High-performance self-assembly MnCo2O4 nanosheets for asymmetric supercapacitors

查看全文 作　　者：Jianwei [1]Li;Dongbin [1]Xiong;Linzhe [1]Wang;Maleki Kheimeh Sari [1]Hirbod;Xifei [1]Li

机构地区：[1]Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering, Xi’an University of Technology

出　　处：《Journal of Energy Chemistry》索引2019年第28卷第10期,共7页

基　　金：supported by the National Natural Science Foundation of China (51572194);the National Key Research and Development Program of China (2018YFB0105900) 摘　　要：In this study,MnCo2O4 nanosheets were proposed to be utilized as an electrode material for supercapacitors.A two-step hydrothermal method with post-annealing treatment was employed in preparation of the nanostructures.MnCo2O4 electrode delivered a high specific capacitance of 2000 F g^-1 at 0.5 A g^-1,remarkable high-rate capability of 1150 F g^-1 at 20 A g^-1,and an excellent cycling stability of 92.3%at 5 A g^-1 after 5000 cycles.It is found that a three-electrode supercapacitor based on MnCo2O4 exhibits a promising electrochemical performance,better than the other similar materials,benefited from the synergistic effects of MnCo2O4 nanosheets.In fact,the self-assembly of nanosheets structure with high specific surface area and mesoporous structure can potentially enhance the electrochemical performance of supercapacitors. 关键词：HIGH-PERFORMANCE SELF-ASSEMBLY MnCo2O4 NANOSHEETS ASYMMETRIC SUPERCAPACITORS

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High-performance self-assembly MnCo2O4 nanosheets for asymmetric supercapacitors

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