Investigadores de la TU Graz han investigado el almacenamiento de energ\u00eda en un supercondensador h\u00edbrido, una combinaci\u00f3n de bater\u00eda y supercondensador que a\u00fana las ventajas de ambas tecnolog\u00edas. Ahora han publicado los detalles en una revista cient\u00edfica.<\/p>\n
Los supercondensadores h\u00edbridos son generalmente una combinaci\u00f3n de bater\u00eda y condensador, es decir, un almacenamiento de energ\u00eda qu\u00edmico y capacitivo. El supercondensador especial que han investigado los investigadores de Austria es una variante \"especialmente sostenible\" compuesta por carbono y electrolito acuoso de yoduro s\u00f3dico que ha sido poco investigada hasta ahora.<\/p>\n
El \u00e1nodo procede de una bater\u00eda y el c\u00e1todo es un electrodo de supercondensador. El supercondensador h\u00edbrido pretende cargarse y descargarse tan r\u00e1pidamente como un condensador y almacenar casi tanta energ\u00eda como las pilas convencionales. Adem\u00e1s, deber\u00eda \"poder cargarse y descargarse mucho m\u00e1s r\u00e1pido y con mucha m\u00e1s frecuencia\". En lugar de los pocos miles de ciclos de una bater\u00eda de iones de litio, los investigadores hablan de alrededor de un mill\u00f3n de ciclos.<\/p>\n
\"El sistema que estudiamos en detalle consiste en electrodos de carbono nanoporoso y un electrolito acuoso de yoduro de sodio, es decir, agua salada\", explica el primer autor del estudio, Christian Prehal. \"Esto hace que este sistema sea especialmente respetuoso con el medio ambiente, rentable, incombustible y f\u00e1cil de reciclar\". Prehal trabaj\u00f3 anteriormente en este tema en el Instituto de Tecnolog\u00eda Qu\u00edmica de Materiales de la Universidad T\u00e9cnica de Graz y recientemente se ha trasladado a la ETH de Z\u00farich.<\/p>","protected":false},"excerpt":{"rendered":"
Investigadores de la TU Graz han investigado el almacenamiento de energ\u00eda en un supercondensador h\u00edbrido, una combinaci\u00f3n de bater\u00eda y supercondensador que a\u00fana las ventajas de ambas tecnolog\u00edas. Ellos<\/p>","protected":false},"author":22,"featured_media":141573,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[9927],"tags":[10230,10217,10548,818],"class_list":["post-141563","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-battery-fuel-cell","tag-batteries","tag-battery-research","tag-supercapacitors","tag-tu-graz"],"acf":{"inhalt_teil2":"
According to the researchers, they were able to show for the first time that solid iodine nanoparticles are formed in the carbon nanopores of the battery electrode during charging, which dissolve again during discharge. According to Prehal, this contradicts the previously suspected reaction mechanism – with far-reaching consequences. The solid iodine remains stable due to the small size of the nanopores – less than 1 nanometer (1 millionth of a millimetre). “The degree of filling of the nanopores with solid iodine determines how much energy can be stored in the electrode. This enables the energy storage capacity of the iodine carbon electrodes to reach unexpectedly high values by storing all chemical energy in the solid iodine particles,” says the scientist.<\/p>\n
The report asserts that this “new fundamental knowledge opens the way to hybrid supercapacitors or battery electrodes with incomparably higher energy density and extremely fast charging and discharging processes”. As an application example, it mentions energy from photovoltaics in private households.<\/p>\n
Also, the researchers claim to have achieved another breakthrough in terms of the research methods used in Raman spectroscopy, the interaction of light with matter is used to gain insight into the structure or properties of a material. Small-angle X-ray scattering (SAXS) makes structural changes during electrochemical reactions visible. Both methods were performed operando, i.e. live during charging and discharging of a specially developed electrochemical cell. The results of the work had shown that the method was “ideally suited” to follow structural changes in a supercapacitor or battery live on the nanometer scale and directly during charging and discharging. According to the Graz University of Technology, this new investigation method could therefore be widely used in the future in the field of electrochemical energy storage.<\/p>\n
tugraz.at<\/a>,\u00a0nature.com<\/a><\/p>\n"},"_links":{"self":[{"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/posts\/141563","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=141563"}],"version-history":[{"count":0,"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/posts\/141563\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/media\/141573"}],"wp:attachment":[{"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/media?parent=141563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/categories?post=141563"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.electrive.com\/es\/wp-json\/wp\/v2\/tags?post=141563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}