Patent ID: 8673488
Filing Date: 2014-03-18
Classification: H01M,Y02E,Y02P,Y02T

Abstract:
1. A lithium ion secondary battery comprising: a cathode including a cathode composite layer on a surface of a cathode collector having a cathode active material and a conducting agent; an anode including an anode active material; a separator disposed between said cathode and said anode; and an electrolyte including lithium ions, wherein said cathode active material is represented by the following formula (I), said conducting agent contains particles having an average particle size of 3 μm or more and 12 μm or less in an amount of 1% by weight or more, a thickness of said cathode composite layer formed on said cathode collector is 50 μm or less per one surface and an electrode density of said anode is 1.55 g/cm wherein M is a metal atom containing at least one kind of metal atoms selected from the group consisting of Co, Ni, Fe, Mn, Cu, Mg, Zn, Ti, Al, Si, B and Mo, and 0<x<2.