Abstract
A free-breathing polymer electrolyte membrane fuel cell (PEMFC), whose oxidant is fed by natural convection from ambient air, is considered as one of small and portable power sources. In this study, the performance limit without gas humidification and the factors affecting performance of the free-breathing PEMFC were investigated. The cell voltage of normal PEMFC without gas humidification is approximate equivalent of that with gas humidification under low current density conditions, less than 0.1 A/cm^2. For the performance of the free-breathing PEMFC at the low current density, the contact resistance loss between separator and gas diffusion layer is dominant factor and the separator structure for decreasing the contact resistance is needed to improve performance.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
