Electro-thermal mapping of polymer electrolyte membrane fuel cells with a fractal flow-field

Electro-thermal maps of a polymer electrolyte membrane fuel cell (PEMFC) show the spatial distribution current density and temperature, which is useful to evaluate their performance. Here, electro-thermal mapping carried out for first time on PEMFC with fractal cathode flow-field, design emulates efficient, scalable air transport inside lungs. Such are compared those conventional single-serpentine flow-field PEMFC. Each cell’s performance characterised by analysing surface temperature at different reactant relative humidity (RH) voltage. Relationships shown between segment densities temperatures, operating conditions. The cells deliver better electrochemical exhibit more homogeneous distributions in non-uniform due flooding. temperatures higher than consistent observed performances. In addition, impedance spectroscopy characterisation indicates flooding cells, but not cells.