{"id":5893,"date":"2024-02-13T16:09:58","date_gmt":"2024-02-13T15:09:58","guid":{"rendered":"https:\/\/parlonstechs.com\/all\/?p=5893"},"modified":"2024-02-13T16:10:46","modified_gmt":"2024-02-13T15:10:46","slug":"des-scientifiques-ont-decouvert-une-solution-simple-pour-booster-lautonomie-des-voitures-electriques","status":"publish","type":"post","link":"https:\/\/parlonstechs.com\/all\/2024\/02\/13\/des-scientifiques-ont-decouvert-une-solution-simple-pour-booster-lautonomie-des-voitures-electriques\/","title":{"rendered":"Des scientifiques ont d\u00e9couvert une solution simple pour booster l\u2019autonomie des voitures \u00e9lectriques"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/cdn.futura-sciences.com\/cdn-cgi\/image\/width=1024,quality=50,format=auto\/sources\/images\/booster-batteries-voiture-electrique.jpg\" alt=\"Des chercheurs de l\u2019universit\u00e9 de Stanford (\u00c9tats-Unis) ont d\u00e9couvert qu\u2019un peu de repos peut am\u00e9liorer de mani\u00e8re spectaculaire les performances des batteries lithium-m\u00e9tal. \u00a9 XD pour Futura avec DALL-E\" \/><\/p>\n<h2>Des batteries qui permettraient \u00e0 nos voitures \u00e9lectriques de parcourir plus de 1\u2009000\u00a0kilom\u00e8tres sans avoir \u00e0 \u00eatre recharg\u00e9es. Tout le monde en r\u00eave. Et des chercheurs viennent de d\u00e9couvrir un moyen, justement, de booster cette autonomie. Un moyen \u00e9tonnamment simple.<\/h2>\n<p>&nbsp;<\/p>\n<p>Dans nos\u00a0voitures \u00e9lectriques, aujourd&rsquo;hui, on trouve des batteries dites\u00a0<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 xReLA\" aria-expanded=\"false\">lithium<\/span><\/span>-|a5c2af1c09f7f3c0444fc6371005aafc| Leur autonomie d\u00e9passe difficilement les 500\u00a0kilom\u00e8tres. Mais les constructeurs \u00e9voquent une autre technologie qui pourrait nous permettre de rouler sans recharger pendant presque 1\u2009200\u00a0kilom\u00e8tres. La technologie dite lithium-<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 xReLA\" aria-expanded=\"false\">m\u00e9tal<\/span><\/span>. Alors pourquoi n&rsquo;est-elle pas encore int\u00e9gr\u00e9e \u00e0 nos v\u00e9hicules \u00e9lectriques\u2009? Parce que ce type de batterie perd rapidement sa capacit\u00e9 \u00e0 stocker de l&rsquo;<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 xReLA\" aria-expanded=\"false\">\u00e9nergie<\/span><\/span>\u00a0apr\u00e8s relativement peu de cycles de charge et de d\u00e9charge.<\/p>\n<p>&nbsp;<\/p>\n<p>Les ing\u00e9nieurs travaillent sur la question. Et des chercheurs de l&rsquo;universit\u00e9 de Stanford (\u00c9tats-Unis) proposent aujourd&rsquo;hui une solution \u00e9tonnante \u00e0 ce probl\u00e8me. Leurs travaux publi\u00e9s dans la revue\u00a0<a title=\"Recovery of Isolated Lithium Through Discharged State Calendar Aging\" href=\"https:\/\/dx.doi.org\/10.1038\/s41586-023-06992-8\" target=\"_blank\" rel=\"noopener\"><em>Nature<\/em><\/a>\u00a0montrent qu&rsquo;il suffit de vider la batterie et de la laisser reposer pendant quelques heures pour restaurer sa capacit\u00e9, augmenter sa\u00a0dur\u00e9e de vie\u00a0et am\u00e9liorer ses performances globales. Seule manipulation \u00e0 faire, donc, une reprogrammation du logiciel de gestion de la batterie. Une manipulation simple et peu co\u00fbteuse.