期刊
ACS APPLIED MATERIALS & INTERFACES
卷 6, 期 9, 页码 6340-6345出版社
AMER CHEMICAL SOC
DOI: 10.1021/am405618m
关键词
silicon-based anode; silicon nanowire; silicon oxide; core/shell nanowire; lithium-ion battery; rate capability
资金
- Center for Advanced Soft Electronics under the Global Frontier Research Program through the National Research Foundation - Ministry of Science, ICT, and Future Planning [2011-0031630]
- BK21 Plus program (META-material-based Energy Harvest and Storage Technologies) - Ministry of Education, Korea [10Z20130011057]
Si-SiOx core-shell nanowires (NWs) ranging from 10 to 30 nm in diameter are prepared by a simple evaporation of silicon monoxide and control of substrate temperatures without any catalyst. The Si-SiOx NWs grown at 735 and 955 degrees C are strongly anchored to the Cu current collector by forming copper silicide at the interface between Si and Cu, and subsequently used as anodes in lithium-ion batteries, in which no binder or conducting materials are used. The Si-SiOx NWs anodes show excellent electrochemical performances in terms of capacity retention and rate capability. In particular, the Si-SiOx NW anode grown at 955 degrees C shows a reversible capacity of similar to 1000 mAh g(-1) even at a high-rate of 50 C. This catalyst-free synthetic route of Si-SiOx NWs that are strongly anchored to the Cu current collector opens up an effective process for fabricating other high-capacity anodes in lithiumion batteries (LIBs).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据