Ultrathin MnO2 nanosheets grown on fungal conidium-derived hollow carbon spheres as supercapacitor electrodes
文献类型： 外文期刊
第一作者： Mao, Cuiping
作者： Mao, Cuiping;Liu, Sangui;Pang, Lei;Xu, Maowen;Lu, Zhisong;Mao, Cuiping;Liu, Sangui;Pang, Lei;Xu, Maowen;Lu, Zhisong;Sun, Qi;Liu, Yang
作者机构：
期刊名称：RSC ADVANCES （ 影响因子：3.361； 五年影响因子：3.39 ）
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年卷期：
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收录情况： SCI
摘要： Developmen(t) of biomass-derived carbon/MnO2 composites for energy applications has recently been attracting tremendous attention. However, the combination of MnO2 nanosheets and conidia-derived hollow carbon spheres for supercapacitor applications has never been realized. In this work, we develop a facile method to grow MnO2 nanosheets on hollow carbon spheres derived from Aspergillus flavus conidia. Ultrathin MnO2 nanosheets are uniformly grown on the surface of conidium-derived hollow carbon spheres. Sulfur element from the conidia is doped in the composites and the amount of MnO2 in the material is similar to 50.2 wt%. The as-prepared MnO2-carbon sphere composited electrode possesses a high specific capacitance of 263.5 F g (1) at 1 A g (1). After 2000 cycles, the specific capacitance value remains 83% of retention and the coulombic efficiency remains as high as 94%, demonstrating the excellent cycling stability.
分类号： O6
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