Self-assembled hierarchical β-cobalt hydroxide nanostructures on conductive textiles by one-step electrochemical deposition

Abstract

Three-dimensional (3D) hierarchical cabbage-like β-cobalt hydroxide IJβ-CoIJOH) 2) nanostructures were fabricated onto conducive textiles composed of copper-coated polyethylene terephthalate fibers by a simple one-step electrochemical deposition (ED) method. Under an external applied voltage of −0.75 V for 4 h, the hierarchical cabbage-like β-Co(OH) 2 nanostructures were well decorated on the conductive textiles. During the ED process, they were self-assembled by the tangled layers of nanoplate (thickness of~45-55 nm) building blocks and exhibited a cabbage-shaped architecture. The structure and morphology of the as-prepared hierarchical cabbage-like β-Co(OH) 2 nanostructures were characterized. The growth mechanism of cabbage like β-Co(OH) 2 nanostructures was also investigated by varying the growth time. Moreover, the feasibility test for supercapacitors by measuring the electrochemical properties of the as-prepared nanostructures was performed by cyclic voltammetry and galvanic charge-discharge measurements. The obtained results show that the cabbage-like β-Co(OH) 2 nanostructures on the conductive textile substrate exhibited superior energy storage performance compared to the nanoplate morphology.

A facile one-step approach to hierarchically assembled core–shell-like MnO2@MnO2 nanoarchitectures on carbon fibers: An efficient and flexible electrode material to enhance energy storage

“…Among these methods, electrochemical deposition (ED) is a facile approach because it is quick, operates at low-temperature, and has a simple experimental setup. Furthermore, by controlling the external cathodic voltage/current, the morphologies of the nanostructured materials can be tuned [49,50].…”

Highly flexible conductive fabrics with hierarchically nanostructured amorphous nickel tungsten tetraoxide for enhanced electrochemical energy storage

“…Then, the CF pieces were soaked in the seed solution for 15 min and placed in an oven at 120 °C for 2 h to ensure strong adhesion of the seed layer on the CF fibers. A simple two-electrode system with the seed-coated CF substrate as a working electrode and a platinum (Pt) mesh as a counter electrode was utilized [53]. Meanwhile, the growth solution was prepared by dissolving 5 mM of Na 2 WO 4 ·2H 2 O and 5 mM of Ni(NO 3 ) 2 ·6H 2 O in 900 mL of DI water on a hot plate at ~80-82 °C .…”

Nickel-Copper Alloys Modified Electrodes: an Electrochemical Study on their Interfacial and Supercapacitive Properties

“…25 Three-dimensional nanostructures of β-Co(OH) 2 were synthesized by one-step electrodeposition process using a simple two-electrode system. 26 By controlling the time of the voltage applied, the nanostructures were self-assembled from nanoplates to multilayered nanoplates building blocks showing higher specific capacitance values. 26 Macroporous manganese oxide electrodes were prepared by template-assisted electrodeposition showing specific capacitance 60% higher than that obtained from flat surfaces, without loss of capacitance even after 1000 cycles.…”

“…26 By controlling the time of the voltage applied, the nanostructures were self-assembled from nanoplates to multilayered nanoplates building blocks showing higher specific capacitance values. 26 Macroporous manganese oxide electrodes were prepared by template-assisted electrodeposition showing specific capacitance 60% higher than that obtained from flat surfaces, without loss of capacitance even after 1000 cycles. 27 In addition, Tsai et al 28 reported the influence of the electrodeposition method on the morphology and capacitive properties of the electrodes.…”

“…26 By controlling the time of the voltage applied, the nanostructures were self-assembled from nanoplates to multilayered nanoplates building blocks showing higher specific capacitance values.…”