<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">Engineers have created a new type of battery that can charge much faster than current batteries. This battery, called a lithium-metal battery, could revolutionize the electric vehicle industry. \ud83d\udd0b\ud83e\udeab <a href=\"https:\/\/t.co\/EGyP4nxHEe\">pic.twitter.com\/EGyP4nxHEe<\/a><\/p>\n<p>&mdash; Michael Rutchland (@MRutchland) <a href=\"https:\/\/twitter.com\/MRutchland\/status\/1718487573688160719?ref_src=twsrc%5Etfw\">October 29, 2023<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"identifier-le-probleme-des-batteries-lithiummetal\">Identifier le probl\u00e8me des batteries lithium-m\u00e9tal<\/h2>\n<p>Les chercheurs estiment que leurs travaux pourraient aider \u00e0 orienter d&rsquo;autres \u00e9tudes qui contribueraient \u00e0 une commercialisation g\u00e9n\u00e9ralis\u00e9e des\u00a0batteries lithium-m\u00e9tal. Et ce serait une bonne nouvelle \u00e0 plus d&rsquo;un titre. Une batterie lithium-m\u00e9tal, en effet, peut stocker deux fois l&rsquo;\u00e9nergie d&rsquo;une\u00a0<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 xReLA\" aria-expanded=\"false\">batterie lithium-ion<\/span><\/span>\u00a0dans le m\u00eame espace. Elle est aussi plus l\u00e9g\u00e8re gr\u00e2ce \u00e0 une\u00a0<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 xReLA\" aria-expanded=\"false\">anode<\/span><\/span>\u00a0en lithium qui remplace l&rsquo;anode en\u00a0<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 xReLA\" aria-expanded=\"false\">graphite<\/span><\/span>. R\u00e9sultat, une batterie lithium-m\u00e9tal peut contenir au moins un tiers d&rsquo;\u00e9nergie en plus par livre &#8212; par 500\u00a0grammes environ, donc &#8212; qu&rsquo;une batterie lithium-ion.<\/p>\n<p>Pour comprendre comment r\u00e9soudre son probl\u00e8me de d\u00e9gradation rapide \u00e0 la charge\/d\u00e9charge, il faut savoir que lorsqu&rsquo;une batterie lithium-m\u00e9tal se d\u00e9charge, des morceaux de lithium m\u00e9tallique de la taille d&rsquo;un\u00a0<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 xReLA\" aria-expanded=\"false\">micron<\/span><\/span>\u00a0se retrouvent pi\u00e9g\u00e9s dans l&rsquo;interphase d&rsquo;\u00e9lectrolyte\u00a0<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 xReLA\" aria-expanded=\"false\">solide<\/span><\/span>\u00a0(SEI), une matrice spongieuse qui se forme \u00e0 l&rsquo;endroit o\u00f9 l&rsquo;anode et l&rsquo;\u00e9lectrolyte se rencontrent. Du lithium isol\u00e9 que les ing\u00e9nieurs consid\u00e8rent comme mort. Et les charges et d\u00e9charges r\u00e9p\u00e9t\u00e9es entra\u00eenent une accumulation de ce lithium mort, entra\u00eenant une perte rapide de capacit\u00e9 de la batterie.<\/p>\n<p>&nbsp;<\/p>\n<div style=\"width: 542px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.futura-sciences.com\/cdn-cgi\/image\/width=1024,quality=60,format=auto\/sources\/images\/actu\/principe-batterie-lithium-metal.jpeg\" alt=\"Les batteries lithium-m\u00e9tal int\u00e8grent une anode en lithium m\u00e9tallique qui leur procure une densit\u00e9 d\u2019\u00e9nergie plus \u00e9lev\u00e9e que les batteries lithium-ion. Leur \u00e9lectrolyte souvent solide leur permet de s\u2019affranchir du probl\u00e8me de la formation de dendrites. \u00a9 Margaud Lecuyer, Institut des mat\u00e9riaux de Nantes\" width=\"532\" height=\"317\" \/><p