| Autor: |
Liu, Huize, Hu, Zunyan, Li, Jianqiu, Xu, Liangfei, Zhao, Yang, Ding, Yujie, Ouyang, Minggao |
| Předmět: |
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| Zdroj: |
International Journal of Energy Research; 6/25/2022, Vol. 46 Issue 8, p10998-11010, 13p |
| Abstrakt: |
Summary: Reducing the channel/rib width is a possible approach to improve the performance of fuel cells. However, few experiments were conducted to verify this claim, especially for channel/rib width of below 0.4 mm. In this study, we conducted quantitative analysis to investigate the influence of channel/rib geometries on the performance of fuel cells through experiments and model simulations. As the channel/rib width reduced from 1.0 to 0.2 mm, the fuel cell power density increased by 31% under high humidity condition. The influence of channel/rib width on overpotentials has also been revealed. Notably, narrow channels/ribs can lead to a significant reduction in mass transfer loss under high current density. Three‐dimensional simulation results suggest that the reduction of channel/rib width improves the uniformity of gas and water distribution under channels and ribs by 95%. This research provides a concrete foundation for the design of bipolar plates with high‐density flow channels for high‐power density fuel cells. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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