| 학회 |
한국재료학회 |
| 학술대회 |
2016년 가을 (11/16 ~ 11/18, 경주 현대호텔) |
| 권호 |
22권 2호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Cobalt-Functionalized Carbon Nanotubes/Carbon Nanofibers Hybrid Catalysts for Efficient Oxygen Electrocatalysis |
| 초록 |
Oxygen based electrocatalysis has attracted a growing attention from researchers because it is a heart of various sustainable energy conversion and storage systems, such as water splitting, fuel cells, and metal-air batteries. However, slow kinetics of oxygen based reactions (i.e., oxygen reduction reaction (ORR) and oxygen evolution reaction (OER)) are often hampering their energy efficiency due to large overpotentials for driving the proper reactions. Here we report cobalt functionalized carbon nanotube(CNT)/carbon nanofiber(CNF) hybrid as a highly efficient and cost-effective bifunctional electrocatalyst for ORR/OER. In brief, nitrogen-doped CNT and CNF composites achieved from the pyrolysis of polyacrylonitrile (PAN) driven electrospun fibers and subsequent chemical vapor deposition (CVD) process deliver excellent activity toward ORR, and cobalt nanoparticles encapsulated in graphitic carbon shells facilitate OER kinetics without significant degradation during repeatable operation. |
| 저자 |
윤기로1, 최진호2, 이길용1, 조수호1, 김찬훈1, 김일두1
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| 소속 |
1한국과학기술원(KAIST), 2한국과학영재학교 |
| 키워드 |
cobalt nanoparticles; carbon nanofibers; carbon nanotubes; electrocatalysts; electrospinning
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| E-Mail |
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