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High efficient μ-PEMFCs by integrating micro/nano scaled performance improving components

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5 Author(s)
Hsien-Chih Peng ; Nat. Tsing Hua Univ., Hsinchu, Taiwan ; Chung-Nan Wang ; Yu-Chuan Su ; Tsung-Kuang Yeh
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A silicon-based and fully integrated micro-proton exchange membrane fuel cell (μ-PEMFC) which carries out high efficient catalyst utilization and outstanding cell performance is introduced in this paper. The novel design involves the integration of micro- and nano-structures that leads to higher reaction rate due to larger surface areas, reduced impedance of fuel diffusion due to micro-patterned reaction chamber that creates extra three-phase zones, and improved interfacial strength and reduced ohmic impedance due to micro-interlocks of a single cell. The best performance in the current study is 26 mW/cm2 with only 0.69 mg/cm2 of Pt catalyst, and it is superior to the present micro-fuel cells after normalizing Pt loading.

Published in:

Micro Electro Mechanical Systems (MEMS), 2012 IEEE 25th International Conference on

Date of Conference:

Jan. 29 2012-Feb. 2 2012

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