化工学报2024，Vol.75Issue(6)：2322-2331,10.DOI:10.11949/0438-1157.20240238
锂金属负极界面热量分布演化机理
Lithium metal anode interface thermal distribution evolution mechanism
摘要
Abstract
Lithium metal batteries are considered to be a favorable choice for high energy density batteries due to its high theoretical compared capacity.However,the interface instability has always been the biggest challenge for the commercial development of lithium metal batteries.The evolution mechanism of the thermal field is a key factor affecting the cyclic life during the evolution of lithium metal interfaces.Here,the heat distribution evolution mechanism of the lithium metal anode interface is revealed and quantified through the solid electrolyte interface(SEI)heat distribution evolution model.The three influencing factors are as follows:the ratio of SEI to the diffusion capacity of electrolytes,the electrolyte properties,the anisotropy in the SEI.The results show that the maximum temperature gradient at an appropriate proportion is relatively small.The concentration of the electrolyte affects the performance of the electrolyte,which will affect the thermal distribution of the lithium metal anode interface.The SEI anisotropy can induce lateral growth of lithium dendrites,which is conducive to uniform distribution of interfacial heat.This work provides certain theoretical guidance for the interface design of lithium metal batteries.关键词
锂金属负极/热分布/SEI/锂枝晶Key words
lithium metal anode/thermal distribution/SEI/lithium dendrites分类
信息技术与安全科学引用本文复制引用
李润龙,徐童,陈飞,马成伟..锂金属负极界面热量分布演化机理[J].化工学报,2024,75(6):2322-2331,10.基金项目
云南省科技厅昆明理工大学双一流创建联合专项(202301BE070001-029) （202301BE070001-029）
云南省科技厅基础研究专项(202401CF070129) （202401CF070129）
