{"id":22480,"date":"2022-07-25T21:52:44","date_gmt":"2022-07-25T21:52:44","guid":{"rendered":"https:\/\/www.africa-press.net\/mali\/politique\/bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2"},"modified":"2022-07-25T21:57:09","modified_gmt":"2022-07-25T21:57:09","slug":"bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/mali\/homepage-french\/bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2","title":{"rendered":"Bient\u00f4t des batteries au sel dans les v\u00e9hicules \u00e9lectriques"},"content":{"rendered":"

Africa-Press – Mali. <\/strong><\/span>Des chercheurs du D\u00e9partement de l\u2019\u00c9nergie des \u00c9tats-Unis ont modifi\u00e9 la recette de l\u2019\u00e9lectrolyte des batteries sodium-ion pour prolonger leur dur\u00e9e de vie. Prometteuse, cette technologie peu on\u00e9reuse et dot\u00e9e de nombreux atouts pourrait s\u2019embarquer dans les petits v\u00e9hicules \u00e9lectriques.<\/p>\n

Ininflammables, peu on\u00e9reuses et dot\u00e9es de mat\u00e9riaux disponibles en abondance, les batteries au sodium-ion disposeraient du profil parfait pour alimenter en \u00e9nergie les v\u00e9hicules \u00e9lectriques, si elles ne souffraient pas d\u2019un gros d\u00e9faut : une long\u00e9vit\u00e9 limit\u00e9e. Cela pourrait bien changer, car une \u00e9quipe de recherche du Pacific Northwest National Laboratory (PNNL) du D\u00e9partement de l\u2019\u00c9nergie des \u00c9tats-Unis a mis au point une batterie sodium-ion dont la long\u00e9vit\u00e9 a \u00e9t\u00e9 \u00e9tendue.<\/p>\n

Pour y parvenir, les chercheurs ont planch\u00e9 sur l\u2019\u00e9lectrolyte de ces batteries. C\u2019est ce composant qui fait p\u00e9ricliter rapidement les batteries sodium-ion. Concr\u00e8tement, l\u2019\u00e9lectrolyte actuelle engendre la dissolution du film protecteur de l\u2019anode au fil des recharges. C\u2019est ce qui entraine la perte de capacit\u00e9.<\/p>\n

Au fur et \u00e0 mesure qu\u2019une batterie passe par des cycles r\u00e9p\u00e9t\u00e9s de charge et de d\u00e9charge, elle perd sa capacit\u00e9 \u00e0 maintenir une charge. Une nouvelle technologie de batterie sodium-ion d\u00e9velopp\u00e9e au Pacific Northwest National Laboratory pourrait changer la donne. \u00a9 Animation par Sara Levine, Laboratoire national du nord-ouest du Pacifique<\/p>\n

Prot\u00e9ger l\u2019anode pour augmenter la dur\u00e9e de vie<\/b><\/p>\n

L\u2019\u00e9quipe de recherche a mis au point un nouvel \u00e9lectrolyte capable de g\u00e9n\u00e9rer une couche protectrice sur la cathode et sur l\u2019anode. La pr\u00e9sence de cette couche ultra-fine a permis d\u2019augmenter le nombre de cycles de charge au-del\u00e0 de 300. La perte de capacit\u00e9 est rest\u00e9e en dessous de 10 % sur le mod\u00e8le de laboratoire de la taille d\u2019une pi\u00e8ce de monnaie. Avec cette facult\u00e9, cette technologie pourrait \u00e0 l\u2019avenir venir se frotter aux batteries lithium-ion pour \u00e9quiper les v\u00e9hicules \u00e9lectriques ou bien stocker de l\u2019\u00e9nergie.<\/p>\n

Entre autres avantages, en plus d\u2019\u00eatre ininflammables, les batteries sodium-ion sont capables affronter des temp\u00e9ratures extr\u00eames. Leur densit\u00e9 reste inf\u00e9rieure \u00e0 celle des batteries Lithium-ion et c\u2019est pour cette raison que cette technologie devrait \u00eatre r\u00e9serv\u00e9e aux v\u00e9hicules \u00e9lectriques peu \u00e9nergivores.<\/p>\n

Pour plus d’informations et d’analyses sur la Mali<\/a>, suivez Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Mali. Des chercheurs du D\u00e9partement de l\u2019\u00c9nergie des \u00c9tats-Unis ont modifi\u00e9 la recette de l\u2019\u00e9lectrolyte des batteries sodium-ion pour prolonger leur dur\u00e9e de vie. Prometteuse, cette technologie peu on\u00e9reuse et dot\u00e9e de nombreux atouts pourrait s\u2019embarquer dans les petits v\u00e9hicules \u00e9lectriques. Ininflammables, peu on\u00e9reuses et dot\u00e9es de mat\u00e9riaux disponibles en abondance, les batteries […]<\/p>\n","protected":false},"author":82,"featured_media":22479,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,11,17],"tags":[76,86,19],"class_list":["post-22480","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-homepage-french","category-toutes-les-actualites","tag-africa-press","tag-africa-press-mali","tag-mali"],"yoast_head":"\nBient\u00f4t des batteries au sel dans les v\u00e9hicules \u00e9lectriques - Mali<\/title>\n<meta name=\"description\" content=\"Des chercheurs du D\u00e9partement de l\u2019\u00c9nergie des \u00c9tats-Unis ont modifi\u00e9 la recette de l\u2019\u00e9lectrolyte des batteries sodium-i ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/mali\/homepage-french\/bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bient\u00f4t des batteries au sel dans les v\u00e9hicules \u00e9lectriques\" \/>\n<meta property=\"og:description\" content=\"Des chercheurs du D\u00e9partement de l\u2019\u00c9nergie des \u00c9tats-Unis ont modifi\u00e9 la recette de l\u2019\u00e9lectrolyte des batteries sodium-i ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/mali\/homepage-french\/bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2\" \/>\n<meta property=\"og:site_name\" content=\"Mali\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/AfricaPressTunisiaa\" \/>\n<meta property=\"article:published_time\" content=\"2022-07-25T21:52:44+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-07-25T21:57:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/mali\/sites\/21\/2022\/07\/postQueueImg_1-62df119ac7ca6.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1820\" \/>\n\t<meta property=\"og:image:height\" content=\"1137\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/mali\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Bient\u00f4t des batteries au sel dans les v\u00e9hicules \u00e9lectriques\",\"datePublished\":\"2022-07-25T21:52:44+00:00\",\"dateModified\":\"2022-07-25T21:57:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2\"},\"wordCount\":418,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/mali\/sites\/21\/2022\/07\/postQueueImg_1-62df119ac7ca6.jpg\",\"keywords\":[\"Africa Press\",\"Africa Press-Mali\",\"mali\"],\"articleSection\":[\"Divers\",\"homepage-french\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/mali\/homepage-french\/bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2\",\"url\":\"https:\/\/www.africa-press.net\/mali\/homepage-french\/bientot-des-batteries-au-sel-dans-les-vehicules-electriques-2\",\"name\":\"Bient\u00f4t des batteries au sel dans les v\u00e9hicules \u00e9lectriques - 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