| Research on the Effect of Refined Flow Channel in Bionic Flow Channel on PEMFC Performance |
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Zongxi Zhang, Zhike Sui, Xingru Liu, Xiang Fan |
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School of Mechanical and Electronic Engineering, Shandong Jianzhu University, Jinan 250101, China |
Correspondence:
Zongxi Zhang, Tel: +86-0531-86361369,
Email: zhangzongxi18@sdjzu.edu.cn
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Received: 14 June 2024 • Accepted: 12 December 2024 |
| Abstract |
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Previous researches have shown that the modification of the flow channel structure in PEMFC significantly impact reactant distribution and the overall performance of the fuel cell. During this research, the biomimetic leaf veininspired flow channel (BIFC), inspired by Ginkgo biloba leaf veins, was designed to optimize electrochemical reactions in PEMFC. Different number and arrangement of refinement channels between tributary channels based on various configurations of BIFC using three-dimensional numerical simulations with COMSOL Multiphysics. BIFC-6, with staggered arrangement of three refinement channel tiers, surpassed traditional approaches, showing low pressure drops, consistent distribution of reactants, and increased power output. Notably, BI-6 achieved the peak power density of 0.58 W/cm2, 38.8% higher than that of CPFC and 9.4% higher than that of the original bionic flow channel. The research was also aimed at refining the width of the channel and comparing the output performance of the fuel cell with different widths. The results showed that Type-5 achieved the peak power density of 0.612W/cm2, which was 15.5% improvement compared with BI-0. These findings highlight the impact of rationally designing refined flow channels to enhance fuel cell output performance. |
| Keywords:
PEMFC, Refinement of channel, Polarization curve, Mass transfer, Drainage performance |
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