Abstract
The biggest issue in the fuel cell, which is believed to be the promising candidate as the next generation power source, is the oxygen reduction reaction (ORR). Due to the relatively high ORR activity, Pt-based catalysts are used predominantly, however, the scarcity, high cost and unsatisfactory durability of Pt make it difficult for commercialization of fuel cell. In this work, we developed a heteroatom doped carbon supported Co2P catalyst through the eco-friendly and simple method using bean sprouts. Final product exhibits excellent ORR activity and superior durability in alkaline media. The value of the half wave potential of NBSCo is 10 mV higher than that of commercial Pt/C. The excellent oxygen reduction activity is attributed to the synergistic effect of Co2P and N-doped carbon. NBSCo was applied in anion exchange membrane fuel cell (AEMFCs). At the optimized cathode composition, the NBSCo produce the max power density of 172 mW cm-2. It is considered to be competitive performance and it has demonstrated the potential for application to energy storage systems.
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