NMP对LA132制备的正极片性能的影响

发布时间：2018-01-05 18:37

  本文关键词：NMP对LA132制备的正极片性能的影响　出处：《电池》2015年06期 　论文类型：期刊论文

  更多相关文章： N-甲基吡咯烷酮(NMP) LA 粘附力 柔韧性 电化学性能

【摘要】：采用商品化的磷酸铁锂(LiFePO_4)、N-甲基吡咯烷酮(NMP)和水性粘结剂LA132作为原料,制备LiFePO_4正极片,从极片粘附力、柔韧性及电化学性能等方面,研究NMP对采用水系粘结剂LA132制备的正极片性能的影响。当w(NMP)≤3%时,正极片的粘附力从20 N/m增加到50 N/m,柔韧性从D10提高到D1;当w(NMP)≤1%时,电池以1.0 C的电流在2.5~4.2 V循环300次,容量衰减小于8%,且不影响极片活性物质的充放电比容量及充放电特性。
[Abstract]:LiFePO_4 positive electrode was prepared by commercial lithium iron phosphate (LiFePO _ 4), N-methylpyrrolidone (LA132) and water-borne binder (LA132). The effects of NMP on the properties of positive plates prepared with water system binder LA132 were studied from the aspects of adhesion, flexibility and electrochemical properties. The adhesion force of positive plate increased from 20 N / m to 50 N / m, and the flexibility increased from D 10 to D 1. When WNMP) 鈮，

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