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3725836 
Journal Article 
Electrodeposition of hierarchical manganese oxide on metal nanoparticles decorated nanoporous gold with enhanced supercapacitor performance 
Zeng, Z; Zhou, H; Long, X; Guo, E; Wang, X 
2015 
Yes 
Journal of Alloys and Compounds
ISSN: 0925-8388 
632 
376-385 
WOS:000350388900056 
A novel three dimensional nanoarchitecture of manganese oxide nanosheets/Pt@nanoporous gold (MnOx/Pt@NPG) was designed and synthesized by galvanostatic electrodepositon for supercapacitors application. Nanoporous gold (NPG) membrane was fabricated by a dealloying method as a current collector and discontinuous platinum nanoparticles were pulse electrodeposited on NPG. The morphology and chemical composition of the MnOx/Pt@NPG products were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical properties of the as-prepared MnOx as an electrode material for supercapacitor were investigated by cyclic voltammetry, galvanostatic charge/discharge and electrochemical impedance spectroscopy measurements in 1 M Na2SO4 electrolyte. Importantly, the optimized MnOx/Pt@NPG hybrid electrodes obtain a maximum specific capacitance of 775 F g(-1) at 1 A g(-1) (about two times larger than that of MnOx/NPG electrodes with 404 F g(-1)), about half of the internal resistance of MnOx/NPG electrodes and excellent cycling stability, making it a promising candidate for supercapacitors. (C) 2015 Elsevier B.V. All rights reserved. 
Supercapacitor; Galvonostatic electrodepositon; Nanoporous gold; Pt; Nanosheets