Facile preparation of Ni(OH)2-B/S composite with an embroidered spherical nanosheet structure for high-performance supercapacitors
The development of efficient electrode materials doped with transition metal oxides to produce supercapacitors is currently an intensely studied research topic. Therefore, in our study, we developed a simple, easy, fast, and convenient method for producing a Ni(OH)2-B/S composite with an embroidered...
Gespeichert in:
Veröffentlicht in: | Journal of energy storage 2022-06, Vol.50, p.104616, Article 104616 |
---|---|
Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The development of efficient electrode materials doped with transition metal oxides to produce supercapacitors is currently an intensely studied research topic. Therefore, in our study, we developed a simple, easy, fast, and convenient method for producing a Ni(OH)2-B/S composite with an embroidered spherical nanosheet structure and promising potential for application to supercapacitor fabrication. Ni(NO3)2∙6H2O was used as the raw material and Na2B4O7∙10H2O as a boron source to obtain Ni(OH)2-B powder through a hydrothermal reaction followed by sulfurization and stirring. The obtained Ni(OH)2-B/S composite had a high specific capacitance (1550 F g−1 at 1 A g−1) and excellent cycling stability (71.4% capacity after 10,000 cycles). The energy storage device of an automatic sequencing charger fabricated using the composite and activated carbon as the positive and negative electrodes, respectively, exhibited a high specific energy of 60.5 W h kg−1, specific power of 825 W kg−1, and capacity retention of 78.3% (after 5000 cycles at 8 A g−1). The proposed composite fabrication method is expected to contribute to innovative electrode design for high-capacity supercapacitors.
•Simple, fast, safe method for producing Ni(OH)2-B/S composite for supercapacitors•Ni(NO3)2∙6H2O raw material + Na2B4O7∙10H2O boron source → Ni(OH)2-B powder•High specific capacitance and excellent cycling stability•Used as positive electrode of energy storage device of automatic sequencing charger•Specific Energy: 60.5 Wh kg−1, specific power: 825 W kg−1, capacity retention: 78.3% |
---|---|
ISSN: | 2352-152X 2352-1538 |
DOI: | 10.1016/j.est.2022.104616 |