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학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

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

제124회 대한화학회 학술발표회, 총회 및 기기전시회 안내 High Performance Aqueous Zinc Ion Batteries Mediated via Hydrated Intercalation

등록일
2019년 8월 21일 16시 40분 42초
접수번호
0770
발표코드
ELEC.P-409 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 17일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Electrochemistry
저자 및
공동저자
Jaeho Shin, Jang Wook Choi*
Chemical and Biological Engineering, Seoul National University, Korea

Aqueous zinc ion batteries (AZIBs), composed of a zinc (Zn) metal anode paired with a metal oxide cathode, are promising candidates for post lithium ion batteries. The bivalence of Zn opens up possibilities for multi-electron redox, which has spurred a fierce search for suitable cathode materials (namely metal oxides) that intercalate Zn2+ ions. Despite the recent rise in publications, however, little is known about the intercalation dynamics of Zn2+ ions. As such, there is much room to explore the interaction between these ions and their host cathode. In this respect, we focus on a type of vanadium oxide, V6O13, not only as an electrochemically promising material, but also as a platform with which key Zn2+ intercalation parameters can be elucidated. Electrochemical results are correlated with a series of synchrotron XAFS/XRD studies along with DFT calculations to understand the underlying reaction mechanisms. Interestingly, we find that 'hydrated intercalation' is crucial to facilitating Zn2+ intercalation kinetics. In this presentation, I will correlate the electrochemical properties with the structural changes of the cathode and explain how water comes into play during this process.


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