期刊
SUSTAINABLE ENERGY & FUELS
卷 3, 期 4, 页码 1012-1023出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8se00520f
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- CSIR
Mesoporous carbon (MC) synthesized from spent mushroom compost is realized as a durable support for Pt to efficiently enhance the oxygen reduction reaction in polymer electrolyte fuel cells. The spent mushroom compost heat-treated at 800 degrees C to form mesoporous carbon (MC-800) shows a higher BET surface area of 690 m(2) g(-1) compared to other MC. Pt impregnated on MC-800 shows superior electrochemical surface area and oxygen reduction activity in comparison with Pt/C. In addition, during the durability test carried out between 0.6 and 1.2 V, the MC-800 supported Pt electrocatalyst exhibits the ORR activity with higher limiting current and 20 mV positive onset potential shift in comparison with Pt/C, even after 10000 potential cycles. Further, the fuel cell assembly comprising thin metal loading (150 g cm(-2)) of Pt/MC-800 electrocatalyst as the cathode delivers superior peak power density and retains more than 40% of the initial cell performance as compared to Pt/C, even under stringent durability test conditions between 1 and 1.6 V vs. DHE.
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