摘要
通过磁性分析研究了3种商品化磷酸铁锂(LiFePO4)的磁性杂质含量。LiFePO4中含有磷化铁(Fe2P)、三氧化二铁(Fe2O3)及单质铁等磁性杂质;磁性杂质会提高成品电池的自放电率。在实验条件下,经328 K储存后,磁性杂质物质的量含量为1.63%的LiFePO4制成的电池,自放电率约为磁性杂质含量为0.04%的LiFePO4制成的电池的5.6倍。
Magnetic impurities content in 3 kinds of commercialized lithium iron phosphate（LiFePO4） was investigated with magnetic measurements. The magnetic impurities such as ferrous phosphide（Fe2P）, ferric oxide（Fe2O3） and metallic iron were existed in LiFePO4. The magnetic impurities would increase the self-discharge rate of finished battery. In experimental conditions, after stored under 328 K, the self-discharge rate of battery prepared with LiFePO4 of 1.63 % （molar content） magnetic impurities was about 5.6 times than the one with 0.04% magnetic impurities.
出处
《电池》
CAS
CSCD
北大核心
2012年第6期314-317,共4页
Battery Bimonthly
基金
国家863计划项目(2012AA110407)
关键词
磷酸铁锂(LiFePO4)
磁性分析
磁化曲线
自放电
Key words：lithium iron phosphate（LiFePO4）
magnetic measurements
magnetization curve
self-discharge
