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Porous Li 4 Ti 5 O 12 Coated with N‐Doped Carbon from Ionic Liquids for Li‐Ion Batteries
Author(s) -
Zhao Liang,
Hu YongSheng,
Li Hong,
Wang Zhaoxiang,
Chen Liquan
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201003294
Subject(s) - materials science , ionic liquid , carbon fibers , electrochemistry , doping , coating , ion , porosity , mixing (physics) , ionic bonding , electrode , nitrogen , chemical engineering , layer (electronics) , nanotechnology , inorganic chemistry , composite material , optoelectronics , organic chemistry , composite number , chemistry , catalysis , physics , quantum mechanics , engineering
A uniform nitrogen‐doped carbon coating layer is formed on Li 4 Ti 5 O 12 particles by mixing porous Li 4 Ti 5 O 12 powder with an ionic liquid and then treating the mixture at moderate temperature. Uniformly coated Li 4 Ti 5 O 12 is shown to have significantly improved rate capability and cycling performance for Li‐ion batteries. This relatively simple approach is versatile and can be extended to modify other electrode materials for electrochemical devices.