Tetragonal Zinc Diphosphide and Its Nanocomposite as an Anode for Lithium Secondary Batteries

被引：87

作者：

Park, Cheol-Min ^{[1
]}

Sohn, Hun-Joon ^{[1
]}

机构：

[1] Seoul Natl Univ, Res Ctr Energy Convers & Storage, Dept Mat Sci & Engn, Seoul 151742, South Korea

来源：

CHEMISTRY OF MATERIALS | 2008年 / 20卷 / 20期

关键词：

D O I：

10.1021/cm800632f

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：

Tetragonal zinc diphosphide (ZnP2) and its nanocornposite (ZnP2/C) were prepared using commercially available amorphous red phosphorus and zinc powder by high energy mechanical milling (HEMM) at ambient temperature and pressure. The ZnP2/C nanocomposite was composed of uniformly distributed, nanosized, ZnP2 crystallites in the amorphous carbon matrix, as confirmed with X-ray diffraction (XRD) and high resolution transmission electron microscope (HRTEM) analyses. The electrochemical reaction mechanism of the ZnP2/C nanocomposite with lithium was investigated during the first cycle. Electrochemical tests showed that the ZnP2/C nanocomposite exhibited enhanced electrochemical reversibility, good cyclability, and high-rate capability when cycled between 0.55 and 2 V.

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页码：6319 / 6324

页数：6

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