期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 10, 期 29, 页码 10748-10758出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2tc02114e
关键词
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资金
- SONATA BIS project [2020/38/E/ST5/00176]
- Norway Grants 2014-2021 [29/2020]
This study presents the design of a facile, efficient, and low-cost two-electrode all-solid-state PSC using GO/ZnO NW material. The GO/ZnO NW-based PSC exhibits higher specific capacitance and energy density under UV illumination, as well as excellent stability. The proposed device configuration shows superior performance compared to the rGO/ZnO NW-based PSC.
Solar-powered energy storage using integrated photo-supercapacitor (PSC) systems is drawing significant attention as a potential solution for the current energy problems. This work intends to prepare a facile, efficient, and low-cost two-electrode configuration all-solid-state PSC having zinc oxide nanowire (ZnO NW) composites with graphene oxide (GO) and reduced graphene oxide (rGO) as a remedy for the complexity and high-cost of the present PSC devices. The specific capacitance (C-p) and energy density of the GO/ZnO NW-based PSC increased 3.2 and 1.9 (@56 mA g(-1)) times under UV illumination, respectively. Furthermore, the GO/ZnO NW-based PSC showed excellent stability for 5000 cycles with 100% capacitance retention and Coulombic efficiency. The superior performance and excellent stability due to the charge trap properties for the GO/ZnO NW-based PSC as compared to rGO/ZnO NW-based PSC have been confirmed using open circuit potential (V-OC) and low-temperature electron paramagnetic resonance (EPR) spectroscopy under UV on/off conditions. Hence, it has been concluded that GO/ZnO NW material and the proposed device configuration in this work are very favourable for future electronic applications.
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