Solar-assisted all-solid supercapacitors using composite nanostructures of ZnO nanowires with GO and rGO

Abstract

Solar-powered energy storage using integrated photo-supercapacitor (PSC) systems is drawing significant attention as a potential solution for the current energy problems.

Porous Carbon Template Decorated with MOF‐Driven Bimetallic Phosphide: A Suitable Heterostructure for the Production of Uninterrupted Green Hydrogen via Renewable Energy Storage Device

“…Thus, production of green fuel from water electrolysis requires continuous supply of renewable energy either directly or alternative manner. [99,100] Therefore, for the development of solar cell assisted water electrolysis to produce green hydrogen as a fuel toward fuel cell driven automobile industry required the integration of secondary renewable energy storage and supply device inline with the solar panel to compensate with the variation of solar intensity. [101] In this aspect, the solar driven supercapacitor devices are being connected to power-up the water electrolyzer for the production of uninterrupted green hydrogen, shown in the schematic of Figure 8e along with the Video S7, Supporting Information.…”

Recent Advances in Photochargeable Integrated and All-in-One Supercapacitor Devices

“…In addition, a NiO/FeCo 2 O 4 //AC asymmetric SC is assembled whose energy density is enhanced from 35.6 to 61.9 Wh kg −1 at a power density of 1.5 kW kg −1 under visible Recently, composite materials based on defective ZnO and carbon structures were explored for their potential applications in the PSC field. 54,151,168 These composites own good light absorption properties so that they form light-generated electron−hole pairs, which increase the charge amount stored on the electrodes. Also, defect states lower the fast recombination of electrons and holes, which increases charge transport and accelerates the activity.…”

“…Recently, composite materials based on defective ZnO and carbon structures were explored for their potential applications in the PSC field. ,, These composites own good light absorption properties so that they form light-generated electron–hole pairs, which increase the charge amount stored on the electrodes. Also, defect states lower the fast recombination of electrons and holes, which increases charge transport and accelerates the activity. , The photoelectrochemical properties of these composite materials benefit from the specific defects of ZnO (vacancy and interstitial), carbonaceous materials, and 2D defects.…”

Optimized V‐Doped Defective TiO2/α‐(Fe2O3)1‐x(Cr2O3)x Heterojunctions for Photo‐Assisted Supercapacitor Devices: Insights on the Materials Integrity and Dual Conversion‐Storage Mechanism

“…Although ZnO is an attractive, environmentally compatible material, its absorption is limited to the UV region of the light spectrum. [13][14][15] Nevertheless, it seems like an uphill struggle to fabricate cheap photo-capacitive material that absorbs in the visible region of the light spectrum, which represents ≈43.9% of the solar spectrum energy. [12] Fortunately, Fe 2 O 3 and Cr 2 O 3 are abundant transition metal oxides with promising activity toward photoelectrochemical water splitting and possess batterylike storage performance.…”