NDLI: NiMoO<sub>4</sub>-modified MnO<sub>2</sub> hybrid nanostructures on nickel foam: electrochemical performance and supercapacitor applications

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Wei-Bin Luo, Yong-Chun Kong, Ling-Bin Ma, Xue-Jing Kang, Long
Copyright Year	2015
Abstract	A novel self-supported electrode of NiMoO4-modified MnO2 hybrid nanostructures on nickel foam has been designed and synthesized using a combination of hydrothermal syntheses. Based on the morphology, a possible mechanism that the surface modification of NiMoO4 not only prevents the MnO2 from dissolving in an alkaline electrolyte of KOH but also improves the capacity is proposed. Therefore, this electrode manifests a satisfying capacitance of 2525 F g−1 (within a potential range of −0.2–0.6 V at a current density of 0.5 A g−1), outstanding rate capability and excellent cycling stability. The reason that the hybrid NiMoO4-modified MnO2 electrode has excellent comprehensive performance is not only the coupling effect which between NiMoO4 and MnO2 but also the semiconductor surface recombination effect which improved the electrical conductivity. Moreover, an asymmetric supercapacitor has been assembled, where the hybrid NiMoO4-modified MnO2 and activated carbon act as the positive and negative electrodes, respectively, and a maximum specific capacitance of 135 F g−1 is demonstrated within a cell voltage between 0 and 1.6 V at a current density of 0.5 A g−1; thus, the supercapacitor exhibits a high energy density and stable power characteristics.
Starting Page	6207
Ending Page	6215
Page Count	9
File Format	HTM / HTML PDF
ISSN	11440546
Volume Number	39
Issue Number	8
Journal	New Journal of Chemistry
DOI	10.1039/c5nj00639b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Electrical resistivity and conductivity Semiconductor Electrode Hydrothermal circulation Electrolyte Activated carbon Carrier generation and recombination Supercapacitor Capacitance Energy density Nickel Electric current
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Catalysis

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