有色金属科学与工程2025，Vol.16Issue(3)：417-424,447,9.DOI:10.13264/j.cnki.ysjskx.2025.03.010
钠金属负极近常温退火工作的长寿命电池
Sodium-metal cathode annealing at near room-temperature for long life batteries
摘要
Abstract
In the process of charging a sodium(Na)metal battery,the electrons of the positive Na+are reduced into metal and deposited on the surface of the cathode.With the cycle of the battery,the sediment continuously increases and gradually forms the dendrite,limiting the battery life.In this study,the Na metal cathode was worked at near room temperature(35℃)at an annealing condition for recrystallization.Due to the low melt point(97℃),the metallic Na with dendritic-free plated on the cathodes was obtained.Accordingly,the sodium vanadium phosphate(NVP)||Na full cell indicated a discharge-specific capacity of 83.8 mAh/g even after 300 cycles at a C-rate of 1C.The results show that the working condition of 35℃near room-temperature thermal treatment eliminates the dentrites and forms a cathode surface without the dentrite,thus improving the battery's electrochemical performance.关键词
钠金属电池/枝晶/近常温/再结晶Key words
sodium-metal battery/dendrite crystal/near room-temperature/recrystallization分类
矿业与冶金引用本文复制引用
郑怡平,胡训建,黎业生,吴子平..钠金属负极近常温退火工作的长寿命电池[J].有色金属科学与工程,2025,16(3):417-424,447,9.基金项目
国家自然科学基金资助项目(22179055) （22179055）
