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

Title
Ultrathin alumina-coated carbon nanotubes as an anode for high capacity Li-ion batteries
Author
선양국
Keywords
ATOMIC-LAYER DEPOSITION; NATURAL GRAPHITE ANODE; ELECTROCHEMICAL LITHIATION; ELECTRODE MATERIALS; LITHIUM STORAGE; RATE CAPABILITY; DE-LITHIATION; PERFORMANCE; OXIDE; COMPOSITES
Issue Date
2011-08
Publisher
ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Citation
JOURNAL OF MATERIALS CHEMISTRY; 2011, 21, 35, p13621-p13626
Abstract
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.
URI
http://pubs.rsc.org/en/Content/ArticleLanding/2011/JM/c1jm11474c#!divAbstract
ISSN
0959-9428
DOI
10.1039/c1jm11474c
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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