Atualmente, a bateria de fosfato de ferro-l\u00edtio \u00e9 uma das baterias mais utilizadas no mercado. Esse tipo de bateria possui alta seguran\u00e7a e longa vida \u00fatil. No entanto, o desempenho em baixas temperaturas da bateria de fosfato de ferro-l\u00edtio \u00e9 ligeiramente inferior ao de baterias de outros sistemas t\u00e9cnicos.<\/p>\n
A baixa temperatura afeta os eletrodos positivo e negativo, o eletr\u00f3lito e o ligante do fosfato de ferro-l\u00edtio. O pr\u00f3prio eletrodo positivo do fosfato de ferro-l\u00edtio tem condutividade eletr\u00f4nica relativamente baixa e \u00e9 propenso \u00e0 polariza\u00e7\u00e3o em ambientes de baixa temperatura, reduzindo assim a capacidade da bateria; afetado pela baixa temperatura, a velocidade de inser\u00e7\u00e3o do l\u00edtio-grafite \u00e9 reduzida e o l\u00edtio met\u00e1lico provavelmente precipitar\u00e1 na superf\u00edcie do eletrodo negativo. Se n\u00e3o for deixado por tempo suficiente ap\u00f3s o carregamento, coloque-o em Quando usado, o l\u00edtio met\u00e1lico n\u00e3o pode ser totalmente incorporado ao grafite novamente, e parte do l\u00edtio met\u00e1lico continua a existir na superf\u00edcie do eletrodo negativo, o que \u00e9 muito prov\u00e1vel que forme dendritos de l\u00edtio, o que afeta a seguran\u00e7a da bateria; em baixas temperaturas, a viscosidade do eletr\u00f3lito aumentar\u00e1 e a resist\u00eancia \u00e0 migra\u00e7\u00e3o de \u00edons de l\u00edtio tamb\u00e9m aumentar\u00e1. Al\u00e9m disso, no processo de produ\u00e7\u00e3o de fosfato de ferro-l\u00edtio, o adesivo tamb\u00e9m \u00e9 um fator muito cr\u00edtico, e a baixa temperatura tamb\u00e9m ter\u00e1 um impacto maior no desempenho do adesivo.<\/p>\n
Portanto, baterias de fosfato de ferro-l\u00edtio n\u00e3o s\u00e3o recomendadas para uso em baixas temperaturas.<\/p>","protected":false},"excerpt":{"rendered":"
At present, lithium iron phosphate battery is one of the most widely used batteries on the market. This kind of 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