磷酸铁锂电池低温性能的改性方法简述

doi:10.11944/j.issn.1000-0518.2020.04.200005

摘要/Abstract

摘要：

LiFePO₄电极材料具有比容量高、工作电压稳定、成本低及环境友好等优点,被视为理想的锂离子电池正极材料,是目前电动汽车主要正极材料之一。然而在低温下LiFePO₄电池性能显著降低,限制了其在冬季和高寒地区中的使用。研究人员分析了低温下磷酸铁锂电池性能快速下降的原因,并提出解决办法。本文概述了提高磷酸铁锂电池低温性能的4个方法:1)脉冲电流;2)电解液添加剂;3)表面包覆;4)体相掺杂。

关键词: 锂离子电池, 磷酸铁锂, 低温性能, 脉冲电流, 阻抗

Abstract:

Lithium iron phosphate (LiFePO₄) electrode material has the advantages of high specific capacity, stable operating voltage, low cost and environmental friendliness. It is regarded as an ideal cathode material for lithium ion batteries and is one of the main cathode materials for electric vehicles. However, the performance of LiFePO₄ batteries decreases significantly at low temperatures, limiting their use in winter and cold regions. The researchers analyzed the reasons and proposed some solutions. This mini-review summaries four methods for performance improve of LiFePO₄ battery at low temperature: 1)pulse current; 2)electrolyte additives; 3)surface coating; and 4)bulk doping of LiFePO₄.

Key words: lithium-ion battery, lithium iron phosphate, low temperature performance, pulse current, impedance

胡晨,金翼,朱少青,徐晔,水江澜. 磷酸铁锂电池低温性能的改性方法简述[J]. 应用化学, 2020, 37(4): 380-386.

HU Chen,JIN Yi,ZHU Shaoqing,XU Ye,SHUI Jianglan. Methods for Improving Low-Temperature Performance of Lithium Iron Phosphate Based Li-Ion Battery[J]. Chinese Journal of Applied Chemistry, 2020, 37(4): 380-386.

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