Abstract
In this work, an ex situ accelerated carbon-corrosion-based ageing methodology is presented for stand-alone gas diffusion layers (GDLs). Pristine GDLs were subjected to carbon corrosion (degradation) via submersion in a hydrogen peroxide (H2O2) solution. The microporous layer (MPL) experiences up to nine times the loss in carbon mass compared to the carbon fiber substrate. The hydrophobicity of the GDL is also degraded as evidenced by a reduction in the surface contact angle, and this loss of hydrophobicity is associated with surface corrosion and polytetrafluoroethylene (PTFE) degradation. Performance testing reveals increases in mass transport losses for aged GDLs, which is a phenomenon that is attributed to the reduction in GDL hydrophobicity.
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.
