Composite conductive material, power storage device, conductive dispersion, conductive device, conductive composite and thermally conductive composite

摘要

A composite conductive material includes at least graphene-like exfoliated from a graphite-based graphite carbon material and a conductive material dispersed in a base material. The graphite-based carbon material has a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more:
Rate(3R)=P3/(P3+P4)×100  (Equation 1)
wherein
P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, andP4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.

主权项

1. A method of producing a composite conductive material, comprising a step of kneading at least a graphite-based carbon material and a conductive material into a base material,
the graphite-based carbon material having, just before the kneading step, a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H), based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more:
Rate (3R)=P3/(P3+P4)×100  Equation 1wherein
P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method; and implementation of the kneading step produces at least graphene exfoliated from the graphite-based carbon material, the graphene being a crystal of a mean size of 100 nm or more and formed in a flake-like or sheet-like shape having 10 layers or less.