Design and Construction of Cu(OH)2/Ni3S2 Composite Electrode on Cu Foam by Two-Step Electrodeposition

Abstract

A Cu(OH)2/Ni3S2 composite has been designed and in situ constructed on Cu foam substrate by facile two-step electrodeposition. Cu(OH)2 is achieved on Cu foam by galvanostatic electrodeposition, and the subsequent coating of Ni3S2 is realized by cyclic voltammetric (CV) electrodeposition. The introduction of Cu(OH)2 provides skeleton support and a large specific surface area for the Ni3S2 electrodeposition. Benefiting from the selection of different components and preparation technology, the Cu(OH)2/Ni3S2 composite exhibits enhanced electrochemical properties with a high specific capacitance of 4.85 F cm−2 at 2 mA cm−2 and long-term cyclic stability at 80.84% (4000 cycles).

Gold-Promoted Electrodeposition of Metal Sulfides on Silicon Nanowire Photocathodes To Enhance Solar-Driven Hydrogen Evolution

“…Then, Co 2+ in solution combines with S 2– to form CoS. Based on both experimental and calculation results, we tried to expand the application of SiNW/Au structures, and other metal sulfides, including MoS 2 and Ni 3 S 2 , are loaded on the surface of SiNWs/Au by electrodeposition. Figure d shows the CV curves of electrodeposition of MoS 2 and Ni 3 S 2 on SiNWs/Au, and the rapid reduction of MoS 2 and Ni 3 S 2 on the SiNWs/Au surface can be judged by the high reduction peaks. , The SEM images (Figure S8) show that MoS 2 and Ni 3 S 2 are uniformly coated on the surface of SiNWs/Au, respectively. XPS results (Figure S9) provide sufficient evidence that SiNWs/Au/MoS 2 and SiNWs/Au/Ni 3 S 2 are successfully prepared. , The hydrogen production performance of SiNWs/Au/MoS 2 and SiNWs/Au/Ni 3 S 2 is investigated by polarization curves under simulated AM 1.5G solar irradiation.…”

“…Figure 5d shows the CV curves of electrodeposition of MoS 2 and Ni 3 S 2 on SiNWs/Au, and the rapid reduction of MoS 2 and Ni 3 S 2 on the SiNWs/Au surface can be judged by the high reduction peaks. 56,57 The SEM images (Figure S8) show that MoS 2 and Ni 3 S 2 are uniformly coated on the surface of SiNWs/Au, respectively. XPS results (Figure S9) provide sufficient evidence that SiNWs/Au/MoS 2 and SiNWs/Au/Ni 3 S 2 are successfully prepared.…”

Emerging materials for electrochemical CO2reduction: progress and optimization strategies of carbon-based single-atom catalysts

“…122,123 The electrodeposition technique is one of the commonly used methods for preparing electrocatalysts and has a number of greatly outstanding advantages, such as simple equipment and environmental friendliness. 123 More importantly, using this technique, loaded catalysts can be directly deposited on different substrates (carbon-based materials, [124][125][126] metal foams [127][128][129] and metal foils, 128 etc.) to prepare CO 2 RR electrodes without the addition of other binders and conductive additives.…”

Anchoring Ni3S2/Cr(OH)3 hybrid nanospheres on Ti3C2@NF dual substrates for efficient urea electrolysis by ion exchange

“…Meanwhile, considering the multiple steps and intermediates in the catalytic process, it is di cult for single component catalysts to provide e cient active sites for these reactions [22] . While the construction of hybrid structures can modulate the adsorption strength of the catalyst to the intermediate and improve the electrochemical performance [23,24] . Hydroxides have been attracting the attention of the new energy community due to their a nity for alkaline electrolyte, controllable morphology, and environmental friendliness [19] .…”