期刊
ADVANCED MATERIALS
卷 30, 期 25, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201707430
关键词
bubble film; Li-ion batteries; SiOx@graphene; ultrastable anode
类别
资金
- Basic Science Center Project of the National Natural Science Foundation of China (NSFC) [51788104]
- National Key R&D Program of China [2016YFB0100100]
- NSFC [21773264, 51772301]
- Strategic Priority Research Program of the Chinese Academy of Sciences (CAS) [XDA09010100]
SiOx is proposed as one of the most promising anodes for Li-ion batteries (LIBs) for its advantageous capacity and stable Li uptake/release electrochemistry, yet its practical application is still a big challenge. Here encapsulation of SiOx nanoparticles into conductive graphene bubble film via a facile and scalable self-assembly in solution is shown. The SiOx nanoparticles are closely wrapped in multilayered graphene to reconstruct a flake-graphite-like macrostructure, which promises uniform and agglomeration-free distribution of SiOx in the carbon while ensures a high mechanical strength and a high tap density of the composite. The composites present unprecedented cycling stability and excellent rate capabilities upon Li storage, rendering an opportunity for its anode use in the next-generation high-energy LIBs.
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