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A direct glucose alkaline fuel cell using MnO₂–carbon nanocomposite supported gold catalyst for anode glucose oxidation

Lookup NU author(s): Dr Lei Li, Emeritus Professor Keith Scott, Professor Eileen Yu

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Abstract

Gold nanoparticles supported on MnO2–carbon nanocomposite (Au/MnO2–C) are synthesised as the catalyst for the anodic oxidation of glucose for use in a direct glucose alkaline fuel cell (DGAFC). Characterisation of the catalyst is carried out using physical and electrochemical methods. It is observed that gold nanoparticles are uniformly dispersed onto the MnO2–carbon nanocomposite support. Cyclic voltammetry shows that the prepared Au/MnO2–carbon catalysts exhibit higher electro–catalytic activity for glucose oxidation than that of commercial Pt/C and Au/C catalysts. A maximum power density, at 30 °C, of 1.1 mW cm−2 is obtained using an Au/MnO2–C anode catalyst in DGAFC, which is higher than that of the commercial Au/C catalyst. The enhanced activity is attributed to a catalytic effect of MnO2 towards glucose oxidation. MnO2–C nanocomposite is a promising approach for reducing noble metal catalyst loading in addition to improving the catalytic activity of gold catalyst for glucose oxidation.

Publication metadata

Author(s): Li L, Scott K, Yu EH

Publication type: Article

Publication status: Published

Journal: Journal of Power Sources

Year: 2013

Volume: 221

Pages: 1-5

Print publication date: 01/01/2013

ISSN (print): 0378-7753

ISSN (electronic): 1873-2755

Publisher: Elsevier SA

URL: http://dx.doi.org/10.1016/j.jpowsour.2012.08.021

DOI: 10.1016/j.jpowsour.2012.08.021

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