CONDUCTIVE COMPOSITION, COLLECTOR WITH UNDERLYING FOR POWER STORAGE DEVICE, ELECTRODE FOR POWER STORAGE DEVICE, AND POWER STORAGE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a conductive composition for forming a power storage device (e.g., a lithium ion secondary battery) which improves output characteristics or the like of the power storage device by improving conductivity during ordinary operation and includes a function for increasing internal resistance in the case where an internal temperature of the power storage device rises, the conductive composition being improved in conductivity and a safety function of the power storage device.SOLUTION: The present invention relates to a conductive composition of an electrode for power storage device containing a conductive carbon material (A), a water-soluble resin (B), a water dispersion resin particles (C) and an aqueous liquid-state medium (D). The conductive composition for underlying layer formation of the electrode for power storage device is characterized in that the water dispersion resin particles include at least olefin-based resin particles. In a solid component of the conductive composition, a content of the conductive carbon material (A) is 10 to 60 mass%, a content of the water-soluble resin (B) is 5 to 50 mass% and a content of the water dispersion resin particles (C) is 20 to 70 mass%.SELECTED DRAWING: None