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Preparation and characterization of new anodes based on Ti mesh for direct methanol fuel cells

Lookup NU author(s): Fujun Zhu, Professor Wen-Feng Lin, Professor Paul Christensen, Dr Honglin Zhang

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Abstract

A novel anode structure based on Ti mesh for the direct methanol fuel cell (DMFC) has been prepared by thermal deposition of ∼5 μm PtRuO2 catalyst layer on ∼50 μm Ti mesh. The preparation procedures and the main characteristics of the anode were studied by half-cell testing, scanning electron microscopy analysis, energy-dispersive X-ray measurement, and single-cell testing. The optimum calcination temperature is 450°C, calcination time is 90- 120 min, PtRuO2 catalyst loading is 5.0 mg cm-2, Pt precursor concentration range of solution is 0.14- 0.4 M, and solution aging time is 1 day. The performances of the anodes prepared using the solution kept within 20 days showed no significant difference. When it was used in DMFC feed with low-concentration methanol solution at 90°C, this new anode shows better performance than that of the conventional anode, because its thin hydrophilic structure is a benefit to the transport of methanol and carbon dioxide. However, due to its opening structure, when higher concentration methanol was employed, the performance of the cell with new anode became worse. © 2006 The Electrochemical Society. All rights reserved.


Publication metadata

Author(s): Shao Z-G, Zhu F, Lin W-F, Christensen PA, Zhang H, Yi B

Publication type: Article

Publication status: Published

Journal: Journal of the Electrochemical Society

Year: 2006

Volume: 153

Issue: 8

Pages: A1575-A1583

ISSN (print): 0013-4651

ISSN (electronic): 1945-7111

Publisher: Electrochemical Society, Inc.

URL: http://dx.doi.org/10.1149/1.2209563

DOI: 10.1149/1.2209563


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