Ultrathin alumina-coated carbon nanotubes as an anode for high capacity Li-ion batteries

被引：58

作者：

Lahiri, Indranil ^{[1
]}

Oh, Seung-Min ^{[2
]}

Hwang, Jun Y. ^{[3
]}

Kang, Chiwon ^{[1
]}

Choi, Mansoo ^{[4
]}

Jeon, Hyeongtag ^{[4
]}

Banerjee, Rajarshi ^{[3
]}

Sun, Yang-Kook ^{[2
]}

Choi, Wonbong ^{[1
,2
]}

机构：

[1] Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33174 USA

[2] Hanyang Univ, Dept Energy Engn, Seoul 133791, South Korea

[3] Univ N Texas, Dept Mat Sci & Engn, Denton, TX 76203 USA

[4] Hanyang Univ, Dept Mat Sci & Engn, Seoul 133791, South Korea

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 35期

关键词：

ATOMIC-LAYER DEPOSITION; NATURAL GRAPHITE ANODE; ELECTROCHEMICAL LITHIATION; ELECTRODE MATERIALS; LITHIUM STORAGE; RATE CAPABILITY; DE-LITHIATION; PERFORMANCE; OXIDE; COMPOSITES;

D O I：

10.1039/c1jm11474c

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：

Alumina-coated carbon nanotubes (CNTs) were synthesized on a copper substrate and have been used as an anode in Li-ion batteries. CNTs were grown directly on the copper current collector by chemical vapor deposition and an ultrathin layer of alumina was deposited on the CNTs by atomic layer deposition, thus forming the binder-free electrode for the Li-ion battery. While CNTs, which form the core of the structure, provide excellent conductivity, structural integrity and Li-ion intercalation ability, the aluminium oxide coating provides additional stability to the electrode, with further enhancement of capacity. The anode showed very high specific capacity, good capacity retention ability and excellent rate capability. This novel anode may be considered as an advanced anode for future Li-ion batteries.

引用

页码：13621 / 13626

页数：6

共 52 条

[1] Practical performances of Li-ion polymer batteries with LiNi0.8Co0.2O2, MCMB, and PAN-based gel electrolyte [J].