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Synthesis of Ni3S2 and MOF-Derived Ni(OH)2 Composite Electrode Materials on Ni Foam for High-Performance Supercapacitors.
| Content Provider | Europe PMC |
|---|---|
| Author | Shao, Meng Li, Jun Li, Jing Yan, Yanan Li, Ruoliu |
| Editor | Pirri, Fabrizio |
| Copyright Year | 2023 |
| Abstract | Honeycomb-like Ni(OH)2/Ni3S2/Ni foam (NF) was fabricated via a two-step hydrothermal process and subsequent alkalization. Ni3S2 with a honeycombed structure was in-situ synthesized on the NF surface by a hydrothermal process. MOF-derived Ni(OH)2 nanosheets were then successfully grown on the Ni3S2/NF surface by a second hydrothermal process and alkaline treatment, and a large number of nanosheets were interconnected to form a typical honeycomb-like structure with a large specific surface area and porosity. As a binder-free electrode, the prepared honeycomb-like Ni(OH)2/Ni3S2/NF exhibited a high specific capacitance (2207 F·g−1 at 1 A·g−1, 1929.7 F·g−1 at 5 mV·s−1) and a remarkable rate capability and cycling stability, with 62.3% of the initial value (1 A·g−1) retained at 10 A·g−1 and 90.4% of the initial value (first circle at 50 mV·s−1) retained after 5000 cycles. A hybrid supercapacitor (HSC) was assembled with Ni(OH)2/Ni3S2/NF as the positive electrode and activated carbon (AC) as the negative electrode and exhibited an outstanding energy density of 24.5 Wh·kg−1 at the power density of 375 W·kg−1. These encouraging results render the electrode a potential candidate for energy storage. |
| Journal | Nanomaterials (Basel, Switzerland) |
| Volume Number | 13 |
| PubMed Central reference number | PMC9921658 |
| Issue Number | 3 |
| PubMed reference number | 36770454 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano13030493 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2023-01-26 |
| Access Restriction | Open |
| Rights License | Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2023 by the authors. |
| Subject Keyword | Ni(OH)2/Ni3S2/NF honeycomb-like structure two-step hydrothermal alkalization MOF-derived Ni(OH)2 supercapacitor |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemical Engineering Materials Science |
