Investigadores de la Universidad australiana de Monash afirman estar cerca de comercializar la bater\u00eda de litio-azufre m\u00e1s eficiente del mundo. Podr\u00eda dar a los coches el\u00e9ctricos una autonom\u00eda de m\u00e1s de 1.000 kil\u00f3metros y a los smartphones una autonom\u00eda de cinco d\u00edas.<\/p>\n
Seg\u00fan la universidad, la pila recargable podr\u00eda \"cuadruplicar con creces el rendimiento del actual l\u00edder del mercado\", gracias a un nuevo dise\u00f1o del c\u00e1todo. Los investigadores han solicitado una patente para su proceso de fabricaci\u00f3n.<\/p>\n
Las c\u00e9lulas prototipo fueron fabricadas por el socio alem\u00e1n de investigaci\u00f3n y desarrollo Fraunhofer IWS de Dresde. Los investigadores de Dresde tambi\u00e9n confirman el potencial fundamental de la tecnolog\u00eda de litio-azufre, pero advierten contra las grandes esperanzas depositadas en su pronta comercializaci\u00f3n. Aunque la tecnolog\u00eda es muy prometedora, a\u00fan est\u00e1 en fase de desarrollo. \"Las primeras aplicaciones se ven all\u00ed donde el bajo peso es una preocupaci\u00f3n, por ejemplo en la aviaci\u00f3n\", afirma Holger Althues, jefe del departamento de superficie qu\u00edmica y tecnolog\u00eda de bater\u00edas del IWS, que lleva varios a\u00f1os investigando la tecnolog\u00eda con su equipo. Las pilas de litio-azufre pueden almacenar m\u00e1s energ\u00eda con el mismo peso que las de iones de litio, pero son m\u00e1s grandes.<\/p>\n
La ventaja de las pilas de litio-azufre es que tienen un coste y un peso considerablemente inferiores. En este tipo de pilas, el c\u00e1todo est\u00e1 formado por una mezcla de azufre y carbono y sustituye a los c\u00e1todos anteriormente predominantes hechos de n\u00edquel, manganeso y cobalto. \"Esto abre el potencial para una c\u00e9lula de bajo coste: A diferencia del n\u00edquel y el cobalto, el azufre es un producto de desecho y est\u00e1 disponible en todo el mundo\", afirma Althues.<\/p>","protected":false},"excerpt":{"rendered":"
Investigadores de la Universidad de Monash (Australia) afirman estar cerca de comercializar la bater\u00eda de litio-azufre m\u00e1s eficiente del mundo. Podr\u00eda dar a los coches el\u00e9ctricos una autonom\u00eda de m\u00e1s<\/p>","protected":false},"author":22,"featured_media":125572,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[9927],"tags":[10374,10230,13682,10217,19076,19471],"class_list":["post-125595","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-battery-fuel-cell","tag-australia","tag-batteries","tag-battery-cells","tag-battery-research","tag-fraunhofer-iws","tag-monash-university"],"acf":{"inhalt_teil2":"
But this technology has not yet caught on because of difficulties with the stability of the cathode. During charging and discharging, the cathode expands (or contracts) much more strongly, causing fine cracks in the material and thus increasing wear. The Australian researchers around Mahdokht Shaibani are now developing a particularly robust sulfur cathode.<\/p>\n
This involves embedding the sulfur in a mixture of the binder sodium carboxymethyl celluloses (Na-CMC) and carbon, as the researchers write in the US journal Science Advances<\/em>, among others. This layer is should compensate for the mechanical loads and thus reduce the loss of the cell’s performance and capacity over its service life. Power densities of more than 1,200 mAh\/g are expected to be possible \u2013 at least already in pouch-design cells commonly used in the automotive industry, but still on a laboratory scale.<\/p>\n “This approach not only favours high-performance metrics and long cycle life, but is also simple and extremely low-cost to manufacture, using water-based processes, and can lead to significant reductions in environmentally hazardous waste,” emphasized Monash researcher Matthew Hill. Over 200 charging cycles, the lithium-sulfur cell has hardly lost any power \u2013 with an efficiency of 99 per cent. The first test batteries are to be integrated into cars and solar parks this year.<\/p>\n Despite these breakthroughs, there is still a lot of work ahead for researchers and later also for series developers. For use in electric cars, the charging cycles would have to be increased to several thousand. In a recently filed patent<\/a>, Tesla assumes 4,000 charge cycles for the new cells \u2013 but still based on NMC cathodes.<\/p>\n monash.edu<\/a>, cnn.com<\/a><\/p>\n"},"_links":{"self":[{"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/posts\/125595","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/comments?post=125595"}],"version-history":[{"count":0,"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/posts\/125595\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/media\/125572"}],"wp:attachment":[{"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/media?parent=125595"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/categories?post=125595"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/tags?post=125595"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Charging cycles still need to be increased<\/h2>\n