Abstract
To improve the electrical properties of carbon fiber (Cf), the fiber surface was carboxylated with nitric acid, aminated with ethylenediamine, and coated with graphene oxide (GO) through self-assembly. The GO-coated Cf was reduced by heat treatment in a temperature range of 500 to 1300 °C. For structural analysis of the reduced GO (rGO), HRTEM, XRD, and Raman spectroscopy were performed, and an I-V curve was obtained to visualize the electrical property. As the heat treatment temperature increased, the crystallinity increased, and the ID/G at 900 degrees was 1.3067, which is the highest value in Raman spectroscopy. The I-V curve reached its highest point at 700 °C and lowest point at 900 °C. This confirmed that the difference in properties at the two temperatures originated from the number of vacancy defects present in the coated rGO. Our experiment confirmed that vacancy defects were more fatal than the oxygen-related functional groups present in GO in terms of electrical properties.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
