Patent ID: 9263743
Filing Date: 2016-02-16
CPC Classification: H01M,Y02E,Y02T

Claim Text:
1. A secondary battery comprising: a cathode; an anode; and an electrolytic solution, wherein: (A) the cathode includes a cathode active material, and the cathode active material includes a lithium phosphate compound represented by a following Formula (1), (B) fine pore distribution of the cathode measured by a mercury intrusion method indicates a peak P (C) a ratio I (D) porosity of the cathode is from about 30 percent to about 50 percent both inclusive, where M1 is at least one selected from the group consisting of: Fe, Mn, Mg, Ni, Co, Al, W, Nb, Ti, Si, Cr, Cu, and Zn; and a and b satisfy 0≦a≦2 and b≦1.