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CoO@N‐Doped Carbon Composite Nanotubes as Excellent Anodes for Lithium‐Ion Batteries
Author(s) -
Ren Manman,
Li Fanyan,
Liu Weiliang,
Li Mei,
Li Guangda,
Hei Jinpei,
Su Liwei,
Wang Lianzhou
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201700694
Subject(s) - materials science , anode , lithium (medication) , composite number , carbon fibers , carbon nanotube , chemical engineering , fabrication , nanorod , nanotechnology , doping , oxide , nanoparticle , composite material , electrode , chemistry , optoelectronics , metallurgy , medicine , alternative medicine , pathology , engineering , endocrinology
Abstract In this work, we report the successful fabrication a new type of CoO@N‐doped carbon matrix composite nanotubes (CoO@NC Ntm) using Co(CO 3 ) 0.5 (OH)⋅0.11H 2 O needlelike nanorods as the self‐sacrifice templates and polypyrrole as carbon and nitrogen sources. The preparation process is facile and efficient. CoO nanoparticles are homogeneously embedded in the N‐doped carbon nanotube matrix. Combining the benefits of the N‐doped carbon matrix and the special architecture, CoO@NC Ntm delivers a superior long‐term cycling stability and high‐rate performance as the anode material for lithium‐ion batteries. Even when tested at a higher current density of 2000 mA g −1 , a reversible capacity of 523.4 mAh g −1 can be retained after 1000 cycles, with capacity retention of almost 100 % from 2 to 1000 cycles. This work may shed light on the fabrication of other oxide materials @N‐doped carbon matrix composites for energy‐storage applications.