Tatung Company

Mu-Rong Yang

She-Huang Wu

Yung-Jen Lin

Wen-Jen Liu

Yi-Shiuan Chen

A method for producing a positive electrode material adapted to the Li-ion secondary batteries is disclosed. The produced material has the following formula (I),LiMnMO&#x2003;&#x2003;(I)wherein M is Mg, Al, Cr, Fe, Co, or Ni; 0&#x2266;x&#x2266;0.4, and 0&#x2266;y&#x2266;0.2. The method is achieved by co-precipitating a gel salts with an organic acid. First, salts of Li, Mn and M are mixed with at least a solvent to form an initial solution. The mole ratio of Li, Mn and M ions in their respective salts is (1+x):(2&#x2212;y):y. Next, at least a chelate is added into the initial solution to form a suspension, which is then filtered to obtain a co-precipitate. Finally, the co-precipitate is calcined and heated to obtain the final product.

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Taipei, Taiwan

Mu-Rong Yang