NiO/C nanocapsules with onion-like carbon shell as anode material for lithium ion batteries

被引：83

作者：

Liu, Xianguo ^{[1
,2
]}

Or, Siu Wing ^{[2
]}

Jin, Chuangui ^{[1
]}

Lv, Yaohui ^{[1
]}

Feng, Chao ^{[1
]}

Sun, Yuping ^{[3
]}

机构：

[1] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China

[2] Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

[3] Anhui Univ Technol, Ctr Engn Practice & Innovat Educ, Maanshan 243002, Peoples R China

来源：

CARBON | 2013年 / 60卷

基金：

中国国家自然科学基金;

关键词：

NEGATIVE-ELECTRODE MATERIALS; OXIDES; MICROSPHERES; PERFORMANCE; ARRAY; FILM;

D O I：

10.1016/j.carbon.2013.04.014

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：

The synthesis of NiO/C nanocapsules with NiO nanoparticles as the core and onion-like carbon layers as the shell is reported. The NiO/C nanocapsules deliver an initial discharge capacity of 1689.4 mAh g(-1) at 0.5 C and maintain a high reversible capacity of 1157.7 mAh g(-1) after 50 cycles compared to the NiO nanoparticles of 383.5 mAh g(-1). As an anode material for lithium ion batteries, the NiO/C nanocapsules exhibit a remarkable discharge capacity, a high rate charge-discharge capability and an excellent cycling stability. The improvements are ascribed to the fact that the onion-like carbon shells not only can provide enough voids to accommodate the volume change of NiO nanoparticles but also can prevent the formation of solid electrolyte interface (SEI) films on the surface of the NiO nanoparticles and hence the direct contact of Ni and SEI films upon lithium extraction. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：215 / 220

页数：6

共 35 条

[1] Preparation and electrochemical characterization of NiO nanostructure-carbon nanowall composites grown on carbon cloth [J].