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학술발표회초록보기

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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Study of the enhanced electrochemical properties and MAS NMR fine structure analysis of anion doped lithium vanadium borate

등록일
2018년 2월 7일 15시 13분 27초
접수번호
6615
발표코드
ANAL2.O-15 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 10시 : 17분
발표형식
구두발표
발표분야
Analytical Chemistry - Oral Presentation of Young Analytical Chemists II
저자 및
공동저자
CHAEWON Moon, YOUNGIL LEE*, Khoirul Umam1
Department of Chemistry, University of Ulsan, Korea
1Department of Chemistry, Universitas Indonesia., Korea
As a cathode material of Li-ion battery, lithium vanadium phosphate, Li3V2(PO4)3 (LVP), has a stable structure and high-voltage platform. However, LVP has low electronic conductivity and slow lithium-ion diffusion. As an alternative cathode material, Li3V2(BO3)3 (LVB) has weaker B-O bond which makes relatively fast lithium ion diffusion. Also, its theoretical reversible capacity is much larger of 268 mAh/g. Fluorine anion substituted Li3V2(BO3)2.95F0.15 has been synthesized by combustion method. Characterizations of prepared sample are investigated using by X-ray diffraction (XRD) and electrochemical measurements. Also, solid-state NMR is used to investigate its local electronic structure. The results of fluorine substituted LVB are shown improved long cycleability, rate performance, and structural stability. The best anion doping ratio in LVB is still under study with electrochemical properties.

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