Higher temperature or tolerant GDE? Novel strategy for increasing tolerance to CO in HT-PEMFC

The platinum nanoparticles were grown directly by electrodeposition process on electrochemically oxidized carbon paper (CP) and non-oxidized CP as the anode gas diffusion electrodes (GDEs) for the application in ABPBI-based high-temperature polymer. Results show that cathodic oxidation of CP has an effect on the CO tolerance of the anode GDE. This enhancement appears to originate from the functional oxygen groups on oxidized CP. It was also found that poisoning by ۳% CO for oxidized cell at ۱۴۰ °C and ۱۶۰°C display an enhancement in the performance compared with non-oxidized electrode. The lowest power change in the presence of CO is ۲۴% belong to oxidized cell at ۱۶۰°C Interestingly, performance of the oxidized fuel cell at ۱۴۰°C has a similar resistance to carbon monoxide for non-oxidized electrode at ۱۶۰ °C, which compensates for the increase in temperature