사업단 성과
사업단 성과
분야
Isotropic thermal conductivity
학술지구분
SCI
JCR
Q1 10.9%
교신저자
이상현
출판일
2025-04-05
저널명
Journal of Alloys and Compounds
페이지 정보
본문
Abstract
In this study, we successfully fabricated graphene/metal composites with high isotropic thermal conductivities. To address the thermal anisotropy resulting from the mismatch between the in-plane and through-plane thermal conductivities of multilayer graphene, we synthesized graphene foam (GF) with a three-dimensional structure. A homogeneous Cu layer was deposited by electroplating on the GF surface, filling the pores. Following the removal of pores in the composites through a spark plasma sintering process, the thermal conductivity of Cu–GF containing only 0.15 vol% of graphene was found to be significantly enhanced, with an increase of ∼ 9 % compared to that of electroplated Cu. The incorporation of a thin Ti layer into the composites resulted in a higher Cu plating rate and achieved a ratio of 1.01 between the in-plane and through-plane thermal conductivities. These results are expected to be effectively applied in the advanced electronics industry, in which a high heat dissipation capacity is a crucial requirement.