Abstract
The liquid water generated controls a performance of Polymer Electrolyte Fuel Cell (PEFC) by preventing the drying of polymer electrolyte, but on the other hand the liquid water can hinder transport of the reactant species by blocking the pores in the porous gas diffusion layer. In order to clarify the behavior of liquid water generated in the cathode of PEFC, a single cell image measurement model has been designed. Image measurement clears the three points below. (1) The effectiveness of 3-serpentine channel, has the merit of serpentine and parallel, is judged. (2) The effectiveness of a new channel, has the WAL (Water Absorption Layer) and waste channel, is confirmed. (3) We propose the installation angle of the cell for efficient drainage of the condensate in the cathode channel. The results show that 3-serpentine channel and WAL are verified.
