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Crystals 2019, 9(2), 118;

Hierarchical Core/Shell Structured [email protected](OH)2 Nanospheres as Binder-Free Electrodes for High Performance Supercapacitors

Jilin Provincial Key Laboratory of Architectural Electricity & Comprehensive Energy Saving, School of Electrical Engineering and Computer, Jilin Jianzhu University, Changchun 130118, China
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Received: 27 January 2019 / Revised: 17 February 2019 / Accepted: 21 February 2019 / Published: 24 February 2019
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Hierarchical [email protected](OH)2 nanospheres were achieved directly on copper foam substrate through a convenient two-step process. Ag nanoflowers were formed on copper substrate by galvanic replacement technology between AgNO3 and copper foam followed by electrodeposition of a layer of Ni(OH)2. Ag nanostructures as cores not only dominated the final morphology of the composites, but also improved the electrical conductivity, increased the specific surface area of the active electrode material, and even directly participated in the electrochemical reactions. The resulted [email protected](OH)2 nanospheres could be directly used as high-performance binder-free electrodes and exhibited enhanced electrochemical performance with a high specific capacitance of 1.864 F cm−2 and long cycling lifespans of 90.43% capacity retaining after 3000 cycles. View Full-Text
Keywords: electrodeposition; [email protected](OH)2 nanospheres; electrode material; supercapacitor electrodeposition; [email protected](OH)2 nanospheres; electrode material; supercapacitor

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Lv, S.; Chu, X.; Yang, F.; Wang, H.; Yang, J.; Chi, Y.; Yang, X. Hierarchical Core/Shell Structured [email protected](OH)2 Nanospheres as Binder-Free Electrodes for High Performance Supercapacitors. Crystals 2019, 9, 118.

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