Abstract
It is known that the mass transfer characteristics of gas diffusion layers (GDLs) are closely related to cell performance in PEFCs. In this study, a method for measuring oxygen diffusivity in microporous media by means of an oxygen sensor based on a galvanic cell has been developed. This method is expected to be useful for measuring oxygen diffusivity in microporous media in a wet condition. Oxygen diffusivity in two kinds of microporous GDL media was evaluated. Experimental results indicate that diffusivity in microporous media cannot be determined on the basis of porosity alone, but that it may be influenced by some other factor, such as tortuosity. Additionally, there are some GDL materials that exhibit anisotropic diffusivity.
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.
