| 학회 |
한국재료학회 |
| 학술대회 |
2016년 가을 (11/16 ~ 11/18, 경주 현대호텔) |
| 권호 |
22권 2호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Cobalt Nitride Anchored Nitrogen-doped Carbon Nanofibers as Catalyst-Current Collector Integrated Air Cathode for Lithium-Oxygen Batteries |
| 초록 |
Rechargeable lithium-oxygen (Li-O2) battery has attracted huge attention as one of large scale energy storage systems due to its high energy density and eco-friends. However, the Li-O2 cells are still suffer from the large loss of voltages induced by poor catalytic properties and low electronic conductivity of electrode materials. Metal nitrides are a class of compounds with metallic conductivity and excellent catalytic activities, considered as one of the promising and low-cost electrocatalysts in a variety of applications. Here we present the Li-O2 battery using a metallic cobalt nitride (Co4N) nanorod grown nitrogen-doped carbon nanofibers (CNFs) network as a binder-free and ultra-light air cathode. The Co4N/CNF based air cathode features excellent electrochemical performance and superior stability in Li-O2 cells by the aid of polyacrylonitrile (PAN) driven electrospun CNFs which have continuous electrical channels with high strength and numerous reaction sites, and self-limiting and reactive oxidized shells on the surface of Co4N grains. |
| 저자 |
윤기로, 조수호, 김찬훈, 정지원, 김일두
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| 소속 |
한국과학기술원(KAIST) |
| 키워드 |
cobalt nitrides; carbon nanofibers; catalysts; Li-O<SUB>2</SUB> batteries; electrospinning
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| E-Mail |
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