化学改性MnO_2的电化学性能研究  

STUDY ON ELECTROCHEMICAL PROPERTIES OF CHEMICALLY-MODIFIED MnO_2

作　　者：吴在玖 

机构地区：[1]紫金矿业集团股份有限公司,福建上杭364200

出　　处：《矿冶》2006年第1期38-41,共4页Mining And Metallurgy

摘　　要：本文通过化学方法掺入一些离子(Bi3+,Pb2+,Co2+)制备了改性二氧化锰,对样品进行扫描电镜检测、充放电及循环伏安实验。结果表明,掺铋摩尔比为0.1的改性二氧化锰经过80次充放电循环后,电极容量还能保持初始容量的70%,显示了很好的可充性,样品颗粒呈球状或椭圆状,有利于改善二氧化锰的可充性。Modified MnO2 was synthesized by （Bi^3＋ , Pb^2＋ ,Co^2 ＋ ） the introduction of dopant. The electrochemical studies werecarried out by charge-discharge, cyclic voltammetry and the morphologies characterized by SEM analysis. Results indicated that the compound still retained about 70 % of its initial discharge capacity after 80 cycles by Bi -substitutions of 0.1 mole rate and exhibited a good cycling performance. The morphologies of sample was circle or ellipse and was favorable to enhancing the cycling performance.

关 键 词：改性二氧化锰 可充性 掺杂离子 

分 类 号：TM911.14[电气工程—电力电子与电力传动]