Morphology Controlled Growth of Meso-Porous Co3O4Nanostructures and Study of Their Electrochemical Capacitive Behavior | Zendy

Anirudha Jena | Zendy; N. Munichandraiah | Zendy; S. A. Shivashankar | Zendy

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Morphology Controlled Growth of Meso-Porous Co₃O₄Nanostructures and Study of Their Electrochemical Capacitive Behavior

Author(s) -

Anirudha Jena,

N. Munichandraiah,

S. A. Shivashankar

Publication year - 2012

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/2.002210jes

Subject(s) - porosity , materials science , nanocrystalline material , electrochemistry , electrolyte , annealing (glass) , chemical engineering , oxide , microstructure , electrode , capacitance , cobalt oxide , composite material , nanotechnology , chemistry , metallurgy , engineering

The morphology of nanocrystalline Co3O4 synthesized through microwave irradiation of a solution of a cobalt complex is found to depend reproducibly on the conditions of synthesis and, in particular, on the composition of the solvent used. Despite the rapidity of the process, oriented aggregation occurs under certain conditions, depending on solvent composition. Annealing the oriented samples leads to microstructures with significant porosity, rendering the material suitable as electrodes for electrochemical capacitors. Electrochemical analysis of the oxide samples was carried out in 0.1M Na2SO4 electrolyte vs. Ag/AgCl electrode. A stable specific capacitance of 221 F/g was measured for a meso-porous sample displaying oriented aggregation. Stability of these oxide materials were checked for longer charge-discharge cycling. (C) 2012 The Electrochemical Society. DOI: 10.1149/2.002210jes] All rights reserved

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