Morphology-controlled nickel oxide nanostructures: unlocking high-performance supercapacitor applications
Nickel oxide (NiO) has garnered significant attention as a high-performance electrode material for energy storage devices due to its excellent electrochemical activity and high theoretical capacity. In this study, well crystalline cubic structure NiO with diverse morphologies-three-dimensional spher...
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Elsevier
2025-06-01
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| Series: | Chemical Physics Impact |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667022425000751 |
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| author | Govindhasamy Murugadoss Narthana Kandhasamy Irina V. Zaporotskova Nachimuthu Venkatesh Sunitha Salla Sakthivel Pandurengan |
| author_facet | Govindhasamy Murugadoss Narthana Kandhasamy Irina V. Zaporotskova Nachimuthu Venkatesh Sunitha Salla Sakthivel Pandurengan |
| author_sort | Govindhasamy Murugadoss |
| collection | DOAJ |
| description | Nickel oxide (NiO) has garnered significant attention as a high-performance electrode material for energy storage devices due to its excellent electrochemical activity and high theoretical capacity. In this study, well crystalline cubic structure NiO with diverse morphologies-three-dimensional spherical (NiO-3D-S), two-dimensional sheet-like structure (NiO-2D), and three-dimensional asymmetric structure (NiO-3D-A) were synthesized via a simple hydrothermal method. The surface morphology was effectively tailored using polyvinylpyrrolidone (PVP) in combination with various surfactants, including ethylene glycol (EG), cetyltrimethylammonium bromide (CTAB), and glycerol. Among the synthesized structures, the 2D sheet-like porous NiO (NiO-2D) exhibited superior electrochemical performance, achieving a high specific capacitance of 853.17 F g⁻¹ at a current density of 1 mA g⁻¹. It also demonstrated excellent cycling stability, retaining approximately 92 % of its initial capacitance after 3000 charge–discharge cycles. This enhanced performance is attributed to its unique porous architecture composed of ultra-fine grains self-assembled into uniform 2D sheets, which facilitate rapid ion diffusion and efficient charge transport. To evaluate practical applicability, an asymmetric two-electrode device was fabricated using NiO-2D as the positive electrode. The device delivered an energy density of 3.2 Wh kg⁻¹ and a power density of 360 W kg⁻¹, and successfully powered a red light-emitting diode (LED), demonstrating its potential for real-world applications. These findings underscore the promise of 2D sheet-like porous NiO as an advanced electrode material for high-performance and durable electrochemical energy storage systems. |
| format | Article |
| id | doaj-art-23b3a0f403c1446b9f2c9ca51994e89d |
| institution | OA Journals |
| issn | 2667-0224 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Physics Impact |
| spelling | doaj-art-23b3a0f403c1446b9f2c9ca51994e89d2025-08-20T02:07:40ZengElsevierChemical Physics Impact2667-02242025-06-011010088810.1016/j.chphi.2025.100888Morphology-controlled nickel oxide nanostructures: unlocking high-performance supercapacitor applicationsGovindhasamy Murugadoss0Narthana Kandhasamy1Irina V. Zaporotskova2Nachimuthu Venkatesh3Sunitha Salla4Sakthivel Pandurengan5Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai, 600 119, Tamil Nadu, India; Corresponding authors.Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai, 600 119, Tamil Nadu, IndiaFederal State Educational Institution of Higher Education ''Volgograd State University'', ave. Universitetskiy, 100, Volgograd, Volgograd region, 400062, RussiaCentre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai, 600 119, Tamil Nadu, IndiaDepartment of Chemistry, Sathyabama Institute of Science and Technology, Chennai, 600 119, Tamil Nadu, IndiaDepartment of Physics, Manipal University Jaipur, Jaipur, 303 007, Rajasthan, India; Corresponding authors.Nickel oxide (NiO) has garnered significant attention as a high-performance electrode material for energy storage devices due to its excellent electrochemical activity and high theoretical capacity. In this study, well crystalline cubic structure NiO with diverse morphologies-three-dimensional spherical (NiO-3D-S), two-dimensional sheet-like structure (NiO-2D), and three-dimensional asymmetric structure (NiO-3D-A) were synthesized via a simple hydrothermal method. The surface morphology was effectively tailored using polyvinylpyrrolidone (PVP) in combination with various surfactants, including ethylene glycol (EG), cetyltrimethylammonium bromide (CTAB), and glycerol. Among the synthesized structures, the 2D sheet-like porous NiO (NiO-2D) exhibited superior electrochemical performance, achieving a high specific capacitance of 853.17 F g⁻¹ at a current density of 1 mA g⁻¹. It also demonstrated excellent cycling stability, retaining approximately 92 % of its initial capacitance after 3000 charge–discharge cycles. This enhanced performance is attributed to its unique porous architecture composed of ultra-fine grains self-assembled into uniform 2D sheets, which facilitate rapid ion diffusion and efficient charge transport. To evaluate practical applicability, an asymmetric two-electrode device was fabricated using NiO-2D as the positive electrode. The device delivered an energy density of 3.2 Wh kg⁻¹ and a power density of 360 W kg⁻¹, and successfully powered a red light-emitting diode (LED), demonstrating its potential for real-world applications. These findings underscore the promise of 2D sheet-like porous NiO as an advanced electrode material for high-performance and durable electrochemical energy storage systems.http://www.sciencedirect.com/science/article/pii/S2667022425000751Surface modificationHydrothermal2d sheetSupercapacitorEnergy storage |
| spellingShingle | Govindhasamy Murugadoss Narthana Kandhasamy Irina V. Zaporotskova Nachimuthu Venkatesh Sunitha Salla Sakthivel Pandurengan Morphology-controlled nickel oxide nanostructures: unlocking high-performance supercapacitor applications Chemical Physics Impact Surface modification Hydrothermal 2d sheet Supercapacitor Energy storage |
| title | Morphology-controlled nickel oxide nanostructures: unlocking high-performance supercapacitor applications |
| title_full | Morphology-controlled nickel oxide nanostructures: unlocking high-performance supercapacitor applications |
| title_fullStr | Morphology-controlled nickel oxide nanostructures: unlocking high-performance supercapacitor applications |
| title_full_unstemmed | Morphology-controlled nickel oxide nanostructures: unlocking high-performance supercapacitor applications |
| title_short | Morphology-controlled nickel oxide nanostructures: unlocking high-performance supercapacitor applications |
| title_sort | morphology controlled nickel oxide nanostructures unlocking high performance supercapacitor applications |
| topic | Surface modification Hydrothermal 2d sheet Supercapacitor Energy storage |
| url | http://www.sciencedirect.com/science/article/pii/S2667022425000751 |
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