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

제126회 대한화학회 학술발표회 및 총회 Synthesis, Properties and Electrochemical Characteristics of SiNPs/CNT/rGO Composite films for Anode Material of Li ion Batteries.

2020년 9월 16일 15시 32분 11초
ANAL.P-291 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 21일(수) 17:30~18:00
Analytical Chemistry
저자 및
Eunhee Noh, Ruye Cong, Jin-Yeong Choi, Yura Hyun, Chang-Seop Lee*
Department of Chemistry, Keimyung University, Korea
We have synthesized Silicon nanoparticles(SiNPs)/Carbon nanotubes(CNT)/reduced Graphene Oxide(rGO) composite films by facile dispersing technique and physical filtration and applied these composite films as a high performance anode material for self-supporting, binder-free Li ion batteries. The silicon nanoparticles were uniformly coated with thermally reduced graphene oxide and carbon nanotubes are wound round the surface of the graphene-coated silicon nanoparticles. Reduced graphene oxide provides matrix with enough void space to accommodate the volume changes of SiNPs upon lithiation/delithiation and simultaneously improve electron conductivity. Carbon nanotubes can also help maintain structural stability and prevent detachment of silicon nanoparticles from the electrodes. The thickness of composite films was controlled to 20ml, 25ml, 30ml respectively and electrochemical performances were compared each other. We have then characterized these composite films by scanning electron microscope, X-ray diffraction, transmission electron microscope, X-ray photoelectron spectroscopy, thermogravimetric analysis, and investigated the electrochemical properties by galvanostatic charge-discharge. The SiNPs/CNT/rGO composite film electrode exhibited a better specific capacity and cycle stability than the rGO/SiNPs composite film electrode.