标题:Multiphase Ge-based Ge/FeGe/FeGe2/C composite anode for high performance lithium ion batteries
作者:Wei, Denghu; Zeng, Suyuan; Li, Haibo; Li, Xiaona; Liang, Jianwen; Qian, Yitai
作者机构:[Wei, Denghu] Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252059, Shandong, Peoples R China.; [Zeng, Suyuan; Li, Haibo] Liaocheng Univ, Dept Chem, 更多
通讯作者:Wei, DH
通讯作者地址:[Wei, DH]Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252059, Shandong, Peoples R China.
来源:ELECTROCHIMICA ACTA
出版年:2017
卷:253
页码:522-529
DOI:10.1016/j.electacta.2017.09.105
关键词:germanium; lithium ion battery; anode; alloy; energy storage
摘要:A multiphase Ge-based Ge/FeGe/FeGe2/C (Fe-Ge-C) composite is prepared through the reaction between ferrous tartrate and GeO2 at Ar/H-2 atmosphere, in which the active Ge, alloying components and amorphous carbon are generated synchronically. When evaluated as an anode material for lithium ion batteries, the Fe-Ge-C anode manifests an enhanced capacity of 1095 mA h g(-1) at 0.1 A g(-1) and with capacity retention of 890 mA h g(-1) at 0.5 A g(-1) over 400 cycles. A good rate capacity of 465 mA h g(-1) at 10 A g(-1) is also obtained. The synchronically formed conductive alloying components and amorphous carbon lead to the long cycle stability, and good rate capability. Furthermore, the synthetic route could be extended to the preparation of other kinds of multiphase Ge-based composites. (C) 2017 Elsevier Ltd. All rights reserved.
收录类别:SCOPUS;SCIE
WOS核心被引频次:1
Scopus被引频次:2
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85029669231&doi=10.1016%2fj.electacta.2017.09.105&partnerID=40&md5=4de88a5551675cc1bfbbb45b06341e50
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