Ceramic Ti/TiO<sub>2</sub>/AuNP Film with 1-D Nanostructures for Selfstanding Supercapacitor Electrodes
Herein we have fabricated AuTiO<sub>2</sub> from a one-dimensional (1D) nanocomposite by the simple oxidation method of the Ti sheet for supercapacitor applications. We intended on fabricating a microlayer extended into the sheet body to form a selfstanding electrode. Raman spectra and X...
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MDPI AG
2022-05-01
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| author | Nagih M. Shaalan Faheem Ahmed Mohamed Rashad Shalendra Kumar Osama Saber Abdullah F. Al-Naim Hicham M. Kotb Mohammed Ezzeldien Amera Z. Mahmoud |
| author_facet | Nagih M. Shaalan Faheem Ahmed Mohamed Rashad Shalendra Kumar Osama Saber Abdullah F. Al-Naim Hicham M. Kotb Mohammed Ezzeldien Amera Z. Mahmoud |
| author_sort | Nagih M. Shaalan |
| collection | DOAJ |
| description | Herein we have fabricated AuTiO<sub>2</sub> from a one-dimensional (1D) nanocomposite by the simple oxidation method of the Ti sheet for supercapacitor applications. We intended on fabricating a microlayer extended into the sheet body to form a selfstanding electrode. Raman spectra and XRD patterns confirmed the formation of the rutile phase of the TiO<sub>2</sub> bulk, and FESEM confirmed the growth of the 1D nanostructure made of Au/TiO<sub>2</sub>, where the Au nanoparticles reside on the tip of the TiO<sub>2</sub> nanorods. The growth of 1D TiO<sub>2</sub> by this method is supported by a growth mechanism during the oxidation process. Three electrodes were fabricated based on pure and doped TiO<sub>2</sub>. These electrodes were used as a selfstanding supercapacitor electrode. The Au-doped TiO<sub>2</sub> exhibited a great improvement in the electrochemical performance at low Au concentrations, whereas the excessive Au concentration on the TiO<sub>2</sub> surface exhibited a negative effect on the capacitance value. The highest areal capacitance of 72 mFcm<sup>−2</sup> at a current density of 5 µAcm<sup>−2</sup> was recorded for TiO<sub>2</sub> doped with a low Au concentration. The mechanism of the electrochemical reaction was proposed based on Nyquist and Bode plots. The obtained results point out that the effect of Au on the TiO<sub>2</sub> surface makes Au/TiO<sub>2</sub> ceramic electrodes a promising material as selfstanding energy storage electrodes. |
| first_indexed | 2024-03-10T00:03:04Z |
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| language | English |
| last_indexed | 2024-03-10T00:03:04Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-389fdcd81c854bada5a411b52dfe42632023-11-23T16:11:55ZengMDPI AGCrystals2073-43522022-05-0112679110.3390/cryst12060791Ceramic Ti/TiO<sub>2</sub>/AuNP Film with 1-D Nanostructures for Selfstanding Supercapacitor ElectrodesNagih M. Shaalan0Faheem Ahmed1Mohamed Rashad2Shalendra Kumar3Osama Saber4Abdullah F. Al-Naim5Hicham M. Kotb6Mohammed Ezzeldien7Amera Z. Mahmoud8Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi ArabiaDepartment of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi ArabiaPhysics Department, Faculty of Science, Assiut University, Assiut 71516, EgyptDepartment of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi ArabiaDepartment of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi ArabiaDepartment of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi ArabiaDepartment of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi ArabiaDepartment of Physics, College of Science, Jouf University, Al-Jouf, Sakaka 72388, Saudi ArabiaPhysics Department, Faculty of Science, Assiut University, Assiut 71516, EgyptHerein we have fabricated AuTiO<sub>2</sub> from a one-dimensional (1D) nanocomposite by the simple oxidation method of the Ti sheet for supercapacitor applications. We intended on fabricating a microlayer extended into the sheet body to form a selfstanding electrode. Raman spectra and XRD patterns confirmed the formation of the rutile phase of the TiO<sub>2</sub> bulk, and FESEM confirmed the growth of the 1D nanostructure made of Au/TiO<sub>2</sub>, where the Au nanoparticles reside on the tip of the TiO<sub>2</sub> nanorods. The growth of 1D TiO<sub>2</sub> by this method is supported by a growth mechanism during the oxidation process. Three electrodes were fabricated based on pure and doped TiO<sub>2</sub>. These electrodes were used as a selfstanding supercapacitor electrode. The Au-doped TiO<sub>2</sub> exhibited a great improvement in the electrochemical performance at low Au concentrations, whereas the excessive Au concentration on the TiO<sub>2</sub> surface exhibited a negative effect on the capacitance value. The highest areal capacitance of 72 mFcm<sup>−2</sup> at a current density of 5 µAcm<sup>−2</sup> was recorded for TiO<sub>2</sub> doped with a low Au concentration. The mechanism of the electrochemical reaction was proposed based on Nyquist and Bode plots. The obtained results point out that the effect of Au on the TiO<sub>2</sub> surface makes Au/TiO<sub>2</sub> ceramic electrodes a promising material as selfstanding energy storage electrodes.https://www.mdpi.com/2073-4352/12/6/7911D nanostructuresAu-doped TiO<sub>2</sub>thin-film supercapacitorceramic nanostructuresstandalone nanostructured electrodes |
| spellingShingle | Nagih M. Shaalan Faheem Ahmed Mohamed Rashad Shalendra Kumar Osama Saber Abdullah F. Al-Naim Hicham M. Kotb Mohammed Ezzeldien Amera Z. Mahmoud Ceramic Ti/TiO<sub>2</sub>/AuNP Film with 1-D Nanostructures for Selfstanding Supercapacitor Electrodes Crystals 1D nanostructures Au-doped TiO<sub>2</sub> thin-film supercapacitor ceramic nanostructures standalone nanostructured electrodes |
| title | Ceramic Ti/TiO<sub>2</sub>/AuNP Film with 1-D Nanostructures for Selfstanding Supercapacitor Electrodes |
| title_full | Ceramic Ti/TiO<sub>2</sub>/AuNP Film with 1-D Nanostructures for Selfstanding Supercapacitor Electrodes |
| title_fullStr | Ceramic Ti/TiO<sub>2</sub>/AuNP Film with 1-D Nanostructures for Selfstanding Supercapacitor Electrodes |
| title_full_unstemmed | Ceramic Ti/TiO<sub>2</sub>/AuNP Film with 1-D Nanostructures for Selfstanding Supercapacitor Electrodes |
| title_short | Ceramic Ti/TiO<sub>2</sub>/AuNP Film with 1-D Nanostructures for Selfstanding Supercapacitor Electrodes |
| title_sort | ceramic ti tio sub 2 sub aunp film with 1 d nanostructures for selfstanding supercapacitor electrodes |
| topic | 1D nanostructures Au-doped TiO<sub>2</sub> thin-film supercapacitor ceramic nanostructures standalone nanostructured electrodes |
| url | https://www.mdpi.com/2073-4352/12/6/791 |
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