{"id":80532,"date":"2024-01-14T13:08:42","date_gmt":"2024-01-14T13:08:42","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/composicao-da-bateria-de-metal-de-litio-anodo-catodo-e-eletrolito\/"},"modified":"2024-01-20T09:51:52","modified_gmt":"2024-01-20T09:51:52","slug":"composicao-da-bateria-de-metal-de-litio-anodo-catodo-e-eletrolito","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/pt-br\/composicao-da-bateria-de-metal-de-litio-anodo-catodo-e-eletrolito\/","title":{"rendered":"Composi\u00e7\u00e3o da bateria de metal de l\u00edtio | \u00c2nodo, C\u00e1todo e Eletr\u00f3lito"},"content":{"rendered":"<h2>Composi\u00e7\u00e3o da Bateria de L\u00edtio Met\u00e1lico<\/h2>\n<p>As c\u00e9lulas prim\u00e1rias \u00e0 base de l\u00edtio, conhecidas como baterias de l\u00edtio-metal, s\u00e3o baterias n\u00e3o recarreg\u00e1veis que possuem l\u00edtio met\u00e1lico como \u00e2nodo. Estas baterias se destacam pela menor taxa de auto-descarga, oferecendo o maior tempo de prateleira dispon\u00edvel, chegando a at\u00e9 10 anos, e suportando temperaturas de at\u00e9 70\u00b0C.<\/p>\n<p>\u00c9 importante diferenciar as baterias prim\u00e1rias de l\u00edtio das baterias secund\u00e1rias de \u00edons de l\u00edtio ou pol\u00edmero de l\u00edtio, que s\u00e3o recarreg\u00e1veis. As baterias de \u00edon de l\u00edtio n\u00e3o cont\u00eam l\u00edtio met\u00e1lico.<\/p>\n<h2>Tipos Comuns de C\u00e9lulas de L\u00edtio Met\u00e1lico<\/h2>\n<ul>\n<li><strong>C\u00e9lula de Di\u00f3xido de Mangan\u00eas-L\u00edtio<\/strong>: Utiliza folha de l\u00edtio como \u00e2nodo e di\u00f3xido de mangan\u00eas como c\u00e1todo.<\/li>\n<li><strong>C\u00e9lula de Dissulfeto de Ferro-L\u00edtio<\/strong>: Composta por l\u00edtio no \u00e2nodo e dissulfeto de ferro no c\u00e1todo, estas c\u00e9lulas s\u00e3o frequentemente utilizadas em baterias AA de alto desempenho.<\/li>\n<li><strong>C\u00e9lula de Cloreto de Tionila-L\u00edtio<\/strong>: Not\u00e1vel pela alta densidade de energia e longa vida \u00fatil, de 15 a 20 anos.<\/li>\n<li><strong>C\u00e9lula de Ar-L\u00edtio<\/strong>: Similar \u00e0s c\u00e9lulas de ar-zinco, possui uma densidade de energia te\u00f3rica muito alta.<\/li>\n<\/ul>\n<h2>Rea\u00e7\u00e3o Geral nas C\u00e9lulas de Li\/MnO<sub>2<\/sub><\/h2>\n<p>A rea\u00e7\u00e3o global em c\u00e9lulas de Li\/MnO<sub>2<\/sub> \u00e9 expressa por:<\/p>\n<p>Li(s) + MnIV O<sub>2<\/sub>(s) \u21cc MnIII O<sub>2<\/sub>(Li<sup>+<\/sup>) [E\u00b0 = +3.19 V]<\/p>\n<h2>Caracter\u00edsticas e Classifica\u00e7\u00e3o<\/h2>\n<p>O l\u00edtio se destaca como material de eletrodo devido ao seu baixo potencial de eletrodo e alta condutividade. \u00c9 male\u00e1vel e pode ser extrudado em folhas finas. As baterias de l\u00edtio podem ser classificadas de v\u00e1rias maneiras, mas um m\u00e9todo conveniente \u00e9 pelo material do c\u00e1todo e pela voltagem. Por exemplo, o uso de um c\u00e1todo de dissulfeto de ferro resulta em uma bateria com tens\u00e3o nominal de 1,5 volts.<\/p>\n<h2>Composi\u00e7\u00e3o da Bateria de L\u00edtio Met\u00e1lico (C\u00e9lula Li\/MnO<sub>2<\/sub>)<\/h2>\n<p>A bateria de l\u00edtio met\u00e1lico (c\u00e9lula Li\/MnO<sub>2<\/sub>) \u00e9 composta por cinco partes principais:<\/p>\n<ul>\n<li><strong>Tampa<\/strong> (terminal negativo).<\/li>\n<li><strong>\u00c2nodo<\/strong>: O material ativo no \u00e2nodo \u00e9 o l\u00edtio met\u00e1lico.<\/li>\n<li><strong>Separador<\/strong>: Uma membrana perme\u00e1vel colocada entre o \u00e2nodo e o c\u00e1todo da bateria.<\/li>\n<li><strong>C\u00e1todo<\/strong>: O material ativo do c\u00e1todo \u00e9 di\u00f3xido de mangan\u00eas de alta densidade (MnO<sub>2<\/sub>).<\/li>\n<li><strong>Eletr\u00f3lito<\/strong>: Uma mistura de solvente org\u00e2nico com um sal de metal alcalino dissolvido.<\/li>\n<li><strong>Lata<\/strong> (terminal positivo).<\/li>\n<\/ul>\n<p>Figura: Constru\u00e7\u00e3o esquem\u00e1tica de uma c\u00e9lula de bot\u00e3o Li\/MnO<sub>2<\/sub>. Fonte: varta-ag.com<\/p>\n<h2>Pr\u00f3ximo Artigo<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2022\/01\/logo.png\" alt=\"\" \/><\/p>\n<div style=\"text-align: center; font-size: 20px;\">\n    <a href=\"https:\/\/www.electricity-magnetism.org\/electric-battery\/composition-of-lithium-metal-battery\/\">Original Article<\/a>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A bateria de metal de l\u00edtio usa folha de l\u00edtio como \u00e2nodo e di\u00f3xido de mangan\u00eas como c\u00e1todo. O eletr\u00f3lito \u00e9 uma folha separadora impregnada com sais eletrol\u00edticos.<\/p>\n","protected":false},"author":1,"featured_media":1581,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-80532","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>Composi\u00e7\u00e3o da bateria de metal de l\u00edtio | \u00c2nodo, C\u00e1todo e Eletr\u00f3lito<\/title>\n<meta name=\"description\" content=\"A bateria de metal de l\u00edtio usa folha de l\u00edtio como \u00e2nodo e di\u00f3xido de mangan\u00eas como c\u00e1todo. 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