Issue 3, 2012

Electrochemical growth of gold nanostructures on carbon paper for alkaline direct glucosefuel cell

Abstract

Au nanocorals and nanoparticles were grown on carbon papers via a simple two-electrode electrochemical deposition process by reducing HAuCl4 under constant potentials in mixtures containing cetyltrimethylammonium chloride (CTAC) and/or NaNO3. Electrochemical characterizations showed that the nanocoral electrode exhibited high surface area and high electrocatalytic activity towards glucose oxidation in alkaline media. These Au nanostructures were employed as anodes and assembled with anion exchange membranes and Pt cathodes for alkaline direct glucose fuel cell (DGFC) investigations. Open-circuit voltages (OCVs) of the Au nanocoral and nanoparticle electrodes were 0.64 V and 0.61 V, and their maximum power densities were 0.847 mW cm−2 and 0.336 mW cm−2, respectively. The cells showed stable output over 5 h with a small decrease in OCV (6.9%). The electrodes could be refreshed after electrochemical reduction steps.

Graphical abstract: Electrochemical growth of gold nanostructures on carbon paper for alkaline direct glucose fuel cell

Supplementary files

Article information

Article type
Paper
Submitted
18 Aug 2011
Accepted
14 Oct 2011
First published
05 Dec 2011

RSC Adv., 2012,2, 1068-1073

Electrochemical growth of gold nanostructures on carbon paper for alkaline direct glucose fuel cell

S. Tung, T. Huang, C. Lee and H. Chiu, RSC Adv., 2012, 2, 1068 DOI: 10.1039/C1RA00611H

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