Solvothermal synthesis and ex situ XRD study of nano-Ni3Sn2 used as an anode material for lithium-ion batteries

被引：30

作者：

Qin, Haiying ^{[1
]}

Zhao, Xinbing ^{[1
]}

Jiang, Nianping ^{[1
]}

Li, Zhoupeng ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Mat Sci & Chem Engn, Hangzhou 310027, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2007年 / 171卷 / 02期

关键词：

lithium-ion battery; anode; Ni3Sn2; solvothermal synthesis; Ex situ XRD;

D O I：

10.1016/j.jpowsour.2007.05.097

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：

Nano-Ni3Sn2 intermetallic compound was successfully prepared by solvothermal method for an anode material of lithium-ion batteries. Its microstructure was characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). Electrochemical performances were evaluated in a lithium-ion model cell Li/LiPF6 (EC + DMC)/Ni3Sn2. The electrochemical lithiation and de-lithiation behavior of nano-Ni3Sn2 was investigated by ex situ XRD. Diffraction peaks of Ni3Sn2 widened and shrank gradually during lithiation. Sharp Ni3Sn2 peaks appeared again after full de-lithiation. It was proved that nano-Ni3Sn2 could be reversibly charged and discharged with lithium though the de-lithiation capacity of nano-Ni3Sn2 was lower than its theoretical capacity. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：948 / 952

页数：5

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