| 摘要 |
PROBLEM TO BE SOLVED: To provide a large sized non-aqueous secondary battery cell, containing titanic a cid lithium compound for negative electrode active substance, which exhibits a small degree of expansion/shrinkage of electrodes upon charging/ discharging and thus has an extended cycle time, and high reliability and stabil ity, as well as high energy density, because of high electrical energy density of the titanic acid compound, and which has good yield and easiness in manufac turing without causing agglomeration. SOLUTION: The non-aqueous secondary battery cell of the present invention employs a secondary particle formed by agglomerating primary particles of titanic acid lithium compound having an average particle size of less than 1 μm and represented by the following formula 1, into granules having an average particle size of 5 to 100 μm: LiaTi3-aO4 (1) (Herein, 0<a<3). |
