Patent ID: 9263747
Filing Date: 2016-02-16
CPC Classification: H01M,Y02E,Y02T

Claim Text:
1. A positive electrode comprising: a positive electrode material layer comprising a positive electrode active material having a composition represented by a formula (1), wherein the positive electrode material layer satisfying formula (2); and a positive electrode current collector on which the positive electrode material layer is formed; wherein M is at least one element selected from the group consisting of Mg, Al, Mn, Si, Ti, Zn, Zr, Ca and Sn; x, a and b satisfy 0.9<x≦1.25, 0<a≦0.4, and 0≦b≦0.45; wherein S wherein the positive electrode material has a mode diameter in a range of 1.2 μm to 4.5 μm in a pore distribution obtained by a pore distribution measurement of pores having a pore diameter of from 0.003 to 60 μm according to a mercury porosimetry.