铜箔厚度对锂离子电池电性能的影响

Effect of copper thickness on electric performance of lithium-ion batteries

将15和9μm两种不同厚度铜箔用于制备18650锂电池,对两组电池的交流内阻、放电倍率、充电倍率、高低温、高温存储条件下的电化学性能进行了比较研究。结果表明,采用15μm厚铜箔的电池具有更好的电学性能指标,在制造动力锂电池上更加优越而高效。

The copper foil with the thickness of 15 and 9 μm was used to prepare the 18650 lithium-ion batteries. The performance of two kinds of batteries were compared, such as AC internal resistance, charging and discharging rate, electrochemical performance at high and low temperature and the storage performance under high temperature. The results show 18650 lithium-ion battery with 15 μm copper foil has the better electrochemical performance.