A critical SiOx layer on Si porous structures to construct highly-reversible anode materials for lithium-ion batteries

被引：44
作者：
Chen, Yifan [1 ]
Lin, Yangfan [1 ]
Du, Ning [1 ]
Zhang, Yaguang [1 ]
Zhang, Hui [1 ]
Yang, Deren [1 ]
机构：
[1] Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Cyrus Tang Ctr Sensor Mat & Applicat, Hangzhou 310027, Zhejiang, Peoples R China
来源：
CHEMICAL COMMUNICATIONS | 2017年 / 53卷 / 45期
基金：
中国国家自然科学基金;
关键词：
HIGH-CAPACITY; SCALABLE SYNTHESIS; SILICON NANOWIRES; PERFORMANCE; FABRICATION; COMPOSITE; STORAGE;
D O I：
10.1039/c7cc02732j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A novel Si/SiOx porous structure with a SiOx coating layer of varying thicknesses was prepared via a simple annealing and acid washing process. When used as an anode material for lithium-ion batteries, the Si/SiOx porous structure with an similar to 9 nm SiOx coating layer demonstrates significantly improved electrochemical performance with a high reversible discharge capacity of over 915 mA h g(-1) after 500 long cycles at 1 A g(-1). The lithiation mechanism of a SiOx layer of different thicknesses has also been investigated.
引用
收藏
页码：6101 / 6104
页数：4
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