| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-정밀화학 |
| 제목 |
Covalent Organic Framework-based Electrocatalysts for Promotion of ORR and OER in Zn-Air Batteries |
| 초록 |
We developed a cobalt nanoparticle immobilized pyridine-linked covalent organic framework (CoNP-pyCOF) to enhance oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in Zn-air batteries. CoNP-pyCOF exhibited a hierarchical porous structure with well-defined active sites and micro/mesopores. Incorporation of cobalt nanoparticles (CoNP) provoked a change in its electronic structure, lowing the p-band center via charge transfer. The prepared CoNP-pyCOF showed high electrocatalytic activities for ORR and OER and also had superior stability as compared to Pt/C or RuO2 electrocatalysts. Theoretical calculations revealed that the carbon atoms in the pyridinic moiety were the active sites for both ORR and OER. Furthermore, a Zn-Air battery composed of CoNP-pyCOF had comparable charge-discharge performance and better stability than that of Pt/C and RuO2 electrocatalysts. |
| 저자 |
박정현, 이치호, 주종민, 이준형, 설재훈, 이상욱, 김종호
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| 소속 |
한양대 |
| 키워드 |
Covalent organic framework; p-Band modulation; bifunctional oxygen electrocatalyst; Zn-Air battery
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| E-Mail |
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