▎ 摘　　要

NOVELTY - A composite graphite material comprises 70-100 wt.% expanded graphite, 0-30 wt.% graphene material and 0-30 wt.% carbon nanotubes. The composite graphene material has bulk density of 0.15-0.3 g/cm3 and apparent particle size of 50-300 mesh. USE - The composite graphite material is useful for thermal-wave conversion material (claimed). ADVANTAGE - The composite graphite material has excellent high thermal-wave conversion efficiency at low temperature of 10-50?0C, and is inexpensive. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for use of composite graphite material for thermal-wave conversion material.