| 摘要 |
For the purpose of increasing the electric capacity of lithium secondary batteries comprising titanium-based negative electrode materials, the present invention aims to produce a titanium oxide compound whose crystal structure, crystallite size, specific surface area and primary particle size are controlled, and to provide a lithium secondary battery comprising such a compound. The present invention produces a lithium secondary battery by using, as an electrode active material, a titanium oxide compound for use in an electrode, which is represented by TiO2.(H2O)a.(A2O)b (wherein A is Na or K, a is 0<a=1, and b is 0<b=0.1) and has a main peak at 2&thetas;=20° to 30° and a minor peak at 2&thetas;=45° to 55° in its X-ray diffraction pattern, wherein the crystallite size determined from the main peak ranges from 40 Å more to 500 Å or less.
|
