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

Sa Lv; Wenshi Shang; Huan Wang; Xuefeng Chu; Yaodan Chi; Chao Wang; Jia Yang; Peiyu Geng; Xiaotian Yang

doi:10.3390/mi13020237

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

Micromachines (Basel). 2022 Jan 30;13(2):237. doi: 10.3390/mi13020237.

Authors

Sa Lv¹, Wenshi Shang¹, Huan Wang¹, Xuefeng Chu¹, Yaodan Chi¹, Chao Wang¹, Jia Yang¹, Peiyu Geng¹, Xiaotian Yang¹

Affiliation

¹ Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Provincial Key Laboratory of Architectural Electricity & Comprehensive Energy Saving, Jilin Jianzhu University, Changchun 130118, China.

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).

Keywords: Cu foam; Cu(OH)2; Ni3S2; electrode material; electrodeposition.

Abstract

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