{"id":80566,"date":"2024-01-14T13:10:18","date_gmt":"2024-01-14T13:10:18","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/bateria-de-polimero-de-litio\/"},"modified":"2024-01-20T09:53:28","modified_gmt":"2024-01-20T09:53:28","slug":"bateria-de-polimero-de-litio","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/pt-br\/bateria-de-polimero-de-litio\/","title":{"rendered":"Bateria de pol\u00edmero de l\u00edtio"},"content":{"rendered":"<h2>Baterias de Pol\u00edmero de L\u00edtio: Uma Vis\u00e3o Geral<\/h2>\n<p>As baterias de pol\u00edmero de l\u00edtio, conhecidas tamb\u00e9m como LiPo (Lithium Polymer), representam um avan\u00e7o significativo na tecnologia de baterias recarreg\u00e1veis. Originadas das baterias de l\u00edtio-\u00edon e l\u00edtio-metal, as baterias LiPo s\u00e3o compostas por c\u00e9lulas nas quais \u00edons de l\u00edtio movem-se do \u00e2nodo para o c\u00e1todo atrav\u00e9s de um eletr\u00f3lito durante a descarga, retornando ao carregar. A diferen\u00e7a fundamental das Li-ion tradicionais est\u00e1 no uso de um eletr\u00f3lito polim\u00e9rico em gel de alta condutividade, em vez de um eletr\u00f3lito l\u00edquido.<\/p>\n<h2>Composi\u00e7\u00e3o e Funcionamento<\/h2>\n<p>O principal componente das baterias LiPo \u00e9 o eletr\u00f3lito s\u00f3lido polim\u00e9rico (SPE), como \u00f3xido de polietileno (PEO), poliacrilonitrila (PAN), polimetilmetacrilato (PMMA) ou fluoreto de polivinilideno (PVdF). Essas baterias oferecem energias espec\u00edficas superiores a outros tipos de baterias de l\u00edtio, sendo frequentemente utilizadas em dispositivos m\u00f3veis, drones e alguns ve\u00edculos el\u00e9tricos. O c\u00e1todo \u00e9 composto por um material comp\u00f3sito (um composto intercalado de l\u00edtio), enquanto o \u00e2nodo geralmente \u00e9 feito de grafite poroso litificado.<\/p>\n<h2>Aplica\u00e7\u00f5es e Caracter\u00edsticas<\/h2>\n<p>As baterias Li-ion s\u00e3o amplamente utilizadas em laptops, ferramentas el\u00e9tricas sem fio, certos carros el\u00e9tricos, patinetes el\u00e9tricos, a maioria das bicicletas el\u00e9tricas, bancos de energia port\u00e1teis e lanternas LED. A rea\u00e7\u00e3o global durante a descarga \u00e9: C<sub>6<\/sub>Li + CoO<sub>2<\/sub> \u21c4 C<sub>6<\/sub> + LiCoO<sub>2<\/sub>. Eletr\u00f4nicos port\u00e1teis geralmente usam 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>Vantagens e Desvantagens<\/h2>\n<p>As baterias de Li-ion oferecem vantagens significativas, incluindo alta densidade de energia, aus\u00eancia de efeito mem\u00f3ria e baixa autodescarga. Por outro lado, elas requerem sistemas de gerenciamento eletr\u00f4nico para prote\u00e7\u00e3o contra sobrecarga e descarga profunda e sistemas de gerenciamento t\u00e9rmico para evitar superaquecimento. Al\u00e9m disso, o custo mais elevado e o envelhecimento s\u00e3o desvantagens not\u00e1veis.<\/p>\n<h2>Compara\u00e7\u00e3o com Outras Baterias<\/h2>\n<p>As baterias de pol\u00edmero de l\u00edtio distinguem-se das baterias prim\u00e1rias de l\u00edtio (como as c\u00e9lulas bot\u00e3o CR2032 3V), que s\u00e3o n\u00e3o recarreg\u00e1veis e cont\u00eam l\u00edtio met\u00e1lico. As baterias Li-ion n\u00e3o cont\u00eam l\u00edtio met\u00e1lico. A voltagem nominal das baterias Li-ion \u00e9 de 3,7 V.<\/p>\n<h2>Tipos de Baterias de \u00cdon de L\u00edtio<\/h2>\n<p>Existem v\u00e1rios tipos de baterias de \u00edon de l\u00edtio, cada uma com diferentes materiais de c\u00e1todo, como \u00f3xido de cobalto de l\u00edtio (LiCoO<sub>2<\/sub>), \u00f3xido de mangan\u00eas de l\u00edtio (LiMn<sub>2<\/sub>O<sub>4<\/sub>), \u00f3xido de n\u00edquel mangan\u00eas cobalto (LiNiMnCoO<sub>2<\/sub> &#8211; NMC) e fosfato de ferro-l\u00edtio (LiFePO<sub>4<\/sub> &#8211; LFP). Cada tipo oferece um equil\u00edbrio \u00fanico entre densidade de energia, custo, desempenho e seguran\u00e7a.<\/p>\n<h2>Conclus\u00e3o<\/h2>\n<p>As baterias de pol\u00edmero de l\u00edtio s\u00e3o uma escolha popular para uma ampla gama de aplica\u00e7\u00f5es, gra\u00e7as \u00e0 sua alta densidade de energia, flexibilidade de design e seguran\u00e7a aprimorada. \u00c0 medida que a tecnologia continua evoluindo, espera-se que as baterias LiPo desempenhem um papel cada vez mais importante no armazenamento de energia e nas aplica\u00e7\u00f5es de dispositivos eletr\u00f4nicos m\u00f3veis.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.electricity-magnetism.org\/wp-content\/uploads\/2022\/10\/lithium-polymer-battery-description.png\" alt=\"\" \/><\/p>\n<div style=\"text-align: center; font-size: 20px;\">\n    <a href=\"https:\/\/www.electricity-magnetism.org\/electric-battery\/lithium-polymer-battery\/\">Original Article<\/a>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uma bateria de pol\u00edmero de \u00edon de l\u00edtio (LiPo) (tamb\u00e9m conhecida como Li-pol, l\u00edtio-poli e outros nomes) \u00e9 um tipo de bateria de \u00edon de l\u00edtio com um eletr\u00f3lito de pol\u00edmero em vez de um eletr\u00f3lito l\u00edquido.<\/p>\n","protected":false},"author":1,"featured_media":4620,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[14],"tags":[],"class_list":["post-80566","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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