Hybrid MnO2@NiCo2O4 nanosheets for high performance asymmetric supercapacitors

Zhao, Depeng1; Wu, Xiang1; Guo, Chuanfei2

2018-06

10.1039/c8qi00170g

Inorganic Chemistry Frontiers   影响因子和分区

2052-1553

NiCo2O4 is a promising material for supercapacitors because of its high theoretical capacity. However, this material often suffers from low cycling stability. In this work, hybrid MnO2@NiCo2O4 nanosheets grown on Ni foam have been synthesized through a facile hydrothermal approach. The MnO2@NiCo2O4 electrode delivers a high specific capacitance of 3086 mF cm(-2) at a current density of 2 mA cm(-2), and the as-assembled asymmetric supercapacitors yield a high energy density of 72.1 W h kg(-1) and an excellent cycle life with a 97.3% capacitance retention after 6000 cycles. The outstanding electrochemical performance could be attributed to the unique hybrid structures of the electrode materials. This shows that the MnO2@NiCo2O4 hybrid structures as the electrode materials might be potentially useful for next generation high performance supercapacitors.

SCI ; EI

英语

通讯

Nature Science Fund of Liaoning province[20170540671]

Chemistry

Chemistry, Inorganic & Nuclear

WOS:000435296200017

ROYAL SOC CHEMISTRY

20182505319255

Capacitance ; Cobalt compounds ; Electrochemical electrodes ; Hybrid materials ; Manganese oxide ; Nanosheets ; Supercapacitor

Electricity: Basic Concepts and Phenomena:701.1 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Solid State Physics:933

Web of Science

1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Zhao, Depeng,Wu, Xiang,Guo, Chuanfei. Hybrid MnO2@NiCo2O4 nanosheets for high performance asymmetric supercapacitors[J]. Inorganic Chemistry Frontiers,2018,5(6):1378-1385.

Zhao, Depeng,Wu, Xiang,&Guo, Chuanfei.(2018).Hybrid MnO2@NiCo2O4 nanosheets for high performance asymmetric supercapacitors.Inorganic Chemistry Frontiers,5(6),1378-1385.

Zhao, Depeng,et al."Hybrid MnO2@NiCo2O4 nanosheets for high performance asymmetric supercapacitors".Inorganic Chemistry Frontiers 5.6(2018):1378-1385.