Work

Developing graphene oxide@In-Bi alloy composite via layer-by-layer strategy achieving efficient heat dissipation towards thermal interfacial applications

Year: 2025

Type: article

Abstract: We develop a graphene oxide (GO)@In-Bi alloy composite that exhibits flexibility, leak-proof properties, and efficient interfacial heat transfer. This composite was fabricated using a layer-by-layer strategy for applications in thermal interface materials (TIMs). The incorporation of liquid metal with high thermal conductivity enhances the cross-plane thermal conductivity of the GO film to 1.35 W/(m · K) while reducing the thermal contact resistance to 0.47 °C cm 2 /W. Upon exposure to high-temperature conditions, the In-Bi phase transition occurs, filling the gaps between rough interfaces and facilitating interface wetting, thereby improving heat transfer efficiency. Additionally, due to surface tension effects, the liquid alloy evenly coats the GO surface, providing the composite film with robust mechanical properties and ensuring excellent leak resistance. Overall, this study presents a novel approach for fabricating flexible liquid alloy-based composites with high thermal conductivity and low thermal contact resistance, providing fresh perspectives on the synthesis of TIMs.

Source: Transactions of Materials Research

DOI: 10.1016/j.tramat.2025.100010

Authors: Yifan Li, Junhui Fan, Changqing Liu, Dahai Zhu, Chen Jiang, Wei Yu

Institutions: Shanghai Polytechnic University, Shaoyang University

Language: English

Topic: Thermal properties of materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $1,600

Funder: National Natural Science Foundation of China