Ferrocene functionalized multi-walled carbon nanotubes as supercapacitor electrodes

• Main Authors: Ali, Gomaa A. M., Megiel, Elzbieta, Cieciórski, Piotr, Thalji, Mohammad R., Romański, Jan, Algarni, H., K. F., Chong
• Format: Article
• Language: English
• Published: Elsevier 2020
• Subjects: TA Engineering (General). Civil engineering (General)
• Online Access: http://umpir.ump.edu.my/id/eprint/29155/1/Ferrocene%20functionalized%20multi1.pdf; http://umpir.ump.edu.my/id/eprint/29155/; https://doi.org/10.1016/j.molliq.2020.114064; https://doi.org/10.1016/j.molliq.2020.114064

Modified multi-walled carbon nanotubes (MWCNTs) functionalized by a redox-active ferrocene (Fc-MWCNTs) were successfully synthesized to enhance the electrochemical performance of MWCNTs for supercapacitor application. The ferrocene moieties were attached to the surface of MWCNTs via a thiourea linker with anions-interacting capability. The Fc-MWCNTs were characterized using XPS, FTIR, SEM, TGA, DTG, and XRF methods. The electrochemical performance details were investigated using cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy. The Fc-MWCNTs electrode showed excellent capacity retention (90.8% over 5000 cycles) and a specific capacitance of 50 F g−1 at 0.25 A g−1 that is several times higher as compared to the pristine MWCNTs. The fabricated Fc-MWCNTs is proposed to be a suitable and promising candidate for energy storage material. dec