Needle-like CoO nanowires grown on carbon cloth for enhanced electrochemical properties in supercapacitors

Abstract

Needle-like CoO nanowires grown on carbon cloth have been successfully fabricated by a controllable hydrothermal method followed by an annealing process. The as-fabricated nanostructure showed enhanced specific capacitances and excellent cycling stability in supercapacitors.

Effect of annealing on the size dependent deformation behavior of thin cobalt films on flexible substrates

“…Cobalt is a common material in magnetic storage devices [1] and can be used in form of cobalt oxide as supercapacitors [2] or as the anode material in lithium ion batteries [3]. Due to the advanced miniaturization of these devices and the consequential geometrical constraints, thin cobalt films exhibit a completely different magnetic and mechanical behavior compared to the bulk material [4][5][6][7][8].…”

Vertically aligned carbon nanotube@MnO2nanosheet arrays grown on carbon cloth for high performance flexible electrodes of supercapacitors

“…28,29 Furthermore, the exible substrates, such as carbon cloth and carbon ber papers, are promising for fabrication of exible electrodes in supercapacitors because of their excellent conductivity and exibility. [30][31][32] However, the efficient combination between exible substrates and MnO 2 -based electrode is necessary to resist bending activity during the practical applications, in order to avoid the resulted capacitance decaying and lifetime shortening of exible supercapacitors.…”

Binder-Free Co4N Nanoarray on Carbon Cloth as Flexible High-Performance Anode for Lithium-Ion Batteries

“…Binder-free Co 4 N nanoarrays on flexible carbon cloth (Co 4 N/CC) were prepared via a facile synthetic strategy, as depicted in Figure . First, pretreated CC (Supporting Information Figure S1) served as flexible substrate for the growth of needle-like Co­(OH)F nanoarrays through hydrothermal method . After heating at 120 °C for 6 h, the color of CC immersing in solution totally changed from black to pink, indicating the full covering of CC with Co­(OH)F nanoarrays, as shown in Figure S2.…”