多孔电极不同粒径分布的比较研究

Comparative Study on Different Particle Size Distributions of Porous Electrodes

摘要: 锂离子多孔电极由电极活性材料、粘结剂、导电剂等粘结而成。而目前的电极设计是可以通过优化设计电极微观多孔结构来提高电池内部的液相离子与固相离子的导电速率与传输速率。本文着重分析了电极活性颗粒粒径分布对多孔电极的极化热与电池放电时间的影响，结果发现，随着颗粒粒径分布的降低，多孔电极的极化热产热降低、电池容量显著增加。该分析有利于指导多孔电极的正向设计。

Abstract: The lithium-ion porous electrode is made by bonding electrode active materials, adhesives, conduc-tive agents, etc. The current electrode design can improve the conductivity and transmission rate of liquid and solid ions within the battery by optimizing the porous structure of the electrode. This paper focuses on analyzing the influence of particle size distribution of electrode active particles on the polarization heat of porous electrode and battery discharge time. The results show that with the decrease of particle size distribution, the polarization heat generation of porous electrode decreases and battery capacity significantly increases. This analysis is helpful for guiding the forward design of porous electrodes.