Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 151, Issue 4, Pages A527-A531Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.1649747
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Amorphous titanium oxide was prepared by a sol-gel route employing Ti(IV) alkoxide as a starting agent. The average size of the primary particles was about 4 nm, and the Brunauer-Emmett-Teller specific surface area was 390 m(2) g(-1). Addition of acetylene black in synthesis allowed us to obtain the composite of titania and carbon materials. The composite materials could be galvanostaticly discharged and charged around 2 V vs. Li/Li+. After thermal treatment at 330degreesC the composite showed specific capacity above 125 mA h g(-1), even under large discharge current of 10 A g(-1). Based on the relationship between specific capacity and current density, the chemical diffusion coefficient of lithium was estimated to be 6 x 10(-12) cm(2) s(-1). (C) 2004 The Electrochemical Society.
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