Nickel oxide grown on carbon nanotubes/carbon fiber paper by electrodeposition as flexible electrode for high-performance supercapacitors

Abstract

Carbon nanotubes (CNTs) grown on the carbon fiber paper (CFP) via chemical vapor deposition system is used as flexible substrate. NiO nanoparticles are electrodeposited onto CNTs/CFP flexible substrate by electrochemical deposition technique, which is used as a flexible electrode for supercapacitors. The NiO@CNTs/CFP electrode displays specific capacitance as high as 1317 F g -1 at a current density of 1.2 A g -1 , which can preserve a capacitance retention of 90.6 % with a high current density of 9.6 A g -1 . After 3000 cycles, the composite electrode can retain 90 % of initial capacitance, showing good cyclability. Meanwhile, the 3D porous nanostructure of NiO@CNTs/CFP electrode can offer a great opportunity to fabricate a high-performance flexible binder-free supercapacitor electrode, in which all of the materials could take part in the charge-storage process with their surface in direct contact with the electrolyte.

Recent Advancements in Electrochemical Deposition of Metal‐Based Electrode Materials for Electrochemical Supercapacitors

“…Other NiO nanostructured‐based electrode materials have been prepared for high‐performance ESs [142] . Zhang et al [136] . have developed a composite electrode of NiO@CNTs/CFP.…”

“…A flexible electrode for supercapacitor application has been fabricated by Zhang et al [136] where NiO was electrochemically deposited on CNTs/carbon fiber paper (CNTs/CFP). At first, CNTs were grown on CFP by chemical deposition techniques to obtain a flexible CNTs/CFP substrate.…”

“…Other NiO nanostructured-based electrode materials have been prepared for high-performance ESs. [142] Zhang et al [136] have developed a composite electrode of NiO@CNTs/CFP. In this case, CNTs were grown on carbon CFP by the chemical vapor deposition method.…”

“…A flexible electrode for supercapacitor application has been fabricated by Zhang et al [136] . where NiO was electrochemically deposited on CNTs/carbon fiber paper (CNTs/CFP).…”

Laser-induced nanostructuration of vertically aligned carbon nanotubes coated with nickel oxide nanoparticles

“…In particular, NiO-CNT architectures have been reported to be good candidates for the fabrication of efficient electrochemical devices. Thus, NiO-CNT composites have been used to develop H 2 and volatile organic gas sensors [16,17] as well as glucose sensors [18], high performance supercapacitors [19][20][21] and lithiumion batteries [22][23][24]. Regarding catalytic applications, NiO-CNT materials have been used as electrocatalyst for water splitting and in microbial fuel cells [25,26].…”