METAL OXIDE NANOPARTICLE-CONDUCTIVE AGENT COMPOSITION, LITHIUM ION SECONDARY BATTERY AND LITHIUM ION CAPACITOR USING THE SAME, AND METHOD FOR PRODUCING METAL OXIDE NANOPARTICLE-CONDUCTIVE AGENT COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide: a metal oxide nano particle-conductive agent complex capable of achieving both increased capacity and increased output when used for at least a part of an electrode material of a lithium secondary battery or lithium ion capacitor, and corresponding to charge transfer characteristics of lithium ions; an electrode agent using the complex for at least a part thereof; and a lithium secondary battery and a lithium ion capacitor.SOLUTION: In a metal compound-conductive agent complex, the average of minimum diameters of metal oxide nano particles is 15 nm or more and 100 nm or less, and the metal oxide nano particles occupy 60% or more of the area of the conductive agent surface, and are firmly joined.