Transactions of Nanjing University of Aeronautics & Astronautics
Performance of HT-PEMFC Based on Improved Baffle Structure
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Abstract:
This study combines the three-dimensional model of the high-temperature proton exchange membrane fuel cell（HT-PEMFC） with theoretical analysis， by optimizing the structure of the fuel cell， adding a semicircular baffle in the gas channel and implementing novelly arranged obstacles to improve the PEMFC performance. The effects of velocity distribution， interface reactant concentration and pressure drop on performance are studied. The results show that adding obstacles in the gas channel will produce vertical velocity and can improve output performance， especially in the case of high current density and higher baffle radius. The superiority of the optimized structure in mass transfer capacity is proved， and a mechanism explanation is given for the improvement of performance.
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Project Supported:
This work was supported by the Defense Industrial Technology Development Program （No. JCKY2018605B006） and the Aviation Science Fund （No. 201928052002）.
Clc Number:
TN925
CHINA AERO-SCIENCES
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