{"id":462214,"date":"2026-08-21T14:47:19","date_gmt":"2026-08-21T18:47:19","guid":{"rendered":"https:\/\/autosphere.ca\/?p=462214"},"modified":"2026-08-21T14:47:19","modified_gmt":"2026-08-21T18:47:19","slug":"nouvelle-technologie-pour-accroitre-de-10-la-densite-des-batteries-des-ve","status":"publish","type":"post","link":"https:\/\/autosphere.ca\/fr\/concessionnaires\/2026\/08\/21\/nouvelle-technologie-pour-accroitre-de-10-la-densite-des-batteries-des-ve\/","title":{"rendered":"Nouvelle technologie pour accro\u00eetre de 10 % la densit\u00e9 des batteries des V\u00c9"},"content":{"rendered":"<p dir=\"ltr\"><strong>Le g\u00e9ant nippon des mat\u00e9riaux Asahi Kasei annonce la mise au point d&rsquo;une technologie brevet\u00e9e de pr\u00e9-lithiation destin\u00e9e aux batteries lithium-ion haute tension \u00e9quip\u00e9es d&rsquo;anodes en silicium.<\/strong><\/p>\n<p dir=\"ltr\"><span>Alors que l&rsquo;int\u00e9gration du silicium dans les anodes permet d&rsquo;augmenter la densit\u00e9 d&rsquo;\u00e9nergie, ce mat\u00e9riau subit une perte de capacit\u00e9 irr\u00e9versible importante lors du tout premier cycle de charge-d\u00e9charge. Pour compenser ce ph\u00e9nom\u00e8ne sans surcharger la cathode en mat\u00e9riaux co\u00fbteux, Asahi Kasei a d\u00e9velopp\u00e9 un additif d&rsquo;\u00e9lectrolyte sp\u00e9cifique. Cet additif permet de d\u00e9composer le carbonate de lithium, un compos\u00e9 \u00e9conomique et largement utilis\u00e9, aux tensions de fonctionnement standard de la cellule afin de fournir un apport sacrificiel d&rsquo;ions lithium.<\/span><\/p>\n<p dir=\"ltr\"><span>Des essais internes r\u00e9alis\u00e9s sur des cellules NMC (nickel-mangan\u00e8se-cobalt) comportant une anode compos\u00e9e \u00e0 10 % de monoxyde de silicium (SiO) et \u00e0 90 % de graphite ont d\u00e9montr\u00e9 une augmentation de 10 % de la densit\u00e9 \u00e9nerg\u00e9tique, tout en prolongeant la dur\u00e9e de vie des cycles de charge.<\/span><\/p>\n<p dir=\"ltr\"><strong>Incr\u00e9ments techniques et mod\u00e8le commercial :\u00a0<\/strong><\/p>\n<ul>\n<li dir=\"ltr\" aria-level=\"1\">\n<p dir=\"ltr\" role=\"presentation\"><span>R\u00e9duction des co\u00fbts : Exploitation du carbonate de lithium conventionnel \u00e0 la place de m\u00e9thodes de pr\u00e9-lithiation complexes et co\u00fbteuses.<\/span><\/p>\n<\/li>\n<li dir=\"ltr\" aria-level=\"1\">\n<p dir=\"ltr\" role=\"presentation\"><span>Int\u00e9gration sans retooling : Mise en \u0153uvre sur les lignes de fabrication de batteries existantes sans modification majeure des \u00e9quipements.<\/span><\/p>\n<\/li>\n<li dir=\"ltr\" aria-level=\"1\">\n<p dir=\"ltr\" role=\"presentation\"><span>Licences mondiales : Commercialisation sous forme de transferts de licence, avec un objectif d&rsquo;au moins 10 accords conclus d&rsquo;ici 2027.\u00a0<\/span><\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><span>\u00ab Cette avanc\u00e9e permet d&rsquo;exploiter pleinement le potentiel des anodes au silicium tout en maintenant des co\u00fbts avantageux par wattheure \u00bb, indique le groupe dans son communiqu\u00e9.<\/span><\/p>\n<p dir=\"ltr\"><span>Pour les \u00e9quipementiers automobiles, fabricants de cellules et partenaires de la fili\u00e8re batterie au pays, o\u00f9 Asahi Kasei \u00e9rige une usine de composants de batteries de 1,7 milliard $ en Ontario, cette technologie renforce l&rsquo;efficacit\u00e9 des v\u00e9hicules \u00e9lectriques de prochaine g\u00e9n\u00e9ration.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le g\u00e9ant nippon des mat\u00e9riaux Asahi Kasei annonce la mise au point d&rsquo;une technologie brevet\u00e9e de pr\u00e9-lithiation destin\u00e9e aux batteries lithium-ion haute tension \u00e9quip\u00e9es d&rsquo;anodes en silicium. Alors que l&rsquo;int\u00e9gration du silicium dans les anodes permet d&rsquo;augmenter la densit\u00e9 d&rsquo;\u00e9nergie, ce mat\u00e9riau subit une perte de capacit\u00e9 irr\u00e9versible importante lors du tout premier cycle de&#8230;<\/p>\n","protected":false},"author":526,"featured_media":462215,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[823,646],"tags":[10462],"class_list":["post-462214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-concessionnaires-communique","category-concessionnaires","tag-asahi-kasei"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Nouvelle technologie pour accro\u00eetre de 10 % la densit\u00e9 des batteries des V\u00c9 - Autosphere<\/title>\n<meta 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