The 4th Asian Concrete Federation Symposium on Emerging Technologies for Structural Longevity (ACF2023- ETSL)

252 / 2022-06-23 18:31:52

Electrochemical performance and functionalization application of carbon fiber under chloride environment

Carbon Fiber; CFRP Waste Recycle; Electrochemical Performance; Functionalization Application; ICCP-SS

Composite materials with carbon fiber (CF) as reinforcement, such as carbon fiber reinforced polymer (CFRP) and carbon fiber reinforced cementitious material (CFRCM) have been utilized in the structural reinforcement and enhancement in civil engineering. Meanwhile, CF can be exploited as electrode material due to its excellent electrical conductivity and stable electrochemical properties. In this paper, the electrochemical performance of CF under the coupled effect of polarization and chloride ion was revealed. It was found that the chloride solution had splendid infiltration effect on the surface of CFRP. Meanwhile, the chloride ion could promote the electrochemical activity of CF, thus enhancing the stability of CF under anodic polarization. Therefore, CF can withstand higher anode current density, load more charge (Fig. 1), and maintain better mechanical properties (Fig. 2) in the chloride environment. The research results can guide the functional applications of CF.