Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7713391 | International Journal of Hydrogen Energy | 2015 | 9 Pages |
Abstract
Nanocrystalline cobalt molybdate (CoMoO4) nanoflakes were grown directly on carbon fibre cloth (CFC) via a simple hydrothermal method without any template or surfactant. A symmetric supercapacitor was fabricated using CoMoO4 nanoflakes/CFC as both negative and positive electrodes. The device has delivered the maximum specific capacitance of 8.3 F gâ1 at a constant current density of 1 A gâ1 in organic electrolyte. It offers the reasonable energy (2.6 Wh kgâ1) and power density (748.8 W kgâ1) as comparable to the carbon based symmetric supercapacitors. As a catalyst for methanol oxidation, the CoMoO4 nanoflakes showed high current density (25 mA cmâ2) and low onset potential (0.38 V). The impressive bi-functional electrochemical activity of CoMoO4 on CFC is mainly attributed to its porous microstructure, where reasonable electrical conductivity resulted from binder-free and intimate metal oxide/substrate integration.
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Authors
N. Padmanathan, Han Shao, S. Selladurai, Colm Glynn, Colm O'Dwyer, Kafil M. Razeeb,