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제126회 대한화학회 학술발표회 및 총회 Spherical FeOF Nanoparticles Wrapped in Graphitic Carbon Derived from Maleopimaric Acid as a Cathode Material for Sodium-Ion Batteries

등록일
2020년 9월 9일 11시 12분 25초
접수번호
0907
발표코드
ELEC.P-521 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 21일(수) 17:00~17:30
발표형식
포스터
발표분야
Electrochemistry
저자 및
공동저자
Achmad Yanuar Maulana, Jongsik Kim*
Department of Chemistry, Dong-A University, Korea
Sodium-ion batteries (SIBs) are considered one of the most promising energy storage systems for replacing lithium-ion batteries because of the high abundance and low cost of sodium. Iron oxyfluoride (FeOF) is a promising conversion-based cathode material for SIBs because of its high theoretical capacity of about 855 mAh g-1 and low-cost chemical compositions and its lower sensitivity to the size of charged carrier ions. However, the poor electrical conductivity and ion diffusion of FeOF result in a low rate capability and cyclability. In this work, FeOF nanoparticles wrapped by graphitic carbon layers were synthesized using abietic or maleopimaric acid as both the carbon source and organic ligand. In addition, the morphology of the FeOF particles was gradually controlled from rod to spherical shapes, simply depending on the rosin acids. The FeOF nanoparticles prepared with maleopimaric acid showed a large reversible discharge capacity of 356.7 mAh g-1 with a fading rate of 0.21% per cycle after 100 cycles at a current density of 100 mA g-1 and an excellent rate capability as a cathode for SIBs.

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