Achieving Self-Supported Hierarchical Cu(OH)<sub>2</sub>/Nickel–Cobalt Sulfide Electrode for Electrochemical Energy Storage

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

doi:10.3390/mi14010125

Micromachines (Jan 2023)

Achieving Self-Supported Hierarchical Cu(OH)<sub>2</sub>/Nickel–Cobalt Sulfide Electrode for Electrochemical Energy Storage

Sa Lv,
Wenshi Shang,
Yaodan Chi,
Huan Wang,
Xuefeng Chu,
Boqi Wu,
Peiyu Geng,
Chao Wang,
Jia Yang,
Zhifei Cheng,
Xiaotian Yang

Affiliations

Sa Lv: Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
Wenshi Shang: Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
Yaodan Chi: Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
Huan Wang: Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
Xuefeng Chu: Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
Boqi Wu: Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
Peiyu Geng: Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
Chao Wang: Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
Jia Yang: Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
Zhifei Cheng: Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
Xiaotian Yang: Key Laboratory for Comprehensive Energy Saving of Cold Regions Architecture of Ministry of Education, Jilin Jianzhu University, Changchun 130118, China

DOI: https://doi.org/10.3390/mi14010125
Journal volume & issue: Vol. 14, no. 1
p. 125

Abstract

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Herein, nickel–cobalt sulfide (NCS) nanoflakes covering the surface of Cu(OH)2 nanorods were achieved by a facile two-step electrodeposition strategy. The effect of CH4N2S concentration on formation mechanism and electrochemical behavior is investigated and optimized. Thanks to the synergistic effect of the selected composite components, the Cu(OH)2/NCS composite electrode can deliver a high areal specific capacitance (Cs) of 7.80 F cm−2 at 2 mA cm−2 and sustain 5.74 F cm−2 at 40 mA cm−2. In addition, coulombic efficiency was up to 84.30% and cyclic stability remained 82.93% within 5000 cycles at 40 mA cm−2. This innovative work provides an effective strategy for the design and construction of hierarchical composite electrodes for the development of energy storage devices.

Published in Micromachines

ISSN: 2072-666X (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mechanical engineering and machinery
Website: https://www.mdpi.com/journal/micromachines

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