Development of Binder Free Interconnected 3D Flower of NiZn<sub>2</sub>O<sub>4</sub> as an Advanced Electrode Materials for Supercapacitor Applications
The design and development of electrode materials for energy-storage applications is an area of prime focus around the globe because of the shortage of natural resources. In this study, we developed a method for preparing a novel three-dimensional binder-free pseudocapacitive NiZn<sub>2</su...
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MDPI AG
2021-12-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/1/14 |
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| author | Sajid Ali Ansari Nazish Parveen Mohd Al Saleh Al-Othoum Mohammad Omaish Ansari |
| author_facet | Sajid Ali Ansari Nazish Parveen Mohd Al Saleh Al-Othoum Mohammad Omaish Ansari |
| author_sort | Sajid Ali Ansari |
| collection | DOAJ |
| description | The design and development of electrode materials for energy-storage applications is an area of prime focus around the globe because of the shortage of natural resources. In this study, we developed a method for preparing a novel three-dimensional binder-free pseudocapacitive NiZn<sub>2</sub>O<sub>4</sub> active material, which was grown directly over nickel foam (NiZn<sub>2</sub>O<sub>4</sub>@3D-NF), using a simple one-step hydrothermal process. The material was characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy techniques were employed to evaluate the pseudocapacitive performance of the NiZn<sub>2</sub>O<sub>4</sub> active material in a three-electrode assembly cell. The prepared NiZn<sub>2</sub>O<sub>4</sub>@3D-NF electrode exhibited an excellent specific capacitance, of 1706.25 F/g, compared to that of the NiO@3D-NF (1050 F/g) electrode because it has the bimetallic characteristics of both zinc and nickel. The NiZn<sub>2</sub>O<sub>4</sub>@3D-NF electrode showed better cyclic stability (87.5% retention) compared to the NiO@3D-NF electrode (80% retention) after 5000 cycles at a fixed current density, which also supports the durability of the NiZn<sub>2</sub>O<sub>4</sub>@3D-NF electrode. The characteristics of NiZn<sub>2</sub>O<sub>4</sub>@3D-NF include corrosion resistance, high conductivity, an abundance of active sites for electrochemical reaction, a high surface area, and synergism between the bimetallic oxides, which make it a suitable candidate for potential application in the field of energy storage. |
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| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T01:41:41Z |
| publishDate | 2021-12-01 |
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| record_format | Article |
| series | Crystals |
| spelling | doaj.art-badd2d09f1c146cfac678ae522eae9a62023-11-23T13:23:46ZengMDPI AGCrystals2073-43522021-12-011211410.3390/cryst12010014Development of Binder Free Interconnected 3D Flower of NiZn<sub>2</sub>O<sub>4</sub> as an Advanced Electrode Materials for Supercapacitor ApplicationsSajid Ali Ansari0Nazish Parveen1Mohd Al Saleh Al-Othoum2Mohammad Omaish Ansari3Department of Physics, College of Science, King Faisal University, P.O. Box 400, Hofuf, Al-Ahsa 31982, Saudi ArabiaDepartment of Chemistry, College of Science, King Faisal University, P.O. Box 380, Hofuf, Al-Ahsa 31982, Saudi ArabiaDepartment of Physics, College of Science, King Faisal University, P.O. Box 400, Hofuf, Al-Ahsa 31982, Saudi ArabiaCenter of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi ArabiaThe design and development of electrode materials for energy-storage applications is an area of prime focus around the globe because of the shortage of natural resources. In this study, we developed a method for preparing a novel three-dimensional binder-free pseudocapacitive NiZn<sub>2</sub>O<sub>4</sub> active material, which was grown directly over nickel foam (NiZn<sub>2</sub>O<sub>4</sub>@3D-NF), using a simple one-step hydrothermal process. The material was characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy techniques were employed to evaluate the pseudocapacitive performance of the NiZn<sub>2</sub>O<sub>4</sub> active material in a three-electrode assembly cell. The prepared NiZn<sub>2</sub>O<sub>4</sub>@3D-NF electrode exhibited an excellent specific capacitance, of 1706.25 F/g, compared to that of the NiO@3D-NF (1050 F/g) electrode because it has the bimetallic characteristics of both zinc and nickel. The NiZn<sub>2</sub>O<sub>4</sub>@3D-NF electrode showed better cyclic stability (87.5% retention) compared to the NiO@3D-NF electrode (80% retention) after 5000 cycles at a fixed current density, which also supports the durability of the NiZn<sub>2</sub>O<sub>4</sub>@3D-NF electrode. The characteristics of NiZn<sub>2</sub>O<sub>4</sub>@3D-NF include corrosion resistance, high conductivity, an abundance of active sites for electrochemical reaction, a high surface area, and synergism between the bimetallic oxides, which make it a suitable candidate for potential application in the field of energy storage.https://www.mdpi.com/2073-4352/12/1/14energy storagebimetallic oxidessupercapacitorelectrodesthree-dimensional |
| spellingShingle | Sajid Ali Ansari Nazish Parveen Mohd Al Saleh Al-Othoum Mohammad Omaish Ansari Development of Binder Free Interconnected 3D Flower of NiZn<sub>2</sub>O<sub>4</sub> as an Advanced Electrode Materials for Supercapacitor Applications Crystals energy storage bimetallic oxides supercapacitor electrodes three-dimensional |
| title | Development of Binder Free Interconnected 3D Flower of NiZn<sub>2</sub>O<sub>4</sub> as an Advanced Electrode Materials for Supercapacitor Applications |
| title_full | Development of Binder Free Interconnected 3D Flower of NiZn<sub>2</sub>O<sub>4</sub> as an Advanced Electrode Materials for Supercapacitor Applications |
| title_fullStr | Development of Binder Free Interconnected 3D Flower of NiZn<sub>2</sub>O<sub>4</sub> as an Advanced Electrode Materials for Supercapacitor Applications |
| title_full_unstemmed | Development of Binder Free Interconnected 3D Flower of NiZn<sub>2</sub>O<sub>4</sub> as an Advanced Electrode Materials for Supercapacitor Applications |
| title_short | Development of Binder Free Interconnected 3D Flower of NiZn<sub>2</sub>O<sub>4</sub> as an Advanced Electrode Materials for Supercapacitor Applications |
| title_sort | development of binder free interconnected 3d flower of nizn sub 2 sub o sub 4 sub as an advanced electrode materials for supercapacitor applications |
| topic | energy storage bimetallic oxides supercapacitor electrodes three-dimensional |
| url | https://www.mdpi.com/2073-4352/12/1/14 |
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