A Silicon Micro Direct Methanol Fuel Cell Demonstrator Using Microfabrication Techniques

Abstract:

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. This paper presents the design, microfabrication and characterizations of a silicon based, single-cell μDMFC demonstrator for micro/portable electrical power applications. The flow field plates of the fuel cell were made on 2“silicon wafers utilizing wet-etching and sputtering techniques. The fuel cell was assembled in an epoxy-based packaging process. Results show that a lower internal ohmic resistance of the fuel cell can be achieved with a thicker current collecting layer (CCL). Influence of the operating conditions on the μDMFC performance was also investigated. It was found that 2M methanol can yield a better fuel cell performance because it provided a better compromise between the methanol crossover and mass transportation during operation. On the other hand, a 4-time increase of the peak power density of the fuel cell was achieved by increasing the methanol temperature from 20°C to 80°C.

Info:

Periodical:

Materials Science Forum (Volumes 628-629)

Edited by:

Dongming Guo, Jun Wang, Zhenyuan Jia, Renke Kang, Hang Gao, and Xuyue Wang

Pages:

423-428

DOI:

10.4028/www.scientific.net/MSF.628-629.423

Citation:

J. S. Liang et al., "A Silicon Micro Direct Methanol Fuel Cell Demonstrator Using Microfabrication Techniques", Materials Science Forum, Vols. 628-629, pp. 423-428, 2009

Online since:

August 2009

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Price:

$35.00

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