Abstract
As the cathode channel structure plays significant effects on the performance of the proton exchange membrane fuel cell (PEMFC), in this work, a 3D multi-phase model of PEMFC is established and effects of cathode channel structure (conventional channel, normal sinusoidal-wave fins and gradient sinusoidal-wave fins) on the performance of PEMFC are numerically investigated. Results indicate that the PEMFC with gradient sinusoidal-wave fins in cathode channel can achieve higher power density and more uniform membrane current density. This is due to that the gas velocity in cathode channel with gradient sinusoidal-wave fins is significantly increased, leading to better oxygen transport and liquid water removal. Furthermore, effects of the geometrical parameters of gradient sinusoidal-wave fins on the electricity generation performance, membrane current density, and mass fraction of oxygen and liquid water of PEMFC are analyzed and discussed. It is found that the optimum waveform depth growth rate and wavelength of the gradient sinusoidal-wave fins is 0.035 and 2.5 mm, respectively. At 0.5 V, the maximum power density of the PEMFC with gradient sinusoidal-wave fins is 5.3% higher than that of the PEMFC with conventional channel.
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.
