{"id":398222,"date":"2022-10-11T18:12:19","date_gmt":"2022-10-11T16:12:19","guid":{"rendered":"https:\/\/www.eenewseurope.com\/?p=398222"},"modified":"2022-10-12T07:59:35","modified_gmt":"2022-10-12T05:59:35","slug":"batterie-au-sodium-fonctionnelle-grace-a-un-separateur-a-base-dalgues","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/batterie-au-sodium-fonctionnelle-grace-a-un-separateur-a-base-dalgues\/","title":{"rendered":"Batterie au sodium fonctionnelle gr\u00e2ce \u00e0 un s\u00e9parateur \u00e0 base d&rsquo;algues"},"content":{"rendered":"<h2><span class=\"VIiyi\" lang=\"fr\"><span class=\"JLqJ4b\"><span class=\"Q4iAWc\">Des chercheurs de l&rsquo;Universit\u00e9 de Bristol ont utilis\u00e9 des nanomat\u00e9riaux fabriqu\u00e9s \u00e0 partir d&rsquo;algues pour cr\u00e9er un s\u00e9parateur solide pour une batterie sodium-ions. <\/span><\/span><\/span><\/h2>\n<p><span class=\"VIiyi\" lang=\"fr\"><span class=\"JLqJ4b\"><span class=\"Q4iAWc\">Les batteries sodium-m\u00e9tal (SMB) sont des syst\u00e8mes de stockage d&rsquo;\u00e9nergie \u00e0 haute \u00e9nergie et \u00e0 faible co\u00fbt prometteurs pour la prochaine g\u00e9n\u00e9ration d&rsquo;applications \u00e0 grande \u00e9chelle, mais souffrent du probl\u00e8me d&rsquo;une croissance incontr\u00f4l\u00e9e des dendrites, qui p\u00e9n\u00e8trent dans le s\u00e9parateur de la batterie et entra\u00eenent un court-circuit. <\/span><\/span><\/span><\/p>\n<p><span class=\"VIiyi\" lang=\"fr\"><span class=\"JLqJ4b\"><span class=\"Q4iAWc\">Le s\u00e9parateur nanofibreux \u00e9lectrofil\u00e9 bifonctionnel est construit \u00e0 partir de mat\u00e9riaux d\u00e9riv\u00e9s d&rsquo;algues qui s&rsquo;alignent automatiquement pour emp\u00eacher la croissance des dendrites. Cela a augment\u00e9 le temps de cycle \u00e0 des densit\u00e9s de courant \u00e9lev\u00e9es \u00e0 plus de 1 000 heures \u00e0 1 et 3 mA cm-2, et \u00e0 plus de 700 heures \u00e0 5 mA cm-2 en utilisant des \u00e9lectrolytes carbonat\u00e9s sans additif.<\/span><\/span><\/span><\/p>\n<p class=\"title\"><a title=\"La batterie Na-Ion pr\u00eate \u00e0 remplacer la Li-ion?\" href=\"https:\/\/www.ecinews.fr\/fr\/la-batterie-na-ion-prete-a-remplacer-la-li-ion\/\" target=\"_blank\" rel=\"noopener\">La batterie Na-Ion pr\u00eate \u00e0 remplacer la Li-ion?<\/a><\/p>\n<p><a href=\"https:\/\/www.electronique-eci.com\/news\/eau-sel-batterie-low-cost\" target=\"www.electronique-eci.com\" rel=\"noopener\">Eau + Sel = Batterie low cost ?<\/a><\/p>\n<p><a href=\"https:\/\/www.eenewspower.com\/en\/seaweed-extract-boosts-battery-performance\/\">Seaweed extract boosts battery performance\u00a0<\/a><\/p>\n<p><a href=\"https:\/\/www.eenewspower.com\/en\/reactive-seaweed-derivative-boosts-lithium-sulfur-batteries\/\">Reactive seaweed derivative boosts lithium-sulfur battery\u00a0<\/a><\/p>\n<p><span class=\"VIiyi\" lang=\"fr\"><span class=\"JLqJ4b\"><span class=\"Q4iAWc\">\u00ab Le but d&rsquo;un s\u00e9parateur est de s\u00e9parer les parties fonctionnelles d&rsquo;une batterie (le plus et le moins) et de permettre le libre transport de la charge. Nous avons montr\u00e9 que des mat\u00e9riaux \u00e0 base d&rsquo;algues peuvent rendre le s\u00e9parateur tr\u00e8s r\u00e9sistant et \u00e9viter qu&rsquo;il ne soit perc\u00e9 par des structures m\u00e9talliques en sodium. Cela permet \u00e9galement une plus grande capacit\u00e9 de stockage et une plus grande efficacit\u00e9, augmentant la dur\u00e9e de vie des batteries &#8211; ce qui est essentiel pour alimenter des appareils tels que les t\u00e9l\u00e9phones portables beaucoup plus longtemps \u00bb, a d\u00e9clar\u00e9 Jing Wang, premier auteur et doctorant au Bristol Composites