井冈山大学学报（自然科学版）2025，Vol.46Issue(5)：19-26,8.DOI:10.3969/j.issn.1674-8085.2025.05.003
基于磁控溅射法锂金属表面Sn修饰研究
Sn MODIFICATION ON LITHIUM METAL SURFACES BASED ON MAGNETRON SPUTTERING METHOD
摘要
Abstract
One of the most energy-dense anodes for energy storage devices is lithium metal,which has a large theoretical capacity and a low working potential voltage.Its strong chemical activity,which results in constant reactions with electrolytes,limits its practical use.This leads to low coulombic efficiency and the formation of lithium dendrites,which raises safety issues.In order to overcome these problems,magnetron sputtering was used to directly cover Li metal foil with amorphous Sn thin films ranging in thickness from 0 to 100 nm,and the ideal thickness was investigated.The results demonstrate that the highest cycle life and lowest contact impedance in symmetric lithium batteries were achieved at a thickness of 30 nm for Sn deposition on the lithium foil surface.And as the anodes with lithium iron phosphate to form a battery,its electrochemical performance is optimal,and its specific capacity is 130.4 mAh·g-1 in the first week of discharge at 1.0 C(1.0 C=170.0 mA·g-1),and the specific capacity can still be maintained at 119.9 mAh·g-1 after 200 weeks of cycling,which shows a good cycling performance,as well as a better multiplicity performance.关键词
金属锂负极/表面修饰/磁控溅射/锂电池/枝晶抑制Key words
Lithium metal anode/surface modification/magnetron sputtering/lithium battery/dendrite inhibition分类
信息技术与安全科学引用本文复制引用
王建宇,王佳杰,王春花,王瑜,邓盛珏..基于磁控溅射法锂金属表面Sn修饰研究[J].井冈山大学学报（自然科学版）,2025,46(5):19-26,8.基金项目
国家自然科学基金青年基金项目(52302235) （52302235）
安徽省高等学校自然科学研究重大项目(2024AH040172) （2024AH040172）
