Premium
A Designed TiO 2 /Carbon Nanocomposite as a High‐Efficiency Lithium‐Ion Battery Anode and Photocatalyst
Author(s) -
Peng Liang,
Zhang Huijuan,
Bai Yuanjuan,
Feng Yangyang,
Wang Yu
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201502678
Subject(s) - anode , nanocomposite , materials science , photocatalysis , lithium (medication) , ion , lithium titanate , carbon fibers , battery (electricity) , lithium ion battery , chemical engineering , nanotechnology , inorganic chemistry , composite material , chemistry , electrode , composite number , catalysis , engineering , organic chemistry , power (physics) , physics , quantum mechanics , medicine , endocrinology
Herein, a peapod‐like TiO 2 /carbon nanocomposite has successfully been synthesized by a rational method for the first time. The novel nanostructure exhibits a distinct feature of TiO 2 nanoparticles encapsulated inside and the carbon fiber coating outside. In the synthetic process, H 2 Ti 3 O 7 nanotubes serve as precursors and templates, and glucose molecules act as the green carbon source. With the alliciency of hydrogen bonding between H 2 Ti 3 O 7 and glucose, a thin polymer layer is hydrothermally assembled and subsequently converted into carbon fibers through calcinations under an inert atmosphere. Meanwhile, the precursors of H 2 Ti 3 O 7 nanotubes are transformed into the TiO 2 nanoparticles encapsulated in carbon fibers. The achieved unique nanocomposites can be used as excellent anode materials in lithium‐ion batteries (LIBs) and photocatalytic reagents in the degradation of rhodamine B. Due to the synergistic effect derived from TiO 2 nanoparticles and carbon fibers, the obtained peapod‐like TiO 2 /carbon cannot only deliver a high specific capacity of 160 mAh g −1 over 500 cycles in LIBs, but also perform a much faster photodegradation rate than bare TiO 2 and P25. Furthermore, owing to the low cost, environmental friendliness as well as abundant source, this novel TiO 2 /carbon nanocomposite will have a great potential to be extended to other application fields, such as specific catalysis, gas sensing, and photovoltaics.