Patent ID: 6709788
Filing Date: 2004-03-23
Classification: H01M,Y02E

Abstract:
A lithium secondary cell comprising:a positive electrode including a positive electrode active material containing a LiNiO2 compound expressed as LixNi1âˆ’yMyO2 (M is at least one element selected from a group including Co, Mn, Al, B, Ti, Mg and Fe, 0an electrolytic solution; wherein the BET specific surface area of said LiNiO2 compound is not more than 0.65 m2/g, said binder has a water-soluble polymer not swollen with said electrolytic solution, and the surface of said positive electrode active material is covered by said water-soluble polymer; wherein said LiNiO2 compound has a peak intensity ratio (I006+I102)/I101 of the (006) plane, the (102) plane and (101) plane in the measurement of the X-ray powder analysis is not more than 0.421.