Institute (BCI). . <\/span><\/span><\/span><\/p>\n<p><span class=\"VIiyi\" lang=\"fr\"><span class=\"JLqJ4b\"><span class=\"Q4iAWc\">Cela s&rsquo;appuie sur des travaux ant\u00e9rieurs effectu\u00e9s \u00e0 l&rsquo;Universit\u00e9 de Bristol et en collaboration avec l&rsquo;Imperial College et l&rsquo;University College London. <\/span><\/span><\/span><\/p>\n<p><span class=\"VIiyi\" lang=\"fr\"><span class=\"JLqJ4b\"><span class=\"Q4iAWc\">Le Dr Amaka Onyianta, \u00e9galement du BCI, qui a cr\u00e9\u00e9 des nanomat\u00e9riaux de cellulose et co-auteur de la recherche, a d\u00e9clar\u00e9 : \u00ab J&rsquo;ai \u00e9t\u00e9 ravi de voir que ces nanomat\u00e9riaux sont capables de renforcer les mat\u00e9riaux s\u00e9parateurs et d&rsquo;am\u00e9liorer notre capacit\u00e9 \u00e0 \u00e9voluer vers des batteries \u00e0 base de sodium. Cela signifie que nous n&rsquo;aurions plus \u00e0 compter sur des mat\u00e9riaux rares tels que le lithium, qui est souvent extrait de mani\u00e8re contraire \u00e0 l&rsquo;\u00e9thique et utilise une grande quantit\u00e9 de ressources naturelles, telles que l&rsquo;eau, pour l&rsquo;extraire.<\/span><\/span><\/span><\/p>\n<p><span class=\"VIiyi\" lang=\"fr\"><span class=\"JLqJ4b\"><span class=\"Q4iAWc\">\u00ab\u00a0Ce travail d\u00e9montre vraiment que des formes plus vertes de stockage d&rsquo;\u00e9nergie sont possibles, sans \u00eatre destructrices pour l&rsquo;environnement lors de leur production\u00a0\u00bb, a d\u00e9clar\u00e9 le professeur Steve Eichhorn, qui a dirig\u00e9 la recherche au Bristol Composites Institute. <\/span><\/span><\/span><\/p>\n<p><span class=\"VIiyi\" lang=\"fr\"><span class=\"JLqJ4b\"><span class=\"Q4iAWc\">Le prochain d\u00e9fi est d&rsquo;augmenter la production de ces mat\u00e9riaux et de supplanter la technologie actuelle \u00e0 base de lithium.<\/span><\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<h4>Autres articles sur ECI News<\/h4>\n<p class=\"title\"><a title=\"https:\/\/www.ecinews.fr\/fr\/infineon-inaugure-une-nouvelle-fab-de-semiconducteurs-de-puissance-en-hongrie\/\" href=\"https:\/\/www.ecinews.fr\/fr\/infineon-inaugure-une-nouvelle-fab-de-semiconducteurs-de-puissance-en-hongrie\/\" target=\"_blank\" rel=\"noopener\">Infineon inaugure une nouvelle fab de semiconducteurs de puissance en Hongrie<\/a><\/p>\n<p><a title=\"Les donn\u00e9es des fonderies pointent les faiblesses du march\u00e9 des semiconducteurs\" href=\"https:\/\/www.ecinews.fr\/fr\/les-donnees-des-fonderies-pointent-les-faiblesses-du-marche-des-semiconducteurs\/\" target=\"_blank\" rel=\"noopener\">Les donn\u00e9es des fonderies pointent les faiblesses du march\u00e9 des semiconducteurs<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Batterie au sodium fonctionnelle gr\u00e2ce \u00e0 un s\u00e9parateur \u00e0 base d&rsquo;algues<\/p>\n","protected":false},"author":12,"featured_media":397969,"comment_status":"closed","ping_status":"closed","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[886,26],"tags":[909,913],"domains":[47],"ppma_author":[1144],"class_list":["post-398222","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-fr","category-technology-news","tag-batteries-power-supplies-fr","tag-materials-processes-fr","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Batterie au sodium fonctionnelle gr\u00e2ce \u00e0 un s\u00e9parateur \u00e0 ba...<\/title>\n<meta name=\"description\" content=\"Des chercheurs ont utilis\u00e9 des nanomat\u00e9riaux fabriqu\u00e9s \u00e0 partir d&#039;algues pour cr\u00e9er un s\u00e9parateur solide pour une batterie ions-sodium.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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