1. Influence of Current Collector Design and Combination on the Performance of Passive Direct Methanol Fuel Cells.
- Author
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Yu, Weibin, Xiao, Zhiyuan, Zhang, Weiqi, Ma, Qiang, Li, Zhuo, Yan, Xiaohui, Su, Huaneng, Xing, Lei, and Xu, Qian
- Subjects
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DIRECT methanol fuel cells , *POWER density , *FUEL cells , *CATHODES , *FUEL costs , *ANODES , *METHANOL as fuel - Abstract
In this work, an anode current collector with a scaled step-hole structure (called SF-type) and a cathode current collector with a perforated cross-tilt structure (called X-type) were designed and fabricated for application in passive direct methanol fuel cells (DMFCs). A whole-cell test showed that the combination of an anode SF-type current collector and cathode conventional current collector increased the optimal methanol concentration from 6 M to 8 M and the maximum power density to 5.40 mW cm−2, which improved the cell performance by 51.6% compared to that of the conventional design under ambient testing conditions. The combination of the anode conventional current collector and cathode X-type current collector achieved a maximum power density of 5.65 mW cm−2 with a 58.7% performance improvement, while the optimal methanol concentration was increased to 10 M. Furthermore, the combination of anode SF-type and cathode X-type obtained the highest power density at 6.22 mW cm−2. Notably, the anode and cathode catalyst loadings used in this study were 2.0 mg cm−2, which is lower than the commonly used loading, thus reducing the fuel cell cost. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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