一种镍催化修补缺陷的石墨烯导热膜、制备方法及应用
By using nickel catalysis to repair defects and utilizing the carburizing and carbon precipitation catalytic properties of nickel source, the problem of numerous defects in graphene thermal conductive films during industrial mass production was solved, and a graphene thermal conductive film with high thermal conductivity was prepared, achieving a higher thermal diffusivity and a lower graphitization temperature.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG MORION NANOTECHNOLOGY CO LTD
- Filing Date
- 2024-09-13
- Publication Date
- 2026-07-17
AI Technical Summary
In industrial mass production, excessive defects in graphene thermal conductive films hinder phonon transmission and affect thermal conductivity. Existing technologies are insufficient to effectively repair graphene sheet defects and reduce thermal conductivity.
A method for repairing defects using nickel catalysis is employed. This method involves pretreatment, introduction of a nickel source, carbonization, and graphitization. By utilizing the carburizing and carbon precipitation catalytic properties of the nickel source, defects in graphene sheets can be repaired, thereby improving crystallinity and thermal conductivity.
A graphene thermally conductive film with fewer defects and higher crystallinity was prepared, with a thermal diffusivity of over 860 mm²/s, significantly improved thermal conductivity, lower graphitization temperature, and carbon source to repair defects during the carbonization stage.
Smart Images
Figure CN119176551B_ABST