In-situ TEM study of the lithiation and delithiation of FeS nanosheets

被引：27
|
作者：
Chen, Kaijian [1 ]
Cao, Ke [2 ]
Xing, Chengcheng [2 ]
Hu, Yongping [1 ]
Liu, Jiabin [2 ]
He, Yan [3 ]
Wang, Juan [3 ]
Li, Aiguo [3 ]
Qin, Haiying [1 ]
机构：
[1] Hangzhou Dianzi Univ, Coll Mat & Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China
[2] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
[3] Chinese Acad Sci, Shanghai Inst Appl Phys, SSRF, Shanghai 201800, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 688卷
基金：
中国国家自然科学基金;
关键词：
Electrode materials; Chemical synthesis; Microstructure; FeS nanosheets; In-situ transmission electron microscopy; ENHANCED ELECTROCHEMICAL PERFORMANCE; LITHIUM-ION BATTERIES; STORAGE PERFORMANCE; NANOWIRES; ELECTRODE; ANODE;
D O I：
10.1016/j.jallcom.2016.07.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
FeS nanosheets were synthesized and used as anodes to investigate their electrochemical properties and reaction mechanism during the lithiation and delithiation processes by using in-situ transmission electron microscopy. The FeS nanosheets converted to Fe nanoparticles of 2-3 nm embedded within Li2S matrix after the first lithiation. Then the Fe and Li2S transformed into Li1.13FeS2 instead of FeS during the first delithiation. The reversible phase conversion between Fe/Li2S and Li1.13FeS2 dominated the following cycles. The nanosheets structure was well held with small volume expansion during several lithiation and delithiation cycles. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：946 / 952
页数：7
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