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Hierarchical Design of CuO/Nickel–Cobalt–Sulfide Electrode by a Facile Two-Step Potentiostatic Deposition.
- Source :
- Micromachines; Apr2023, Vol. 14 Issue 4, p888, 14p
- Publication Year :
- 2023
-
Abstract
- Herein, a scalable electrodeposition strategy is proposed to achieve hierarchical CuO/nickel–cobalt–sulfide (NCS) electrodes using two-step potentiostatic deposition followed by high-temperature calcination. The introduction of CuO provides support for the further deposition of NSC to ensure a high load of active electrode materials, thus generating more abundant active electrochemical sites. Meanwhile, dense deposited NSC nanosheets are connected to each other to form many chambers. Such a hierarchical electrode prompts a smooth and orderly transmission channel for electron transport, and reserves space for possible volume expansion during the electrochemical test process. As a result, the CuO/NCS electrode exhibits superior specific capacitance (Cs) of 4.26 F cm<superscript>−2</superscript> at 20 mA cm<superscript>−2</superscript> and remarkable coulombic efficiency of 96.37%. Furthermore, the cycle stability of the CuO/NCS electrode remains at 83.05% within 5000 cycles. The multistep electrodeposition strategy provides a basis and reference for the rational design of hierarchical electrodes to be applied in the field of energy storage. [ABSTRACT FROM AUTHOR]
- Subjects :
- ELECTRODES
ELECTRON transport
ENERGY storage
COPPER oxide
NANOSTRUCTURED materials
Subjects
Details
- Language :
- English
- ISSN :
- 2072666X
- Volume :
- 14
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Micromachines
- Publication Type :
- Academic Journal
- Accession number :
- 163434680
- Full Text :
- https://doi.org/10.3390/mi14040888