| abstract |
The purpose of the present invention is to provide an electrode conductive agent for lithium ion batteries with which it is possible, even when the content ratio of Ni in an active material is increased, to suppress potential decrease and corrosion of a collector foil, and to increase battery capacity, reduce charge time, and increase battery life. The present invention provides an electrode conductive agent, an electrode composition, and an electrode that contain exfoliated graphite having the following features: (1) The band intensity ratio of a Raman spectrum according to Raman spectroscopic analysis using an Ar laser satisfies the relationship [intensity of the G band (1580 cm -1 )/intensity of the D band (1360 cm -1 )]≧8; and (2) the half width of the G band of a Raman spectrum according to Raman spectroscopic analysis using an Ar laser is 15 to 22 cm -1 . |