碳酸丙烯酯
碳酸锂
碳酸盐
鉴定(生物学)
材料科学
化学工程
锂(药物)
矿物学
无机化学
电化学
化学
冶金
有机化学
物理化学
工程类
离子
心理学
离子键合
精神科
生物
植物
电极
作者
Doron Aurbach,M. L. Daroux,Peter W. Faguy,Ernest Yeager
出处
期刊:Journal of The Electrochemical Society
[The Electrochemical Society]
日期:1987-07-01
卷期号:134 (7): 1611-1620
被引量:517
摘要
FTIR, IR, and XPS have been used to study the films formed on lithium in propylene carbonate solutions of ,, and . Over a range of conditions, the main components detected in the initial surface films were lithium alkyl carbonates . Another alkyl carbonate solvent, diethyl carbonate, was found to react with lithium to form lithium ethyl carbonate, . In addition to solvent reduction, XPS measurements gave indication of salt reduction reactions. , , and were reduced by lithium to form halide ions, which were detected on the lithium surface. Two possible mechanisms for the formation of alkyl carbonates are discussed. One is the nucleophilic reaction of propylene carbonate with basic species such as OH−, while the other involves one‐electron reduction of propylene carbonate by lithium metal, followed by free radical termination reactions. When high concentrations of water were present, lithium carbonate was formed by further reaction of the alkyl carbonates with water. On lithium surfaces without a mechanically stable surface film, such as those of lithium/mercury amalgams, the reduction reaction is believed to proceed by an overall two‐electron process, and the primary product is lithium carbonate.
科研通智能强力驱动
Strongly Powered by AbleSci AI