Performance improvement in a proton exchange membrane fuel cell with an innovative flow field design

The flow field of the proton exchange membrane fuel cell (PEMFC) controls mass and water transfer; it significantly impacts cell's performance. It is critical to innovate design for optimizing This paper proposes a new-designed (NDFF) patterned with built-in blockage trap-shape rib association. novel was analyzed numerically experimentally. A three-dimensional isothermal numerical model first established based on COMSOL software. demonstrated that NDFF transformed traditional diffusion transfer into optimized convection combination. Compared conventional straight field, effective coefficient considerably improved. Moreover, structures enforced cyclical variation local velocity pressure, forming forced-convection, which beneficial management. At 0.45A·cm?2, steady-state voltage initial dynamic response were increased by 0.08 V 0.16 V; power density 20.1%. experimental results collected validate enhanced performance PEMFC NDFF. Energy efficiency ratio (EER) proposed as an evaluation criterion; EER suggested can improve net output power. Highlights new trap shape association ratio, used Steady-state performances are greatly improved at