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Is TiO 2 (B) the Future of Titanium‐Based Battery Materials?
Author(s) -
Fehse Marcus,
Ventosa Edgar
Publication year - 2015
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201500038
Subject(s) - electrochemistry , materials science , battery (electricity) , nanotechnology , titanium , ion , electrode , conductivity , engineering physics , chemistry , power (physics) , metallurgy , thermodynamics , engineering , physics , organic chemistry
Titania materials are gaining interest as negative electrode materials in Li‐ion batteries due to their high power capability and enhanced safety. Today, Li 4 Ti 5 O 12 is the material of choice for commercial batteries, but other titania materials, namely polymorphs of TiO 2 , are being explored because of their similar electrochemical behavior and higher theoretical specific charge capacity. In practice, the specific charge capacity of TiO 2 remains far below the theoretical value of 336 mA h g −1 due to poor electrical conductivity and slow Li‐ion mobility. This Minireview describes the main strategies developed to overcome the limitations of TiO 2 polymorphs. Special attention is given to TiO 2 (B) since its outstanding Li‐ion mobility, the highest mobility among all TiO 2 polymorphs, has led to superior electrochemical performance. Finally, the potential of titania materials in sodium‐ion batteries is also discussed.