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High Lithium Electroactivity of Nanometer‐Sized Rutile TiO 2
Author(s) -
Hu Y.S.,
Kienle L.,
Guo Y.G.,
Maier J.
Publication year - 2006
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.200502723
Subject(s) - rutile , materials science , nanometre , anode , lithium (medication) , nanotechnology , micrometer , ion , chemical engineering , analytical chemistry (journal) , electrode , composite material , optics , chemistry , medicine , physics , engineering , endocrinology , quantum mechanics , chromatography
Nanometer‐sized rutile shows much higher electroactivity towards Li insertion than micrometer‐sized rutile. Up to 0.8 mol of Li per mole of TiO 2 can be inserted into nanometer‐sized rutile at room temperature (see figure), which is able to reversibly accommodate Li up to Li 0.5 TiO 2 with excellent capacity retention and high rate capability on cycling, rendering it a promising anode material for high‐power lithium‐ion batteries.
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