Preparation of Li4.4GexSi1-x alloys by mechanical milling process and their properties as anode materials in all-solid-state lithium batteries
Preparation of Li4.4GexSi1-x alloys by mechanical milling process and their properties as anode materials in all-solid-state lithium batteries
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DOI：
10.1016/j.ssi.2004.08.022
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发表时间：
2004-11-30
影响因子：
3.2
通讯作者：
Shigematsu, T
中科院分区：
文献类型：
--
作者：
Hashimoto, Y;Machida, N;Shigematsu, T
采用高能球磨法制备了Li4.4GexSi（1-x）合金。Li_（4.4）Ge_xSi_（1-x）合金在0 ≤ x ≤ 1的整个组成范围内均形成固溶体。这些合金与具有属于空间群I43 d的D8（6）结构的Li 15 Ge 4晶相同构。合金的晶格常数随组成参数x的增大而增大。研究了Li4.4GexSi1-x合金作为无机固体电解质a-60 Li（2）S（.）40 SiS（2）（摩尔%）。在所获得的合金中，Li4.4Ge0.67Si0.33合金显示出190 mA h g（-1）的最大比容量和良好的充放电可逆性。(C)2004 Elsevier B. V.保留所有权利。
Li4.4GexSi1-x alloys were prepared by use of a high-energy ball-milling process. The Li4.4GexSi1-x alloys formed a solid solution over the whole composition range of 0less than or equal toxless than or equal to1. Those alloys were isomorphic with an Li15Ge4 crystalline phase that had a D8(6) structure belonging to a space group I43d. The lattice constants of the alloys were increased with an increase in the compositional parameter x. The Li4.4GexSi1-x alloys were investigated as negative electrode materials for all-solid-state lithium batteries with an inorganic solid electrolyte a-60Li(2)S (.) 40SiS(2) (mol%). Among the obtained alloys, the Li4.4Ge0.67Si0.33 alloy showed the largest specific capacity of 190 mA h g(-1) and good charge-discharge reversibility. (C) 2004 Elsevier B.V. All rights reserved.