3D hierarchical flower-like MnCo2O4@NiO nanosheet arrays for enhanced-performance asymmetric supercapacitors
Journal of Alloys and Compounds(2022)
摘要
Promising hydrothermal synthesis and calcination strategy is used in manufacturing the 3D hierarchical MnCo2O4 @NiO nanosheets. This paper is a preliminary attempt to prepare a novel MnCo2O4 @NiO electrode through an effectual hydrothermal procedure, in which the nickel foam is used as a backbone structure. At a current density of 1 A g−1, the positive electrode material reveals a maximum specific capacitance of 1914 F g−1. The specific capacitance of MnCo2O4 @NiO remains 95.4% irrespective of 8000 cycles. The as-assembled supercapacitor (SC) exhibits an energy density of 40.04 Wh kg−1 at a power density of 770 W kg−1. The result of this research highlights the evidence of the 3D hierarchical MnCo2O4 @NiO structure for being an encouraging candidate for the forthcoming energy storage utilization.
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关键词
MnCo2O4 @NiO,Hydrothermal,Hierarchical structure,Electrode material,Supercapacitor,Cycling stability
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