Simulated annealing reconstruction and characterization of a LiCoO＿2 Lithium-ion battery cathode  

作　　者：WU Wei JIANG FangMing 

机构地区：[1]Laboratory of Advanced Energy Systems, Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences

出　　处：《Chinese Science Bulletin》2013年第36期4692-4695,共4页

基　　金：supported by the Program of"100 Talents"of Chinese Academy of Sciences and the Amperex Technolgy Limited-Dongguan

摘　　要：We reconstruct the three-dimensional microstructure of a cathode from a commercial LiCoO2Lithium-ion battery with an adapted simulated annealing approach.The real size distribution curve of LiCoO2particles is applied to regulate the reconstruction process.By discretizing a 40 m 40 m 40 m cathode volume with 8000000 numerical cubes,the cathode involving three individual phases:(1)LiCoO2as active material,(2)pores or electrolyte,and(3)additives(polyvinylidene fluoride+carbon black)is reconstructed.Characterization of the reconstructed cathode gives important structural and transport properties including volume-specific surface area between phases,tortuosity and geometrical connectivity of individual phase.We reconstruct the three-dimensional microstructure of a cathode from a commercial LiCoO2 Lithium-ion battery with an adapted simulated annealing approach. The real size distribution curve of LiCoO2 particles is applied to regulate the reconstruction process. By discretizing a 40 μm×40 μm×40 μm cathode volume with 8000000 numerical cubes, the cathode involving three individual phases： （1） LiCoO2 as active material, （2） pores or electrolyte, and （3） additives （polyvinylidene fluoride＋carbon black） is reconstructed. Characterization of the reconstructed cathode gives important structural and transport properties including volume-specific surface area between phases, tortuosity and geometrical connectivity of individual phase.

关 键 词：模拟退火方法 锂离子电池 钴酸锂 阴极 三维微结构 表征 聚偏氟乙烯 分布曲线 

分 类 号：TM912[电气工程—电力电子与电力传动] TP301.6[自动化与计算机技术—计算机系统结构]