Highly thermally conductive graphene film produced using glucose under low-temperature thermal annealing
Graphene films have attracted much attention as a heat dissipation material due to their unique thermal transfer behavior that exceeds that the performance of graphite. However, the very high thermal annealing temperature (~ 3000 °C) required to reduce the graphene oxide (GO) films leads to high manufacturing costs and restricts its broader application in thermal management applications. In this study, a modified-graphene (m-Gr) film was fabricated by vacuum-filtering GO suspensions with added glucose, followed by thermal annealing at 1000 °C. Oxygen-containing functional groups were effectively eliminated during annealing and activated carbon atoms from the decomposition of glucose molecules repaired defects in the graphene sheets to restore large areas of the π-conjugated structure. The as-obtained m-Gr films showed excellent in-plane thermal conductivity ~ 1300 Wm−1 K−1 and much more efficient heat removal than pristine-reduced graphene oxide films. This high thermal conductivity of m-Gr films provides opportunities for their use in next-generation commercial electronics.
The authors acknowledge financial support by the “13th Five-Year Plan” Civil Aerospace Technology Pre-Research Project of the State Administration of Science, Technology, and Industry for National Defense (501-01-2018-0167, A2180150); the Fundamental Research Funds for the Central Universities (D2175010); and the Joint Fund for Equipment Pre-Research of Ministry of Education of China (6141A02022520).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- 37.Ding J, ur Rahman O, Zhao H, Peng W, Dou H, Chen H et al (2017) Hydroxylated graphene-based flexible carbon film with ultrahigh electrical and thermal conductivity. Nanotech. 28:(39)LT01-9Google Scholar