电池2025，Vol.55Issue(6)：1257-1262,6.DOI:10.19535/j.1001-1579.2025.06.006
CH3 COONa对LiMn2O4高温性能的影响
Effect of CH3COONa on the performance of LiMn2O4 at high temperature
摘要
Abstract
In order to improve the high temperature charge-discharge cycle stability of LiMn2O4 cathode,the effects of CH3COONa on the electrochemical performance of LiMn2O4 cathode are studied by using constant current charge-discharge,cyclic voltage(C V),electrochemical impedance spectroscopy(EIS),XRD,energy dispersive X-ray spectroscopy(EDS)and other methods.When n(CH3COONa)∶n(LiMn2O4)=0.003∶1.000,LiMn2O4 has the best discharge specific capacity and large rate capability at room temperature,the specific discharge capacity is increased by 5.7 mAh/g at 2.0 C compared with the control group without addition of CH3 COONa.At 50 ℃,the specific discharge capacity of LiMn2O4 cathode increases at all rates,increased by 4.0 mAh/g at 0.2 C,the capacity retention rate is 97.7％after 200 cycles at 2.0 C in 3.0-4.3 V,which is higher than 93.0％without addition,the stability of high-temperature cycling is improved.关键词
锂离子电池/正极/高温性能/CH3COONa/LiMn2O4Key words
Li-ion battery/cathode/high temperature performance/CH3COONa/LiMn2O4分类
信息技术与安全科学引用本文复制引用
李顺琛,谷书华,林建兴,常海涛,王力臻..CH3 COONa对LiMn2O4高温性能的影响[J].电池,2025,55(6):1257-1262,6.基金项目
河南省高等学校重点科研项目计划基础研究专项(20zx008) （20zx008）
