{"id":80529,"date":"2024-01-14T13:08:30","date_gmt":"2024-01-14T13:08:30","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/celula-de-dissulfeto-de-ferro-e-litio-composicao-e-caracteristicas\/"},"modified":"2024-01-20T09:51:37","modified_gmt":"2024-01-20T09:51:37","slug":"celula-de-dissulfeto-de-ferro-e-litio-composicao-e-caracteristicas","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/pt-br\/celula-de-dissulfeto-de-ferro-e-litio-composicao-e-caracteristicas\/","title":{"rendered":"C\u00e9lula de dissulfeto de ferro e l\u00edtio | Composi\u00e7\u00e3o e Caracter\u00edsticas |"},"content":{"rendered":"<h2>C\u00e9lulas de L\u00edtio Ferro Dissulfeto<\/h2>\n<p>As c\u00e9lulas de l\u00edtio ferro dissulfeto (LiFeS<sub>2<\/sub>) s\u00e3o uma inova\u00e7\u00e3o significativa no campo das baterias prim\u00e1rias de l\u00edtio, conhecidas tamb\u00e9m como baterias de l\u00edtio-metal. Essas baterias se distinguem dos modelos recarreg\u00e1veis de l\u00edtio-\u00edon ou l\u00edtio-pol\u00edmero, pois n\u00e3o cont\u00eam l\u00edtio met\u00e1lico em sua composi\u00e7\u00e3o. Projetadas como substitutas diretas para as baterias de Zinco-carbono ou alcalinas, as c\u00e9lulas LiFeS<sub>2<\/sub> s\u00e3o frequentemente referidas como &#8220;c\u00e9lulas de l\u00edtio compat\u00edveis com a voltagem&#8221;, operando com uma tens\u00e3o nominal de 1,5 volts.<\/p>\n<h2>Composi\u00e7\u00e3o e Funcionamento<\/h2>\n<p>As baterias LiFeS<sub>2<\/sub> utilizam l\u00edtio como \u00e2nodo, dissulfeto de ferro como c\u00e1todo e um sal de l\u00edtio em uma mistura de solventes org\u00e2nicos como eletr\u00f3lito. Esta composi\u00e7\u00e3o oferece uma densidade de energia superior em compara\u00e7\u00e3o com as c\u00e9lulas que substitui, al\u00e9m de ser adequada para aplica\u00e7\u00f5es de alta corrente. Um aspecto relevante \u00e9 que essas c\u00e9lulas s\u00e3o produzidas no formato padr\u00e3o AA, facilitando sua ado\u00e7\u00e3o em uma ampla gama de dispositivos.<\/p>\n<h2>Tipos de Baterias de L\u00edtio-Metal<\/h2>\n<p>Existem v\u00e1rios tipos de c\u00e9lulas de l\u00edtio-metal, cada uma com caracter\u00edsticas distintas:<\/p>\n<ul>\n<li><strong>C\u00e9lula de L\u00edtio-Mangan\u00eas Di\u00f3xido:<\/strong> Utiliza folha de l\u00edtio como \u00e2nodo e di\u00f3xido de mangan\u00eas como c\u00e1todo, com uma tens\u00e3o total de 3 volts. \u00c9 comum em c\u00e9lulas de bot\u00e3o, como a CR2032.<\/li>\n<li><strong>C\u00e9lula de L\u00edtio Ferro Dissulfeto (LiFeS<sub>2<\/sub>):<\/strong> J\u00e1 descrita anteriormente, destaca-se por sua tens\u00e3o compat\u00edvel de 1,5 volts e \u00e9 adequada para substitui\u00e7\u00e3o direta de baterias alcalinas ou de Zinco-carbono.<\/li>\n<li><strong>C\u00e9lula de L\u00edtio Tionil Clor\u00eddrica:<\/strong> Not\u00e1vel pela sua alta densidade de energia, possui uma vida \u00fatil de 15 a 20 anos.<\/li>\n<li><strong>C\u00e9lula de L\u00edtio Ar:<\/strong> Semelhante \u00e0s c\u00e9lulas de zinco-ar, apresenta uma densidade de energia teoricamente muito alta. O \u00e2nodo \u00e9 composto por uma folha de l\u00edtio met\u00e1lico acoplada eletroquimicamente a uma fonte ilimitada de oxig\u00eanio atmosf\u00e9rico atrav\u00e9s de um c\u00e1todo de ar.<\/li>\n<\/ul>\n<h2>Distin\u00e7\u00e3o entre Baterias Prim\u00e1rias e Secund\u00e1rias<\/h2>\n<p>\u00c9 importante diferenciar as baterias prim\u00e1rias de l\u00edtio, como as c\u00e9lulas LiFeS<sub>2<\/sub>, das baterias secund\u00e1rias de l\u00edtio-\u00edon ou l\u00edtio-pol\u00edmero. As baterias prim\u00e1rias s\u00e3o descart\u00e1veis e n\u00e3o podem ser recarregadas, enquanto as baterias secund\u00e1rias s\u00e3o projetadas para serem recarregadas e reutilizadas v\u00e1rias vezes.<\/p>\n<h2>Aplica\u00e7\u00f5es e Vantagens<\/h2>\n<p>As baterias LiFeS<sub>2<\/sub> s\u00e3o ideais para dispositivos que exigem alta corrente, como brinquedos, c\u00e2meras e lanternas. Sua maior densidade de energia e compatibilidade de voltagem as tornam substitutas eficientes para as baterias tradicionais, oferecendo maior durabilidade e desempenho aprimorado em compara\u00e7\u00e3o com as alternativas existentes no mercado.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2022\/09\/Lithium-Iron-Disulphide-Cell-composition.png\" alt=\"\" \/><\/p>\n<div style=\"text-align: center; font-size: 20px;\">\n    <a href=\"https:\/\/www.electricity-magnetism.org\/electric-battery\/lithium-iron-disulphide-cell\/\">Original Article<\/a>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>As baterias de dissulfeto de ferro-l\u00edtio s\u00e3o baterias prim\u00e1rias de metal de l\u00edtio, que podem substituir as baterias AA de 1,5 V. C\u00e9lula de dissulfeto de ferro e l\u00edtio<\/p>\n","protected":false},"author":1,"featured_media":4165,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-80529","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nao-categorizado","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C\u00e9lula de dissulfeto de ferro e l\u00edtio | Composi\u00e7\u00e3o e Caracter\u00edsticas |<\/title>\n<meta name=\"description\" content=\"As baterias de dissulfeto de ferro-l\u00edtio s\u00e3o baterias prim\u00e1rias de metal de l\u00edtio, que podem substituir as baterias AA de 1,5 V. 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