LiPON固体电解质膜对金属锂电极的保护作用  

Protective Effect of LiPON Solid Electrolyte Films on Lithium Electrodes

作　　者：丁飞 刘兴江 张晶 杨凯 桑林 李凌妮 

机构地区：[1] Tianjin Institute of Power Sources, Tianjin 300381, China

出　　处：《稀有金属材料与工程》2010年第9期1664-1667,共4页Rare Metal Materials and Engineering

基　　金：天津市应用基础研究计划项目(07JCYBJC03600)

摘　　要：制备LiPON固体电解质薄膜,通过电沉积手段获得由LiPON膜保护的金属锂电极,测试该电极在有机电解液体系中的电化学性质。结果表明:LiPON膜的存在,抑制了锂电极和电解液之间的非法拉第反应,使锂电极具有更加稳定的电极/电解液界面。由于LiPON膜的保护作用,金属锂电极在充放电循环中也表现出优越的界面稳定性,从而获得更高的库伦循环效率和更好的电池循环寿命。A LiPON solid electrolyte film was prepared, and then a lithium metal electrode protected by the LiPON film was obtained through an electrodeposition method. The electrochemical behaviors of the electrode were tested in nonaqueous organic electrolyte. Results show that because of LiPON film the non-Faraday reactions between the lithium electrode and the electrolyte were depressed, resulting in a more stable lithium/electrolyte interface. As a result of the LiPON protection, the lithium electrode present excellent interface stability during charge/discharge cycles; therefore higher Coulombic cycle efficiency and longer cycle-life are obtained.

关 键 词：LIPON 固体电解质膜 金属锂电极 保护作用 电解液体系 电池循环寿命 界面稳定性 电解质薄膜 电解液界面 电化学性质 充放电循环 循环效率 法拉第 电沉积 制备 抑制 结果 反应 测试 

分 类 号：TM912.9[电气工程—电力电子与电力传动]