Non-Isothermal Decomposition as Efficient and Simple Synthesis Method of NiO/C Nanoparticles for Asymmetric Supercapacitors
A series of NiO/C nanocomposites with NiO concentrations ranging from 10 to 90 wt% was synthesized using a simple and efficient two-step method based on non-isothermal decomposition of Nickel(II) bis(acetylacetonate). X-ray diffraction (XRD) measurements of these NiO/C nanocomposites demonstrate the...
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| Format: | Article |
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MDPI AG
2021-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/1/187 |
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| author | Daria Chernysheva Ludmila Pudova Yuri Popov Nina Smirnova Olga Maslova Mathieu Allix Aydar Rakhmatullin Nikolay Leontyev Andrey Nikolaev Igor Leontyev |
| author_facet | Daria Chernysheva Ludmila Pudova Yuri Popov Nina Smirnova Olga Maslova Mathieu Allix Aydar Rakhmatullin Nikolay Leontyev Andrey Nikolaev Igor Leontyev |
| author_sort | Daria Chernysheva |
| collection | DOAJ |
| description | A series of NiO/C nanocomposites with NiO concentrations ranging from 10 to 90 wt% was synthesized using a simple and efficient two-step method based on non-isothermal decomposition of Nickel(II) bis(acetylacetonate). X-ray diffraction (XRD) measurements of these NiO/C nanocomposites demonstrate the presence of β-NiO. NiO/C nanocomposites are composed of spherical particles distributed over the carbon support surface. The average diameter of nickel oxide spheres increases with the NiO content and are estimated as 36, 50 and 205 nm for nanocomposites with 10, 50 and 80 wt% NiO concentrations, respectively. In turn, each NiO sphere contains several nickel oxide nanoparticles, whose average sizes are 7–8 nm. According to the tests performed using a three-electrode cell, specific capacitance (SC) of NiO/C nanocomposites increases from 200 to 400 F/g as the NiO content achieves a maximum of 60 wt% concentration, after which the SC decreases. The study of the NiO/C composite showing the highest SC in three- and two-electrode cells reveals that its SC remains almost unchanged while increasing the current density, and the sample demonstrates excellent cycling stability properties. Finally, NiO/C (60% NiO) composites are shown to be promising materials for charging quartz clocks with a power rating of 1.5 V (30 min). |
| first_indexed | 2024-03-09T04:56:33Z |
| format | Article |
| id | doaj.art-c89232b0c1c2435ab11093377c575107 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T04:56:33Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-c89232b0c1c2435ab11093377c5751072023-12-03T13:05:13ZengMDPI AGNanomaterials2079-49912021-01-0111118710.3390/nano11010187Non-Isothermal Decomposition as Efficient and Simple Synthesis Method of NiO/C Nanoparticles for Asymmetric SupercapacitorsDaria Chernysheva0Ludmila Pudova1Yuri Popov2Nina Smirnova3Olga Maslova4Mathieu Allix5Aydar Rakhmatullin6Nikolay Leontyev7Andrey Nikolaev8Igor Leontyev9Platov South-Russian State Polytechnic University (NPI), 346428 Novocherkassk, RussiaPlatov South-Russian State Polytechnic University (NPI), 346428 Novocherkassk, RussiaPhysics Department, Southern Federal University, 344090 Rostov-on-Don, RussiaPlatov South-Russian State Polytechnic University (NPI), 346428 Novocherkassk, RussiaInstitute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, 346428 Tomsk, RussiaCNRS, CEMHTI UPR3079, Univ. Orléans, F-45071 Orléans, FranceCNRS, CEMHTI UPR3079, Univ. Orléans, F-45071 Orléans, FranceAzov-Black Sea Engineering Institute, Don State Agrarian University, Rostov region, 347740 Zernograd, RussiaResearch and Education Center “Materials”, Don State Technical University, 344000 Rostov-on-Don, RussiaPhysics Department, Southern Federal University, 344090 Rostov-on-Don, RussiaA series of NiO/C nanocomposites with NiO concentrations ranging from 10 to 90 wt% was synthesized using a simple and efficient two-step method based on non-isothermal decomposition of Nickel(II) bis(acetylacetonate). X-ray diffraction (XRD) measurements of these NiO/C nanocomposites demonstrate the presence of β-NiO. NiO/C nanocomposites are composed of spherical particles distributed over the carbon support surface. The average diameter of nickel oxide spheres increases with the NiO content and are estimated as 36, 50 and 205 nm for nanocomposites with 10, 50 and 80 wt% NiO concentrations, respectively. In turn, each NiO sphere contains several nickel oxide nanoparticles, whose average sizes are 7–8 nm. According to the tests performed using a three-electrode cell, specific capacitance (SC) of NiO/C nanocomposites increases from 200 to 400 F/g as the NiO content achieves a maximum of 60 wt% concentration, after which the SC decreases. The study of the NiO/C composite showing the highest SC in three- and two-electrode cells reveals that its SC remains almost unchanged while increasing the current density, and the sample demonstrates excellent cycling stability properties. Finally, NiO/C (60% NiO) composites are shown to be promising materials for charging quartz clocks with a power rating of 1.5 V (30 min).https://www.mdpi.com/2079-4991/11/1/187supercapacitornickel oxideNiO/C nanocompositenon-isothermal decomposition |
| spellingShingle | Daria Chernysheva Ludmila Pudova Yuri Popov Nina Smirnova Olga Maslova Mathieu Allix Aydar Rakhmatullin Nikolay Leontyev Andrey Nikolaev Igor Leontyev Non-Isothermal Decomposition as Efficient and Simple Synthesis Method of NiO/C Nanoparticles for Asymmetric Supercapacitors Nanomaterials supercapacitor nickel oxide NiO/C nanocomposite non-isothermal decomposition |
| title | Non-Isothermal Decomposition as Efficient and Simple Synthesis Method of NiO/C Nanoparticles for Asymmetric Supercapacitors |
| title_full | Non-Isothermal Decomposition as Efficient and Simple Synthesis Method of NiO/C Nanoparticles for Asymmetric Supercapacitors |
| title_fullStr | Non-Isothermal Decomposition as Efficient and Simple Synthesis Method of NiO/C Nanoparticles for Asymmetric Supercapacitors |
| title_full_unstemmed | Non-Isothermal Decomposition as Efficient and Simple Synthesis Method of NiO/C Nanoparticles for Asymmetric Supercapacitors |
| title_short | Non-Isothermal Decomposition as Efficient and Simple Synthesis Method of NiO/C Nanoparticles for Asymmetric Supercapacitors |
| title_sort | non isothermal decomposition as efficient and simple synthesis method of nio c nanoparticles for asymmetric supercapacitors |
| topic | supercapacitor nickel oxide NiO/C nanocomposite non-isothermal decomposition |
| url | https://www.mdpi.com/2079-4991/11/1/187 |
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