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In-situ Growth of Flower-Like MnO2/Graphene Hydrogel Mesoporous Electrode Material for Supercapacitors
Integrated Ferroelectrics ( IF 0.7 ) Pub Date : 2020-03-23 , DOI: 10.1080/10584587.2020.1728629
Bingyang Yang 1 , Xin Jin 1 , Yue Wang 1 , Yi Yu 1 , Baopeng Zhang 1 , Huanjun Song 1
Affiliation  

Abstract A simple and environmentally friendly route is developed to produce flower-like MnO2/graphene hydrogel (MnO2/GH) composites with mesoporous structure. The results show that flower-like MnO2 is firmly adhered to the surface and interior of GH. Compared with pure MnO2 and GH, the electrode of MnO2/GH composites exhibits high specific capacitance of 293.7 F/g at 0.5 A/g, and over 87.3% of capacitance has maintained after cycling 2000 times. The excellent electrical conductivity is basically attributed to the large specific surface, the stability microstructure and good conditions for ion-diffusion and ion-transport by MnO2/GH composites.

中文翻译:

用于超级电容器的花状MnO2/石墨烯水凝胶介孔电极材料的原位生长

摘要 开发了一种简单环保的制备具有介孔结构的花状MnO2/石墨烯水凝胶(MnO2/GH)复合材料的路线。结果表明花状MnO2牢固地附着在GH的表面和内部。与纯 MnO2 和 GH 相比,MnO2/GH 复合材料的电极在 0.5 A/g 下表现出 293.7 F/g 的高比电容,并且在循环 2000 次后仍保持超过 87.3% 的电容。优异的导电性主要归功于MnO2/GH复合材料的大比表面积、稳定的微观结构以及良好的离子扩散和离子传输条件。
更新日期:2020-03-23
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