| 摘要 |
PROBLEM TO BE SOLVED: To obtain a homogeneous and fine lithium-titanium complex oxide large in specific surface area and useful e.g. as an anode active substance for secondary batteries by reacting a lithium compound and a titanium compound with a polyol and an oxypolycarboxylic acid and subsequently pyrolyzing the produced water-soluble carboxylate ester complex oligomer. SOLUTION: A lithium compound and a titanium compound soluble in water or an oxypolycarboxylic acid are used. Water-soluble compounds include chloride salts, nitrate slats and sulfate salts. The titanium compound includes tetramethoxy titanium. The polyol includes ethylene glycol. The compounds soluble in the oxypolycarboxylic acid include carbonate salts. The typical oxypolycarboxylic acid includes citric acid. The pyrolysis reaction is carried out by spraying the reaction solution in an atmosphere maintained at 500-700 deg.C. The method gives complex oxides such as Li(Li1/3 Ti5/3 )O4 . |
