纳米结构氧化锰/碳复合材料的制备及其超级电容器性能研究（英文）  

Hydrothermal Synthesis of Nanostructured Manganese Oxide/Carbon Composites as Electrochemical Capacitors Electrodes

作　　者：管洪涛[1] 陈刚[1] 王燕[1] 董成军[1] 王毓德[1] 赵鹤云[1] 

机构地区：[1]云南大学,云南昆明650091

出　　处：《稀有金属材料与工程》2016年第S1期1-6,共6页Rare Metal Materials and Engineering

基　　金：The Application Basic Research Fund of Yunnan Province(2013FB006);the Youth Talents Program of Yunnan University(XT412003);the Foundation of Yunnan Provincial Educational Committee(2013Z052);the Yunnan Provincial Undergraduate Training Programs for Innovation and Entrepreneurship(201310673002)

摘　　要：通过水热法在150℃保温6h和9h制备了纳米带状氧化锰与碳复合材料（MnO（OH）/C）。表征和分析结果表明,MnO（OH）为纳米带状结构,直径为48nm,长度为几微米,碳为近似球形结构,直径约为50nm。以1.0mol/L的Na2SO4溶液为电解液,以所制备的MnO（OH）/C复合材料为工作电极,对其超级电容器循环伏安和恒流充放电性能进行了分析。结果表明,在0.2A/g的电流密度下,电极材料的比电容可达到116.3F/g,当电流密度增加至2.0A/g时,其比电容保持率可达82.6%。Nanoribbon-like manganese oxide(MnO(OH))/carbon composites were synthesized with a hydrothermal method at 150 °C for 6 h and 9 h. The MnO(OH) is in diameters of 4~8 nm and lengths up to several micrometers. The carbon particulates are of sphere-like morphological structures with diameters of 50 nm. With the reaction time increasing from 6 h to 9 h, the shapes of the carbon particulates turn to more regular. The cycle voltammetry and galvanostatic charge-discharge performances of the composites were analyzed with the composites as the working electrodes and nickel foam as the counter electrodes in 1.0 mol/L Na_2SO_4 electrolytes. The results show that a specific capacitance of 116.3 F/g can be obtained at a current density of 0.2 A/g and a retention of 82.6% is observed when current density increases to 2.0 A/g.

关 键 词：超级电容器 氧化锰 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]