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  • 09월 20일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제126회 대한화학회 학술발표회 및 총회 Synthesis and Electrochemical Properties of Sulfate-based Yavapaiite-like Structure for Promising Polyanionic Cathode Material

2020년 9월 3일 16시 33분 05초
ANAL1.O-10 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
화 09시 : 36분
Analytical Chemistry - Oral Presentation of Young Analytical Chemists I
저자 및
Reyhan Puji Putranto, Youngil Lee*
Department of Chemistry, University of Ulsan, Korea
Domination of lithium-ion batteries (LIBs) have become sophisticated for electrical energy storage technology. However, depending on their applications, development of new electrode materials for LIBs especially with polyanionic compound needs to fulfill aspects such as high gravimetric and volumetric energy density, low-cost, charge/discharge rate, safety issues, and term of sustainability. Despite of LiFePO4 as well-known cathode material, Li2V2(SO4)3 and Li2VO(SO4)2 are shown good evidence of inductive effect for polyanionic material such as borate, phosphate, and silicate. In this study, novel lithium vanadium sulfate-based polyanionic cathode material via low temperature eco-efficient solution method has been developed. Electrochemical reversibility of active material has been conducted by 2016-coin cell with range of operating voltage 3.0 V – 4.8 V. X-ray diffraction pattern and infrared spectra support structural characterization of the material. Electrochemical performance of the first discharge has been obtained 36.45 mAh/g with C/20 rate. High potential of 3.85 V to extract Li-ion and charge voltage of 4.3 V for re-insertion process have been used.