Synthesis of Ni<sub>3</sub>S<sub>2</sub> and MOF-Derived Ni(OH)<sub>2</sub> Composite Electrode Materials on Ni Foam for High-Performance Supercapacitors
Honeycomb-like Ni(OH)<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub>/Ni foam (NF) was fabricated via a two-step hydrothermal process and subsequent alkalization. Ni<sub>3</sub>S<sub>2</sub> with a honeycombed structure was in-situ synthesized on t...
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MDPI AG
2023-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/3/493 |
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| author | Meng Shao Jun Li Jing Li Yanan Yan Ruoliu Li |
| author_facet | Meng Shao Jun Li Jing Li Yanan Yan Ruoliu Li |
| author_sort | Meng Shao |
| collection | DOAJ |
| description | Honeycomb-like Ni(OH)<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub>/Ni foam (NF) was fabricated via a two-step hydrothermal process and subsequent alkalization. Ni<sub>3</sub>S<sub>2</sub> with a honeycombed structure was in-situ synthesized on the NF surface by a hydrothermal process. MOF-derived Ni(OH)<sub>2</sub> nanosheets were then successfully grown on the Ni<sub>3</sub>S<sub>2</sub>/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)<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub>/NF exhibited a high specific capacitance (2207 F·g<sup>−1</sup> at 1 A·g<sup>−1</sup>, 1929.7 F·g<sup>−1</sup> at 5 mV·s<sup>−1</sup>) and a remarkable rate capability and cycling stability, with 62.3% of the initial value (1 A·g<sup>−1</sup>) retained at 10 A·g<sup>−1</sup> and 90.4% of the initial value (first circle at 50 mV·s<sup>−1</sup>) retained after 5000 cycles. A hybrid supercapacitor (HSC) was assembled with Ni(OH)<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub>/NF as the positive electrode and activated carbon (AC) as the negative electrode and exhibited an outstanding energy density of 24.5 Wh·kg<sup>−1</sup> at the power density of 375 W·kg<sup>−1</sup>. These encouraging results render the electrode a potential candidate for energy storage. |
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| language | English |
| last_indexed | 2024-03-11T09:31:06Z |
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| spelling | doaj.art-24039848089c474c95c170ab732c89b22023-11-16T17:35:32ZengMDPI AGNanomaterials2079-49912023-01-0113349310.3390/nano13030493Synthesis of Ni<sub>3</sub>S<sub>2</sub> and MOF-Derived Ni(OH)<sub>2</sub> Composite Electrode Materials on Ni Foam for High-Performance SupercapacitorsMeng Shao0Jun Li1Jing Li2Yanan Yan3Ruoliu Li4School of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaSchool of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaSchool of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaSchool of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaSchool of Materials Science and Engineering, Shanghai University of Engineering Science, Shanghai 201620, ChinaHoneycomb-like Ni(OH)<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub>/Ni foam (NF) was fabricated via a two-step hydrothermal process and subsequent alkalization. Ni<sub>3</sub>S<sub>2</sub> with a honeycombed structure was in-situ synthesized on the NF surface by a hydrothermal process. MOF-derived Ni(OH)<sub>2</sub> nanosheets were then successfully grown on the Ni<sub>3</sub>S<sub>2</sub>/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)<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub>/NF exhibited a high specific capacitance (2207 F·g<sup>−1</sup> at 1 A·g<sup>−1</sup>, 1929.7 F·g<sup>−1</sup> at 5 mV·s<sup>−1</sup>) and a remarkable rate capability and cycling stability, with 62.3% of the initial value (1 A·g<sup>−1</sup>) retained at 10 A·g<sup>−1</sup> and 90.4% of the initial value (first circle at 50 mV·s<sup>−1</sup>) retained after 5000 cycles. A hybrid supercapacitor (HSC) was assembled with Ni(OH)<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub>/NF as the positive electrode and activated carbon (AC) as the negative electrode and exhibited an outstanding energy density of 24.5 Wh·kg<sup>−1</sup> at the power density of 375 W·kg<sup>−1</sup>. These encouraging results render the electrode a potential candidate for energy storage.https://www.mdpi.com/2079-4991/13/3/493Ni(OH)<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub>/NFhoneycomb-like structuretwo-step hydrothermalalkalizationMOF-derived Ni(OH)<sub>2</sub>supercapacitor |
| spellingShingle | Meng Shao Jun Li Jing Li Yanan Yan Ruoliu Li Synthesis of Ni<sub>3</sub>S<sub>2</sub> and MOF-Derived Ni(OH)<sub>2</sub> Composite Electrode Materials on Ni Foam for High-Performance Supercapacitors Nanomaterials Ni(OH)<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub>/NF honeycomb-like structure two-step hydrothermal alkalization MOF-derived Ni(OH)<sub>2</sub> supercapacitor |
| title | Synthesis of Ni<sub>3</sub>S<sub>2</sub> and MOF-Derived Ni(OH)<sub>2</sub> Composite Electrode Materials on Ni Foam for High-Performance Supercapacitors |
| title_full | Synthesis of Ni<sub>3</sub>S<sub>2</sub> and MOF-Derived Ni(OH)<sub>2</sub> Composite Electrode Materials on Ni Foam for High-Performance Supercapacitors |
| title_fullStr | Synthesis of Ni<sub>3</sub>S<sub>2</sub> and MOF-Derived Ni(OH)<sub>2</sub> Composite Electrode Materials on Ni Foam for High-Performance Supercapacitors |
| title_full_unstemmed | Synthesis of Ni<sub>3</sub>S<sub>2</sub> and MOF-Derived Ni(OH)<sub>2</sub> Composite Electrode Materials on Ni Foam for High-Performance Supercapacitors |
| title_short | Synthesis of Ni<sub>3</sub>S<sub>2</sub> and MOF-Derived Ni(OH)<sub>2</sub> Composite Electrode Materials on Ni Foam for High-Performance Supercapacitors |
| title_sort | synthesis of ni sub 3 sub s sub 2 sub and mof derived ni oh sub 2 sub composite electrode materials on ni foam for high performance supercapacitors |
| topic | Ni(OH)<sub>2</sub>/Ni<sub>3</sub>S<sub>2</sub>/NF honeycomb-like structure two-step hydrothermal alkalization MOF-derived Ni(OH)<sub>2</sub> supercapacitor |
| url | https://www.mdpi.com/2079-4991/13/3/493 |
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