| 학회 |
한국공업화학회 |
| 학술대회 |
2019년 봄 (05/01 ~ 05/03, 부산 벡스코(BEXCO)) |
| 권호 |
23권 1호 |
| 발표분야 |
(산학연협력위원회) 탄소소재의 원천 및 실용화 기술개발/미래 나노기술 소재 |
| 제목 |
Cobalt Nitride and Carbon Nanofiber Composites for Oxygen Electrocatalysis |
| 초록 |
Oxygen electrocatalysis has attracted a growing attention because it is a key of various sustainable energy conversion and storage systems. However, slow kinetics of oxygen based reactions (i.e., oxygen reduction and oxygen evolution reaction (OER and OER)) are often hampering their energy efficiency due to large overpotentials for driving the proper reactions. Metal nitrides are considered as a promising electrocatalysts due to their metallic conductivity and excellent catalytic activities. Here, we report cobalt nitride (Co4N)/carbon nanofiber(CNF) hybrid as a highly efficient and cost-effective bifunctional catalysts. We figure out that electrospun CNFs containing nitrogen dopants role as a continuous charge transport channel, and the metallic Co4N nanorods grown on CNFs provide OER active sites and synergistic ORR functions. Their catalytic roles are demonstrated via DFT calculations and outstanding stabilities are confirmed in both aqueous and nonaqueous applications. |
| 저자 |
윤기로 |
| 소속 |
한국생산기술(연) |
| 키워드 |
Carbon nanofibers; Metal nitrides; Electrocatalysts; ORR; OER
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| E-Mail |
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