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Binary Lithium Titanate–Titania Nanocomposite Thin‐Film Electrodes for Electrochemical Energy Storage
Author(s) -
Yu Zhaozhe,
Xu Huarui,
Zhu Guisheng,
Yan Dong Liang,
Yu Aibing
Publication year - 2016
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201600035
Subject(s) - materials science , nanocomposite , anode , lithium (medication) , electrochemistry , lithium titanate , electrode , sputter deposition , chemical engineering , thin film , lithium ion battery , sputtering , nanotechnology , battery (electricity) , chemistry , medicine , power (physics) , physics , quantum mechanics , endocrinology , engineering
Abstract This work introduces a facile approach for preparation of binary nanocomposite thin film electrodes for lithium‐ion batteries with excellent storage capability, high rate performance, and good electrochemical stability. The Li 4 Ti 5 O 12 ‐TiO 2 film electrodes are prepared by radio frequency (RF) magnetron sputtering deposition using a Li 4 Ti 5 O 12 and TiO 2 powder mixture target as sputtering source in an argon atmosphere. The Li 4 Ti 5 O 12 –TiO 2 electrode yields good electrochemical performance in terms of high capacity (295 mAh g −1 ) at a current density of 0.1 C, good cycling stability (≈5 % capacity loss after 100 cycles at 0.1 C), and excellent rate capability (158 mAh g −1 at a current density of 5 C). The factors contributing to the excellent electrochemical performance are related to the binary nanocomposite structure. The results suggest that the Li 4 Ti 5 O 12 –TiO 2 nanocomposite thin film can be used as an anode material for high‐performance lithium‐ion batteries.