Evaluating the Gas Distribution Quality of PEMFC in Dynamic Response: Severe Condition of Delayed Gas Supply.

Abstract The short service life of vehicle fuel cell is a key issue that restricts its commercialization. It has been found that the lack of gas supply due to frequent load changes and start-stops is a very crucial factor in fuel cell life decay. It is impossible to provide sufficient air supply in advance during the dynamic load change process due to the limitation of the response speed of air compressor. Insufficient reactant gas due to gas delayed supply causes gas starvation. In this paper, the delay supply of the fuel cell cathode reactant gas under different working conditions will be simulated, and the distribution quality will be evaluated by the gas starvation area, gas distribution variance and range, which will contribute to the design and verification of the gas intake control strategy and the diagnosis of gas starvation. [ABSTRACT FROM AUTHOR]