{"id":80583,"date":"2024-01-14T13:10:57","date_gmt":"2024-01-14T13:10:57","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/bateria-li-pol-vs-bateria-de-ion-litio\/"},"modified":"2024-01-20T09:54:11","modified_gmt":"2024-01-20T09:54:11","slug":"bateria-li-pol-vs-bateria-de-ion-litio","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/pt-br\/bateria-li-pol-vs-bateria-de-ion-litio\/","title":{"rendered":"Bateria Li-pol vs bateria de \u00edon-l\u00edtio"},"content":{"rendered":"<h2>Compara\u00e7\u00e3o entre Baterias de \u00cdon de L\u00edtio e Pol\u00edmero de L\u00edtio<\/h2>\n<p>As baterias de \u00edon de l\u00edtio, conhecidas como baterias Li-ion, s\u00e3o tipos de baterias secund\u00e1rias (recarreg\u00e1veis) compostas por c\u00e9lulas nas quais os \u00edons de l\u00edtio se movem do \u00e2nodo atrav\u00e9s de um eletr\u00f3lito para o c\u00e1todo durante a descarga, retornando quando carregadas. J\u00e1 as baterias de pol\u00edmero de \u00edon de l\u00edtio (LiPo), tamb\u00e9m conhecidas como Li-pol, utilizam um eletr\u00f3lito polim\u00e9rico em vez de um eletr\u00f3lito l\u00edquido, consistindo de um gel polim\u00e9rico de alta condutividade.<\/p>\n<p>As c\u00e9lulas de pol\u00edmero de l\u00edtio evolu\u00edram a partir de baterias de \u00edon de l\u00edtio e metal-l\u00edtio. As Li-ion s\u00e3o amplamente usadas em laptops, ferramentas el\u00e9tricas sem fio, certos carros el\u00e9tricos, patinetes el\u00e9tricos, bicicletas el\u00e9tricas, power banks port\u00e1teis e lanternas LED. A rea\u00e7\u00e3o geral durante a descarga \u00e9 C<sub>6<\/sub>Li + CoO<sub>2<\/sub> \u21c4 C<sub>6<\/sub> + LiCoO<sub>2<\/sub>.<\/p>\n<h2>Diferen\u00e7as Principais<\/h2>\n<p>A principal diferen\u00e7a entre as baterias Li-ion e Li-pol est\u00e1 no eletr\u00f3lito utilizado. Enquanto as Li-ion usam um eletr\u00f3lito l\u00edquido de sal de l\u00edtio (como LiPF<sub>6<\/sub>) em um solvente org\u00e2nico, as Li-pol utilizam um eletr\u00f3lito polim\u00e9rico s\u00f3lido (SPE) como \u00f3xido de polietileno (PEO), poliacrilonitrila (PAN), polimetil metacrilato (PMMA) ou fluoreto de polivinilideno (PVdF). As Li-pol oferecem energias espec\u00edficas mais altas e s\u00e3o frequentemente usadas em sistemas onde o peso \u00e9 um fator importante, como em dispositivos m\u00f3veis, drones e alguns ve\u00edculos el\u00e9tricos.<\/p>\n<p>As baterias Li-ion, em geral, t\u00eam alta densidade de energia, aus\u00eancia de efeito mem\u00f3ria e baixa auto-descarga. Um dos tipos mais comuns \u00e9 a c\u00e9lula 18650, utilizada em muitas aplica\u00e7\u00f5es citadas anteriormente. A tens\u00e3o nominal \u00e9 de 3,7 V. \u00c9 importante distinguir as baterias prim\u00e1rias de l\u00edtio (n\u00e3o recarreg\u00e1veis) das secund\u00e1rias de \u00edon de l\u00edtio ou pol\u00edmero de l\u00edtio (recarreg\u00e1veis).<\/p>\n<h2>Composi\u00e7\u00e3o e Caracter\u00edsticas<\/h2>\n<p>Uma c\u00e9lula t\u00edpica de Li-ion cont\u00e9m:<\/p>\n<ul>\n<li><strong>C\u00e1todo:<\/strong> O c\u00e1todo \u00e9 o eletrodo positivo que adquire el\u00e9trons do circuito externo e \u00e9 reduzido durante a rea\u00e7\u00e3o eletroqu\u00edmica. Materiais comuns incluem LiCoO<sub>2<\/sub> ou LiMn<sub>2<\/sub>O<sub>4<\/sub>.<\/li>\n<li><strong>\u00c2nodo:<\/strong> O \u00e2nodo \u00e9 o eletrodo negativo que libera el\u00e9trons para o circuito externo e oxida durante a rea\u00e7\u00e3o. Grafite litiatada, LixC<sub>6<\/sub>, \u00e9 um material comum.<\/li>\n<li><strong>Separador:<\/strong> Uma membrana perme\u00e1vel entre \u00e2nodo e c\u00e1todo, prevenindo curtos-circuitos e permitindo o transporte de \u00edons de l\u00edtio.<\/li>\n<li><strong>Eletr\u00f3lito:<\/strong> Em c\u00e9lulas Li-ion, s\u00e3o solu\u00e7\u00f5es n\u00e3o aquosas com sal de hexafluorofosfato de l\u00edtio (LiPF<sub>6<\/sub>) dissolvido em carbonatos org\u00e2nicos como carbonato de etileno (EC) e carbonato de dimetil (DMC).<\/li>\n<\/ul>\n<p>As caracter\u00edsticas qu\u00edmicas, de desempenho, custo e seguran\u00e7a variam entre os tipos de baterias de \u00edon de l\u00edtio. A maioria dos eletr\u00f4nicos port\u00e1teis usa baterias de pol\u00edmero de l\u00edtio com um c\u00e1todo de \u00f3xido de cobalto de l\u00edtio (LiCoO<sub>2<\/sub>) e um \u00e2nodo de grafite, oferecendo alta densidade de energia.<\/p>\n<h2>Conclus\u00e3o<\/h2>\n<p>Embora ambas as baterias sejam baseadas em l\u00edtio, as diferen\u00e7as na composi\u00e7\u00e3o do eletr\u00f3lito e na constru\u00e7\u00e3o interna oferecem distintas vantagens e desvantagens. A escolha entre Li-ion e Li-pol depende das necessidades espec\u00edficas de aplica\u00e7\u00e3o, considerando fatores como densidade de energia, peso, seguran\u00e7a e custo.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2022\/10\/lithium-polymer-battery-vs-li-ion-battery.png\" alt=\"\" \/><\/p>\n<div style=\"text-align: center; font-size: 20px;\">\n    <a href=\"https:\/\/www.electricity-magnetism.org\/electric-battery\/li-pol-vs-li-ion-battery\/\">Original Article<\/a>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A principal diferen\u00e7a entre \u00edon-l\u00edtio e Li-pol \u00e9 que, em vez de usar um eletr\u00f3lito l\u00edquido de sal de l\u00edtio (como LiPF6) mantido em um solvente org\u00e2nico, a bateria usa um eletr\u00f3lito de pol\u00edmero s\u00f3lido.<\/p>\n","protected":false},"author":1,"featured_media":4628,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-80583","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 - 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