class=\"wp-caption-text\">LES BATTERIES LITHIUM-M\u00c9TAL INT\u00c8GRENT UNE ANODE EN LITHIUM M\u00c9TALLIQUE QUI LEUR PROCURE UNE DENSIT\u00c9 D\u2019\u00c9NERGIE PLUS \u00c9LEV\u00c9E QUE LES BATTERIES LITHIUM-ION. LEUR \u00c9LECTROLYTE SOUVENT SOLIDE LEUR PERMET DE S\u2019AFFRANCHIR DU PROBL\u00c8ME DE LA FORMATION DE DENDRITES. \u00a9 MARGAUD LECUYER, INSTITUT DES MAT\u00c9RIAUX DE NANTES<\/p><\/div>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"apres-un-temps-de-repos-les-performances-de-la-bat\">Apr\u00e8s un temps de repos, les performances de la batterie sont meilleures<\/h2>\n<p>Des travaux ant\u00e9rieurs avaient montr\u00e9 que la matrice SEI commence \u00e0 se dissoudre lorsque la batterie est inactive. Pour aller plus loin, les chercheurs ont\u00a0compl\u00e8tement d\u00e9charg\u00e9 une batterie. De quoi supprimer tout le lithium m\u00e9tallique de l&rsquo;anode. Et ne laisser que des morceaux inactifs de lithium isol\u00e9 entour\u00e9s par la matrice SEI. Ils ont observ\u00e9 que si la batterie reste d\u00e9charg\u00e9e, la matrice se dissout. R\u00e9sultat, lorsque la batterie est ensuite recharg\u00e9e, le lithium mort qui n&rsquo;est plus g\u00ean\u00e9 par la\u00a0<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 xReLA\" aria-expanded=\"false\">m<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<p>Comment appliquer cette d\u00e9couverte au monde r\u00e9el\u2009? En demandant au syst\u00e8me de gestion de la batterie de d\u00e9charger compl\u00e8tement les modules individuels les uns apr\u00e8s les autres. Une batterie comporte environ 4\u2009000 de ces modules. Et leur offrir du temps de repos pourra augmenter consid\u00e9rablement la\u00a0<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 xReLA\" aria-expanded=\"false\">dur\u00e9e<\/span><\/span>\u00a0de vie de l&rsquo;ensemble.<\/p>\n<p>avec futura<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Des batteries qui permettraient \u00e0 nos voitures \u00e9lectriques de parcourir plus de 1\u2009000\u00a0kilom\u00e8tres sans avoir \u00e0 \u00eatre recharg\u00e9es. Tout le monde en r\u00eave. Et des chercheurs viennent de d\u00e9couvrir un [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5894,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,14,18],"tags":[],"class_list":["post-5893","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite","category-automobile","category-sciences"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Des scientifiques ont d\u00e9couvert une solution simple pour booster l\u2019autonomie des voitures \u00e9lectriques - Parlons Techs - Store<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/parlonstechs.com\/all\/2024\/02\/13\/des-scientifiques-ont-decouvert-une-solution-simple-pour-booster-lautonomie-des-voitures-electriques\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des scientifiques ont d\u00e9couvert une solution simple pour booster l\u2019autonomie des voitures \u00e9lectriques - ParlonsTechs\" \/>\n<meta property=\"og:description\" content=\"Des batteries qui permettraient \u00e0 nos voitures \u00e9lectriques de parcourir plus de 1\u2009000\u00a0kilom\u00e8tres sans avoir \u00e0 \u00eatre recharg\u00e9es. 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Tout le monde en r\u00eave. 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