直接电解法制备二氧化锰正极的研究  

A manganese dioxide positive electrode prepared by using a direct electrolyzing method

作　　者：程林[1] 童庆松[1] 施继成[1] 徐伟[1] 吕艺惠[1] 

机构地区：[1]福建师范大学化学与材料学院,福建福州350007

出　　处：《功能材料》2007年第4期616-618,共3页Journal of Functional Materials

基　　金：教育部重点资助项目(03065;JA02159);福建省自然科学基金(E0510014);福建省科技厅资助项目(2005K012)

摘　　要：首次通过电解方法直接制得二氧化锰-碳电极。通过恒电流放电、XRD衍射、差热-热重实验以及环境扫描电镜等现代实验方法研究了合成条件与放电性能的关系。结果表明,在二氧化锰-碳电极上经过420℃处理的二氧化锰具有四方结构(空间群P42/ mnm)。以0．1C的电流倍率放电时放电容量达到219mAh/g。不必涂敷粘结剂,二氧化锰就可以与石墨集电极牢固的结合在一起,直接作为正极使用。A manganese dioxide - carbon positive electrode was firstly prepared by using a direct electrolyzing method. The relationship between sintering temperature and discharge performance was studied using the discharge experiment with constant current, XRD patterns, TG-DTA and environmental SEM techniques, The experimental results show that the manganese dioxide samples on the manganese dioxide - carbon positive electrode sintered at 420℃ consisted of tetragonal phase （space group. P42/mnm） exhibits a discharge capacity of 219mAh/g at a discharge current of 0. 1C. The as-prepared manganese dioxides can tightly combine with carbon film electrode without using cohesive material to serve as the positive electrode directly.

关 键 词：二氧化锰-碳电极 放电性能 晶相结构 烧结温度 

分 类 号：O614[理学—无机化学]