01980nas a2200241   4500008004100000022001400041245013400055210006900189260000900258300001100267490000800278520113700286653001201423653003001435653002901465653001301494653001801507100002101525700002301546700002701569700002101596856012101617       2022                        eng d  a0378-775300aInterdigitated flow field impact on mass transport and electrochemical reaction in high-temperature polymer electrolyte fuel cell0 aInterdigitated flow field impact on mass transport and electroch  cJUN   a2313190 v5323 a<p>
	The enhanced performance of Polybenzimidazole (PBI) based high-temperature polymer electrolyte fuel cell (HT-PEFC) with interdigitated flow field over the other flow fields can be a consequence of higher average pressure developed on the flow field due to dead end in the channels or faster mass transport due to pressuredriven convection in the gas diffusion layer (GDL). In the present study, the effect of average pressure on the flow field and mass transport mechanism in the GDL on the HT-PEFC performance have been systematically decoupled. Three-dimensional simulation validated by experimental studies confirm that the enhanced performance in case of the interdigitated flow field is due to faster mass transport in the GDL and not due to higher average gas pressure. The simulation studies are performed on the interdigitated flow field and compared against the parallel flow field to have an insight into the effect of key operating and geometric parameters. There exists an optimum value for channel to rib ratio and current density saturates after an air stoichiometry of 4 which is validated by experiments.</p>
10aHT-PEFC10aInterdigitated flow field10aMass transport mechanism10apressure10astoichiometry1 aAgarwal, Harshal1 aThosar, Aniket, U.1 aBhat, Santoshkumar, D.1 aLele, Ashish, K.  uhttps://library.ncl.res.in/content/interdigitated-flow-field-impact-mass-transport-and-electrochemical-reaction-high