Sb/Cu2Sb-TiC-C Composite Anode for High-Performance Sodium-Ion Batteriesor

被引：5

作者：

Chae, Seung Chul ^{[1
]}

Hur, Jaehyun ^{[2
]}

Kim, Il Tae ^{[2
]}

机构：

[1] Seoul Natl Univ, Dept Phys Educ, Seoul 151748, South Korea

[2] Gachon Univ, Dept Chem & Biol Engn, Songnam 461701, Gyeonggi Do, South Korea

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2016年 / 16卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

Titanium Carbide; Alloy Anode; Sodium-Ion Batteries; NEGATIVE ELECTRODES; CARBONATE; STORAGE;

D O I：

10.1166/jnn.2016.11932

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel nanostructure consisting of copper-antimony alloy (Cu2Sb) particles dispersed in a conductive hybrid matrix of titanium carbide (TiC) and carbon (C) has been developed by high energy mechanical milling (HEMM) and explored for use as an anode in sodium-ion batteries. By controlling the molar ratio of Cu and Sb, Cu2Sb and Sb are able to co-exist in a matrix. The (Sb)/Cu2Sb-TiC-C samples have been characterized by X-ray diffraction and by high-resolution transmission electron microscopy. Specifically, the Cu2Sb-TiC-C composite anode demonstrates better cyclic performance as well as better rate-capability compared to Sb/Cu2Sb-TiC-C. Additionally, the introduction of the fluoroethylene carbonate (FEC) additive into the electrolyte leads to improved electrochemical performance even at high-rate current densities, when compared to the electrodes without the FEC additive, owing to the formation of a stable and thin SEI layer.

引用

页码：1890 / 1893

页数：4