新型炭材料2016，Vol.31Issue(5)：545-549,5.
MnO2/煤基石墨烯纳米复合材料的制备及其电化学性能
Preparation of MnO2/coal-based graphene composites for supercapacitors
摘要
Abstract
The low-cost production of high performance functional materials based on graphene remains a challenging task. One of the options for tackling this problem is to develop new processes based on cheap starting materials such as coal. Coal-based gra-phene precursors were prepared from purified Taixi anthracite by catalytic graphitization combined with an improved Hummers meth-od. These were mixed with MnO2 and reduced by a low temperature plasma to make MnO2/coal-based graphene nanocomposites. The composites were studied by FT-IR, XRD, TEM and SEM. Their electrochemical performance was evaluated using cyclic volta-mmetry and galvanostatic charge/discharge. Results show that MnO2 has been even lydeposited on the graphene surface and the spe-cific capacitance of the composite as an electrode in a supercapacitor is much higher than that of coal-based graphene without MnO2 . The highest capacitance is 281. 1 F/g, which is 261. 2% of the value for coal-based graphene.关键词
太西煤/煤基石墨烯/电化学性能/纳米复合材料Key words
Taixi coal/Coal-based graphene/Electrochemical properties/Nanocomposites分类
化学化工引用本文复制引用
张亚婷,李景凯,刘国阳,蔡江涛,周安宁,邱介山..MnO2/煤基石墨烯纳米复合材料的制备及其电化学性能[J].新型炭材料,2016,31(5):545-549,5.基金项目
国家自然科学基金(21276207, U1203292).@@@@National Natural Science Foundation of China (21276207, U1203292) （21276207, U1203292）
