Altaf, Cigdem Tuc and Colak, Tuluhan Olcayto and Rostas, Arpad Mihai and Socaci, Crina and Lazar, Mihaela Diana and Tudoran, Lucian Barbu and Aleinawi, Mohamad and Bakan Mısırlıoğlu, Feray and Yıldırım, İpek Deniz and Erdem, Emre and Sankir, Nurdan Demirci and Sankir, Mehmet (2024) Zinc oxide nanoflake/reduced graphene oxide nanocomposite-based dual-acting electrodes for solar-assisted supercapacitor applications. Energy Advances . ISSN 2753-1457 Published Online First https://dx.doi.org/10.1039/d4ya00253a
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Official URL: https://dx.doi.org/10.1039/d4ya00253a
Abstract
There is an ever-growing requirement for systems that enable both conversion and storage of solar energy in the same device, thereby reducing the need for grid electricity and fossil fuels. Although photo-supercapacitors (PSCs) potentially meet this requirement, it is essential to develop high-performance devices in which conversion and storage can be achieved on the same electrode. This study investigated two-electrode PSC systems based on three-dimensional (3D) zinc oxide (ZnO) nanoflakes/reduced graphene oxide (rGO) nanocomposites to meet the need for in situ solar energy conversion/storage. To better understand the effect of rGO and 3D ZnO nanoflakes separately, three different compositions have been studied, in which the weight percent of rGO changes from 8 to 32%. The energy density increases as the amount of rGO increases, but the composite material loses its light sensitivity above a critical value. Therefore, the electrodes containing 16% rGO exhibited higher performance than those containing 32% and 8% rGO. As a result, the (16%) rGO/ZnO-based PSC exhibited superior performance compared to the other samples, with its ability to maintain 100% of its performance at 40 000 cycles, its areal capacitance of 40 mF cm−2 and energy density values of 22 μW h cm−2, which were 170% higher than under dark condition measurements.
Item Type: | Article |
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Divisions: | Faculty of Engineering and Natural Sciences Sabancı University Nanotechnology Research and Application Center |
Depositing User: | Emre Erdem |
Date Deposited: | 08 Aug 2024 15:36 |
Last Modified: | 08 Aug 2024 15:36 |
URI: | https://research.sabanciuniv.edu/id/eprint/49593 |