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  • 09월 10일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Metal-Free Heteroatom (B, N)-doped Carbon as Bi-functional oxygen catalyst for Zinc-Air Battery

2019년 9월 9일 14시 57분 40초
ELEC.P-444 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 17일 (목요일) 11:00~12:30
저자 및
Seonghee Kim, Oi Lun Helena Li1,*, Jihun Kim2, Jihun Kim2
Material Science and Engineering, Pusan National University, Korea
1School of Materials Science and Engineering, Pusan National University, Korea
2Pusan National University, Korea

Rechargeable zinc-air battery is one of the powerful candidates for future energy storage system due to its simple structure, safe application, and high theoretical specific capacity. However, due to its high cost and low durability of commercial noble metal catalyst, the zinc-air battery is still not in wide application to various fields. For this reason, many noble metal-free catalysts, such as Heteroatom-doped carbon is attracting much attention by its economical aspect and competitable catalytic performance. When dopant is added to the carbon matrix, electrochemical catalytic performance is increased due to the activity sites induced from different electronegativity between dopant and carbon. However, since each dopant affects different to catalytic performances, it is important to discover the effect of each dopant and synergetic effect between each dopant. So, in this study, we applied plasma bottom-up synthesis as a simple and fast carbon-based heteroatom-doped catalyst. Quinoline (C9H7N) as the nitrogen(N) dopant precursor and boric acid(H3BO3) as the Boron(B) dopant precursor was applied. Further, to investigate synergetic effect of boron and nitrogen, boric acid was applied 1mM to 10mM to nitrogen precursor. In the electrochemical analysis, 10mM B-N doped Carbon showed best ORR onset potential (0.86V vs. RHE), which is higher than that of 1mM B-N doped Carbon and 5mM B-N doped carbon (Figure 1). Also, to applying rechargeable Zn-Air battery system, OER performance is investigated and as a result, 10mM B-N doped carbon showed highest OER performance (1.5V vs. RHE, Figure 2). Based on the results, we can suggest that synergetic effect of Boron and Nitrogen can be used for the new approach to replace noble metal-based