Co3O4-C core-shell nanowire array as an advanced anode material for lithium ion batteries

被引：206

作者：

Chen, Jiao

Xia, Xin-hui

Tu, Jiang-ping ^{[1
]}

Xiong, Qin-qin

Yu, Ying-xia

Wang, Xiu-li

Gu, Chang-dong

机构：

[1] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 30期

基金：

中国博士后科学基金;

关键词：

ELECTROCHEMICAL ENERGY-STORAGE; TEMPLATE SYNTHESIS; CATHODE MATERIALS; HIGH-CAPACITY; THIN-FILMS; PERFORMANCE; ELECTRODES; COMPOSITE; NANORODS; NANOPARTICLES;

D O I：

10.1039/c2jm31629c

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：

We report on the synthesis of a Co3O4-C core-shell nanowire array and its application as an anode material for lithium ion batteries. The core-shell nanowire array is prepared by combining a facial hydrothermal synthesis and direct current magnetron sputtering. The amorphous carbon layer with a thickness of 18 nm is homogeneously coated on the surface of the porous Co3O4 nanowire. The Co3O4-C core-shell nanowire array delivers an initial discharge capacity of 1330.8 mA h g(-1) at 0.5 C and maintains a high reversible capacity of 989.0 mA h g(-1) after 50 cycles, much higher than the unmodified Co3O4 nanowire array (490.5 mA h g(-1)). The improved electrochemical performance can be attributed to the introduction of a thin carbon layer, which improves the electrical conductivity and structure stability of the Co3O4 nanowire array.

引用

收藏

页码：15056 / 15061

页数：6

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