强碱性LiOH溶液中乙醇对锂负极的缓蚀作用  

Inhibitive effect of ethanol on lithium anode in LiOH alkaline aqueous electrolytes

作　　者：倪尔福[1] 陈康华[1] 张子岩[1] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《电源技术》2010年第5期450-453,共4页Chinese Journal of Power Sources

基　　金：国家重点基础研究发展规划资助项目(2005CB623704);国家自然基金委创新研究群体科学基金项目(50721003)

摘　　要：在30℃4mol/LLiOH电解质溶液中,通过测量锂负极的寄生腐蚀析氢速率、极化曲线、电化学阻抗谱及电位-时间曲线,研究了不同浓度的乙醇在强碱性LiOH溶液中对锂负极的缓蚀性能。结果表明:乙醇是混合型缓蚀剂,其浓度存在一个最佳值,当浓度达到30mL/L时对锂的缓蚀作用最理想,缓蚀率接近60%,且在大电流放电条件下(300mA/cm2)的放电性能最好。The inhibition performance of ethanol as an inhibitor for lithium anode in 4 mol/L LiOH alkaline aqueous electrolytes at 30 ℃ was investigated using hydrogen evolution rate measurement at OCP, polarization curve, electrochemical impedance spectroscopy and voltage-time curve. The results show that ethanol is a mixed inhibitor; when its concentration is 30 mL/L, the inhibition efficiency is the best with nearly 60%, and the discharging property is the best at 300 mA/cm2.

关 键 词：乙醇 锂 析氢速率 缓蚀率 氢键 

分 类 号：TM912.9[电气工程—电力电子与电力传动]