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학술지 Direct Hybridization of Tin Oxide/Graphene Nanocomposites for Highly Efficient Lithium-Ion Battery Anodes
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저자
신동옥, 박헌, 이영기, 김광만, 한태희
발행일
201408
출처
Journal of Electroceramics, v.33 no.3-4, pp.195-201
ISSN
1385-3449
출판사
Springer
DOI
https://dx.doi.org/10.1007/s10832-014-9947-8
협약과제
13VB4800, 중대형 전고체 리튬이차전지용 유무기 하이브리드 고체전해질, 이영기
초록
A facile direct hybridization route to prepare SnO2/graphene nanocomposites for Li-ion battery anode application is demonstrated. Uniform distribution of SnO2 nanoparticles on graphene layers was enabled by a one-step chemical synthetic route. The optimal content ratio of SnO2 and graphene was determined from microscopic observations and electrochemical studies. The nanocomposite anode with SnO2 loading level of around 70 wt.% retained reversible capacity of 643.6혻mAh/g after 50혻cycles and high discharge capacity of 347.8혻mAh/g at a current density of 3000혻mA/g, which was superior to that of graphene-only electrodes or nanocomposites with overloaded SnO2 nanoparticles. Taking advantage of nano-sized SnO2 and an electrically conductive and mechanically flexible graphene layer, SnO2/graphene nanocomposites with optimized SnO2 content exhibit excellent electrochemical properties as lithium-ion battery anodes. Our strategy offers a straightforward and high-throughput pathway for creating and directing graphene-based functional hybrids through simple mixing and thermal treatments, and may be used to assemble high-performance Li-ion batteries.
키워드
Direct hybridization, Electrochemical properties, Graphene, Nanocomposite anode material, SnO nanoparticle 2
KSP 제안 키워드
Electrically conductive, Electrochemical studies, Graphene layer, High discharge capacity, High performance, High throughput(HTP), Li-ion battery anode, Microscopic observation, Nanocomposite anode, One-step, Reversible capacity