金属│固体电解质│含水凝胶│石墨体系的研究  

Study on Metal|Solid Electrolyte|Gel Membrane Containing Water|Graphite System

作　　者：刘景东[1] 

机构地区：[1]福州大学化学化工学院,福建福州350002

出　　处：《电化学》2007年第4期420-424,共5页Journal of Electrochemistry

基　　金：福建省自然科学基金(U0650013);福州大学科技发展基金(2006-XQ-10)资助

摘　　要：应用点缺陷模型和双层模型分析了金属│固体电解质│含水凝胶│石墨体系贮藏和放电时金属表面氧化膜的变化.在固体电解质含有微量水分的情况下,微量水分有助于金属表面形成松层,但由于水分子与紧密钝化膜的持续作用,金属表面松层厚度会不断增长,孔率降低,使得电池的电压和放电电流下降.松层的孔率强烈影响膜溶解行为,与紧密钝化膜的电学特性一样,松层也是一种半导体.The characteristic of oxide layer formed On the surface of metal in Metal I Solid Electrolyte ｜ Gel Membrane Containing Water ｜ Graphite System was studied by using Point Defect Model and Barrier Layer/Porous Layer Model. Trace water in solid electrolyte helped to form porous layer at the surface of metal, The thickness of porous layer increased due to water molecule reacts with barrier layer continuously, which lowered the porosity and decreased the electromotive potential and current. Porosity influenced solubility behavior of oxide layer intensely. Like barrier layer, porous layer is also a semiconductor.

关 键 词：点缺陷模型 双层模型 钝化膜 镁电极 锂水电池 

分 类 号：TM912[电气工程—电力电子与电力传动]