期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 18, 页码 9800-9806出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b01724
关键词
high-temperature PEFC; durability; fuel cell catalyst; nanoporous carbon; polymer wrapping
资金
- Low-Carbon Research Network (LCnet)
- Nanotechnology Platform Project (Molecules and Materials Synthesis) of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
- Japan Science and Technology Agency (JST) through its Center of Innovation Science and Technology based Radical Innovation and Entrepreneurship Program (COI Program)
- China Scholarship Council (CSC)
In this paper, we used a 3D nanoporous carbon (NanoPC) with a high specific surface area of 1037 m(2)/g as a carbon support for high-temperature polymer electrolyte fuel cell, and fabricated an electrocatalyst (NanoPC/PyPBI/Pt) having platinum nanoparticles of similar to 2.2 nm diameter deposited on the NanoPC that was wrapped by poly[2,2'-(2,6-pyridine)-5,5'-bibenzimidazole] (PyPBI). Even after 10 000 start-up/shutdown cycles in the range of 1.0 to 1.5 V vs. RHE, the NanoPC/PyPBI/Pt showed almost no loss in electrochemical surface area (ECSA), which indicated much higher durability than those of a CB/PyPBI/Pt (similar to 32% loss), in which conventional carbon black (CB) was used in place of the NanoPC, and conventional CB/Pt (similar to 46% loss). The power density of the NanoPC/PyPBI/Pt was 342 mW/cm(2), which was much higher than those of the CB/PyPBI/Pt (183 mW/cm(2)) and CB/Pt (115 mW/cm(2)).
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