Advance in the continuous preparation methods and applications of metallized carbon fiber

Metallized carbon fiber (CF) possesses multiple properties, such as the original fiber`s lightweight and high strength, as well as the metal's high electrical/thermal conductivity. It has the potential to partially replace traditional metal materials in various fields, including EMI, pro-lightning, de-icing/anti-icing, power transmission, super-capacitors, signal sensing, and structure-function integration of composites. This innovative approach surpasses material limitations and exhibits remarkable market application potential. This papper reviewed the development made by researchers on the metallized CF. The main carbon fiber metallization process routes in recent years were analyzed, including spraying, magnetron sputtering (PVD), chemical vapor deposition (CVD), electroplating, electroless plating, etc. From the perspective of commercial engineering application, the core links and process characteristics of electroplating and electroless plating were analyzed, possessing the capability for continuous metallization of extensive lengths. The application status of metallized carbon fiber (MCF) is summarized, and the challenges and future development trend of carbon fiber surface metallization are prospected.