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{"id":425,"date":"2009-08-05T12:19:20","date_gmt":"2009-08-05T10:19:20","guid":{"rendered":"https:\/\/energethique.be\/?p=425"},"modified":"2009-08-05T12:19:20","modified_gmt":"2009-08-05T10:19:20","slug":"des-batteries-avec-3-fois-plus-de-capacite-dans-un-meme-volume","status":"publish","type":"post","link":"https:\/\/energethique.be\/2009\/des-batteries-avec-3-fois-plus-de-capacite-dans-un-meme-volume\/","title":{"rendered":"Des batteries avec 3 fois plus de capacit\u00e9 dans un m\u00eame volume"},"content":{"rendered":"

Tout le monde conna\u00eet aujourd’hui la batterie Lithium-ion, utilis\u00e9e dans un grand nombre d’appareils que nous utilisons tous les jours (GSM, ordinateurs portables,…). Et bien des scientifiques de l’universit\u00e9 de Waterloo (non, pas Waterloo en Belgique, au Canada, dans l’Ontario, class\u00e9e -par le Times- 129\u00e8me universit\u00e9 au classement g\u00e9n\u00e9ral et 30\u00e8me pour la branche technologie) viennent de mettre au point une nouvelle g\u00e9n\u00e9ration de batteries, les batteries Lithium-Soufre. <\/p>\n

Les batteries Lithium-Soufre sont tr\u00e8s prometteuses car elles permettent de stocker 3 fois plus d’\u00e9lectricit\u00e9 dans le m\u00eame volume que leurs cousines. Ce qui permettrait de diminuer le poids embarqu\u00e9 par rapport aux batteries actuelles (sauf si on d\u00e9cide d’augmenter l’autonomie). De plus, elles seraient, selon eux, \u00e9galement potentiellement moins ch\u00e8res \u00e0 produire pour une m\u00eame capacit\u00e9 de stockage. En gros, rien n’est moins s\u00fbr vu la pr\u00e9sence du mot potentiellement, n\u00e9anmoins, restons optimistes. Enfin, les batteries devraient avoir une dur\u00e9e de vie \u00e9lev\u00e9e, ce qui l\u00e0 encore est un grand avantage.<\/p>\n

\"Batteries<\/p>\n

La batterie Lithium-Souffre \u00e9tait d\u00e9j\u00e0 connue de tous pour sa haute densit\u00e9 \u00e9nerg\u00e9tique mais pour un bon fonctionnement, le soufre \u00e9lectroniquement actif doit \u00eatre en contact permanent avec un bon conducteur comme le carbone. Ils ont alors d\u00e9cid\u00e9 d’employ\u00e9 un carbone poreux dont les vides sont remplis de souffre comme sur la repr\u00e9sentation \u00e0 l’\u00e9chelle du nanom\u00e8tre. Pour plus de d\u00e9tails techniques, vous pouvez lire cet article qui est ma foi fort int\u00e9ressant<\/a>.<\/p>\n

<\/p>\n

Cette technique permet de tirer environ 80% du potentiel th\u00e9orique du couple Lithium-Soufre, ce qui repr\u00e9sente d\u00e9j\u00e0 un gain en capacit\u00e9 de 3 par rapport au Lithium-ion. Notez qu’il y a donc encore une petite marge d’am\u00e9lioration !<\/p>\n

Que des avantages donc ? Non, pour le moment, la batterie Lithium-Soufre p\u00e8che par une s\u00e9curit\u00e9 moins grande que la batterie Lithium-ion. Ils se penchent actuellement sur une solution de protection des \u00e9l\u00e9ments potentiellement dangereux qui semble fonctionner mais dont ils ne connaissent pas le fonctionnement sur le long terme.<\/p>\n

S’il s’agit de batterie pour \u00e9quiper une voiture, il vaut mieux \u00e9viter d’embarquer un syst\u00e8me mal s\u00e9curis\u00e9 m\u00eame si plus performant, vous ne pensez pas ?<\/p>\n

Pour ma part, j’imagine d\u00e9j\u00e0 mon portable et mon t\u00e9l\u00e9phone \u00e9quip\u00e9s d’une batterie 3 fois plus l\u00e9g\u00e8re.<\/p>\n

Lu sur Gizmag<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Tout le monde conna\u00eet aujourd’hui la batterie Lithium-ion, utilis\u00e9e dans un grand nombre d’appareils que nous utilisons tous les jours (GSM, ordinateurs portables,…). Et bien des scientifiques de l’universit\u00e9 de Waterloo (non, pas Waterloo en Belgique, au Canada, dans l’Ontario, class\u00e9e -par le Times- 129\u00e8me universit\u00e9 au classement g\u00e9n\u00e9ral et 30\u00e8me pour la branche technologie) viennent de mettre au point une nouvelle g\u00e9n\u00e9ration de batteries, les batteries Lithium-Soufre. <\/p>\n

Les batteries Lithium-Soufre sont tr\u00e8s prometteuses car elles permettent de stocker 3 […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[1],"tags":[],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/pBGwz-6R","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/posts\/425"}],"collection":[{"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/comments?post=425"}],"version-history":[{"count":0,"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/posts\/425\/revisions"}],"wp:attachment":[{"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/media?parent=425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/categories?post=425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/tags?post=425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}