widget-author-box\" data-id=\"3ba8ed70\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"author-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-author-box\">\n\t\t\t\t\t\t\t<div  class=\"elementor-author-box__avatar\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/batteryswapstation.com\/wp-content\/uploads\/2023\/07\/cropped-mmexport1689048776805-300x300.jpg\" alt=\"Image de Lucky\" loading=\"lazy\">\n\t\t\t\t<\/div>\n\t\t\t\n\t\t\t<div class=\"elementor-author-box__text\">\n\t\t\t\t\t\t\t\t\t<div >\n\t\t\t\t\t\t<div class=\"elementor-author-box__name\">\n\t\t\t\t\t\t\tChanceux\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-author-box__bio\">\n\t\t\t\t\t\tBonjour, je m'appelle Lucky, je suis dipl\u00f4m\u00e9 d'une universit\u00e9 r\u00e9put\u00e9e en Chine, je me consacre maintenant principalement \u00e0 la r\u00e9daction d'articles sur les batteries de moto au lithium et la station d'\u00e9change de batteries, je m'engage \u00e0 offrir des services et des solutions sur la station d'\u00e9change de batteries pour diverses industries.\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<a class=\"elementor-author-box__button elementor-button elementor-size-xs\" href=\"https:\/\/batteryswapstation.com\/fr\/author\/lucky\/\">\n\t\t\t\t\t\tTous les articles\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-40c23008 elementor-widget elementor-widget-heading\" data-id=\"40c23008\" 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-default\">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-1f6e4cc0 elementor-grid-3 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-posts--thumbnail-top elementor-widget elementor-widget-posts\" data-id=\"1f6e4cc0\" 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-29082 post type-post status-publish format-standard has-post-thumbnail hentry category-battery-industry category-battery-news category-different-battery-technology tag-battery tag-cell tag-lithium\" role=\"listitem\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/batteryswapstation.com\/fr\/problems-in-lithium-battery-production\/\" 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:\/\/batteryswapstation.com\/wp-content\/uploads\/2023\/10\/10-major-problems-in-lithium-battery-production-300x225.webp\" class=\"attachment-medium size-medium wp-image-29083\" alt=\"10-probl\u00e8mes majeurs dans la production de batteries au lithium\" title=\"\" \/><\/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:\/\/batteryswapstation.com\/fr\/problems-in-lithium-battery-production\/\" target=\"&quot;_blank&quot;\">\n\t\t\t\t10 probl\u00e8mes majeurs dans la production de piles au lithium\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\t12 octobre 2023\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-27015 post type-post status-publish format-standard has-post-thumbnail hentry category-battery-industry category-battery-materials category-top-battery-list tag-battery tag-cell tag-lithium\" role=\"listitem\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/batteryswapstation.com\/fr\/top-10-lithium-battery-cathode-material-manufacturers-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:\/\/batteryswapstation.com\/wp-content\/uploads\/2023\/07\/top-10-lithium-battery-cathode-material-manufacturers-in-china-300x225.webp\" class=\"attachment-medium size-medium wp-image-27023\" alt=\"top-10-lithium-battery-cathode-material-manufacturers-in-china\" title=\"\" \/><\/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:\/\/batteryswapstation.com\/fr\/top-10-lithium-battery-cathode-material-manufacturers-in-china\/\" target=\"&quot;_blank&quot;\">\n\t\t\t\tLes 10 premiers fabricants de mat\u00e9riaux cathodiques pour batteries au lithium en Chine\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\t27 juillet 2023\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-26866 post type-post status-publish format-standard has-post-thumbnail hentry category-battery-industry category-battery-materials category-top-battery-list tag-battery tag-cell tag-lithium\" role=\"listitem\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/batteryswapstation.com\/fr\/top-10-lithium-manganate-material-manufacturer\/\" 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:\/\/batteryswapstation.com\/wp-content\/uploads\/2023\/07\/top-10-lithium-manganate-material-manufacturer-300x225.webp\" class=\"attachment-medium size-medium wp-image-26867\" alt=\"top-10-lithium-manganate-material-manufacturer\" title=\"\" \/><\/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:\/\/batteryswapstation.com\/fr\/top-10-lithium-manganate-material-manufacturer\/\" target=\"&quot;_blank&quot;\">\n\t\t\t\tTop 10 des fabricants de manganate de lithium en Chine\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\t21 juillet 2023\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\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Cet article d\u00e9crit sp\u00e9cifiquement la connaissance des dix indicateurs techniques de l'anode de graphite, leur nature et leur signification pour l'anode de graphite.<\/p>","protected":false},"author":21,"featured_media":29303,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_rtcl_gb_attr":"","footnotes":""},"categories":[224,219,223],"tags":[220,228,221],"class_list":["post-29302","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-battery-industry","category-battery-knowledge","category-battery-materials","tag-battery","tag-cell","tag-lithium"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin 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