化工进展2018，Vol.37Issue(7)：2620-2626,7.DOI:10.16085/j.issn.1000-6613.2017-1657
锂离子电池电极颗粒分布对电化学性能影响的分析
Analysis of the effects of electrode particle size distribution on the electrochemical performances of lithium ion battery
摘要
Abstract
The particle size distribution(PSD)of active materials is one of the important performance parameters of the lithium ion battery electrode. Based on a multi-particle model with different particle size distributions,the electrochemical performance of the lithium ion battery was simulated and analyzed during its discharge process. The effects of different particles on the whole discharge process were illustrated,and the interactions between particles were discussed. Results indicate that the performance of Li-ion battery was greatly influenced by the PSD. In the early stage of the discharge, the intercalation reaction of lithium ion occurs mainly on the particles with small size,which are then saturated in the late stage. The particle surface reaction is transferred from small particles to large particles because they have more internal vacancies. Therefore,in the battery manufacturing process, the size of the electrode active material particles should be as uniform as possible,which can reduce the polarization caused by the nonuniform particles.关键词
锂离子电池/多颗粒模型/粒度分布/放电过程模拟Key words
lithium ion battery/multiple particle model/particle size distribution/discharge process simulation分类
化学化工引用本文复制引用
王靖,柯少勇,黄贤坤,刘永忠..锂离子电池电极颗粒分布对电化学性能影响的分析[J].化工进展,2018,37(7):2620-2626,7.基金项目
国家自然科学基金(21676211,21606174)及国家大学生创新训练项目(GJ201610698073). （21676211,21606174）
