人工晶体学报2017，Vol.46Issue(6)：1092-1098,7.
氧化还原法制备氧化锰超级电容器电极材料
Preparation of Manganese Dioxides by Redox Reactions as Electrode Materials for Supercapacitors
摘要
Abstract
Mesoporous manganese dioxides were prepared by a facile redox reaction using potassium permanganate (KMnO4) and polyvinyl pyrrolidone (PVP) as raw material.It is found that phases and microstructures of products are remarkably influenced by the concentration of KMnO4.As the concentration of KMnO4 increases from 0.1 mol·L-1 to 0.3 mol·L-1, the product transforms from crystalline Mn3O4 with a low surface area of 13.6 m2·g-1 to amorphous MnO2 with a relatively high surface area of 60 m2·g-1.Electrochemical tests suggest that the optimal amorphous MnO2 possesses a high specific capacitance of 442 F·g-1 at a current density of 1 A·g-1 in 2 mol·L-1 aqueous KOH electrolyte, along with 72.6%of the initial specific capacitance maintains after 1100 cycles at a current density of 5 A·g-1.关键词
氧化锰/氧化还原法/超级电容器Key words
MnOx/redox reaction/supercapacitor分类
信息技术与安全科学引用本文复制引用
任强,康利涛,解玲丽,史明杰..氧化还原法制备氧化锰超级电容器电极材料[J].人工晶体学报,2017,46(6):1092-1098,7.基金项目
山西省科学技术基金(2014021019-4) （2014021019-4）
山西省科技关键创新研究团队(2012041011) （2012041011）
