锂离子电池厚电极结构设计的研究进展  

Research progress of lithium-ion batteries thick-electrode architectural design

作　　者：何仁杰 李书萍 王许敏 余创 程时杰[2] 谢佳 HE Renjie;LI Shuping;WANG Xumin;YU Chuang;CHENG Shijie;XIE Jia(School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学材料科学与工程学院,武汉430074 [2]华中科技大学电气与电子工程学院,武汉430074

出　　处：《材料工程》2022年第10期38-54,共17页Journal of Materials Engineering

基　　金：国家自然科学基金项目(U1966214)。

摘　　要：为了满足储能系统和电动汽车市场对于高能量密度和快充的需求,兼具高能量和高功率密度的锂离子电池得到了广泛的关注。厚电极结构设计能够显著提高电池的能量密度并降低成本,且能与各种电极材料相兼容,是发展高能量密度锂离子电池的研究热点之一。厚电极通常面临着力学性能差和反应动力学慢等问题,因此构建力学性能良好和完善的锂离子及电子传输网络的厚电极至关重要。本文首先分析了厚电极的电化学特性和关键科学问题,然后梳理了目前构建厚电极的各种策略及其优势,最后探讨了厚电极的设计原则和发展方向。To meet the requirements of high energy density and fast charge for energy storage systems and electric vehicles,the high-energy and high-power density lithium-ion batteries have attracted numerous attentions.Designing thick-electrode can significantly increase energy density and reduce cost,and is also compatible with various electrode materials,which makes it one of hottest researches for the development of high-energy density lithium-ion batteries.Thick electrodes usually suffer from poor mechanical properties and sluggish reaction kinetics.Therefore,it is very important to construct a thick electrode with good mechanical properties and fast transport network for lithium ion and electron.The electrochemical behavior and key scientific issues of thick electrodes were firstly analyzed in this review,the current strategies for constructing thick electrodes and their advantages were then introduced,and finally the design principles and the development direction of thick electrodes were pointed out.

关 键 词：锂离子电池 厚电极 高能量密度 高功率密度 迂曲度 

分 类 号：TM910.3[电气工程—电力电子与电力传动]