Abstract
This research was carried out to prepare high performance membrane-electrode assembly for proton exchange membrane fuel cell at low humidity condition. It had investigated the effect of the Nafion ®/PTFE proton exchange membrane, impregnating porous PTFE membrane with Nafion ® solution, in the gas diffusion medium and microporous layer on the cell performance under various humidity conditions. The Nafion ®/PTFE decreases the back diffusion distance of product water from cathode to anode side at low humidity condition, caused by the property of high tensile strength. It is found that the optimum PTFE content is 40 wt% of the gas diffusion medium and 30 wt% of the microporous layer at low humidity condition, respectively. The optimum PTFE treatment in the two layers can facilitate the reactant gas and the back diffusion of product water from cathode side to anode side to provide sufficient proton conductivity of membrane. The highest current density was 955 mA/cm 2 occurred at the cell potential of 0.6 V.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Journal of the Taiwan Institute of Chemical Engineers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.