电源技术2025，Vol.49Issue(12)：2523-2532,10.DOI:10.3969/j.issn.1002-087X.2025.12.008
负极硅碳掺混量对高比能电池性能影响的研究
Effect of SiC anode contents on performance of high specific energy battery
摘要
Abstract
A series of tests were conducted on lithium-ion batteries of the same model with SiC con-tent of 30％,40％,and 45％in the anode.The results show that increasing the SiC content in the an-ode leads to a decrease in initial efficiency and voltage plateau,thereby adversely affecting energy performance.Additionally,it accelerates the destruction of the electrode structure:when the content increases from 30％to 45％,the cycle life shortens by 304 cycles.Furthermore,a higher SiC content causes a surge in anode resistivity,thereby deteriorating low-temperature discharge performance.However,the introduction of a high-proportion SiC anode effectively reduces the coating amount of both cathode and anode sheets,shortening the lithium-ion migration path.This results in a 3.92％in-crease in 4.00 C discharge capacity retention rate and a 2.3℃ decrease in temperature rise;for 2.00 C charging,the constant current charging ratio is improved by 4.65％.Meanwhile,the lower elec-trode coating amount reduces side reactions with the electrolyte,improving high-temperature storage performance with a 0.76％increase in capacity recovery rate.关键词
锂离子电池/高能量密度/硅碳负极/电池体系设计Key words
lithium-ion battery/high energy density/silicon carbon anode/design of battery system分类
信息技术与安全科学引用本文复制引用
安琪,王知常,马洪运,慈鑫..负极硅碳掺混量对高比能电池性能影响的研究[J].电源技术,2025,49(12):2523-2532,10.基金项目
天津市科技计划项目(24YDLQGX00100) （24YDLQGX00100）
