Photo-powered integrated supercapacitors: a review on recent developments, challenges and future perspectives

Abstract

Photo-powered energy storage devices are attracting a lot of research interest due to their potential application in smart electronics. They have become a promising alternative to current energy sources and...

Progress of Photocapacitors

“…The total efficiency of the combined photocapacitor module can be calculated using eq , where A PV is the solar cell’s surface area and E in is the amount of energy received during charging (eq ). The overall efficiency is calculated by dividing the energy produced during illumination by the energy stored during photocharging. ,, η normalo normalv normale normalr normala normall normall = E normalo normalu normalt E normali normaln A normalP normalV × 100 E normali normaln = P normali normaln t …”

“…Overcharging may harm the SC’s lifespan, and a malfunctioning unit may influence the output voltage. This emphasizes the urgency to design photocapacitors with high voltage ranges. ,, Moreover, one of the most significant difficulties that must be addressed is the design of PC devices that can maintain a constant voltage for longer discharging intervals than a few minutes, as shown in the majority of photocapacitors described in the literature.…”

Recent progress in block copolymer soft-template-assisted synthesis of versatile mesoporous materials for energy storage systems

“…To provide a stable supply that meets the massive energy requirement of modern society, effective energy storage systems (ESSs) should be developed. 1–13 Energy storage devices broadly consist of electrolytes, active materials, and current collectors. 14,15 In general, energy storage is achieved through the redox reaction between the electrolyte and active materials.…”

Monolithic Perovskite Solar Capacitor Enabled by Double-Sided TiO2 Nanotube Arrays

“…Notably, supercapacitors are the most widely adopted energy storage device incorporated with solar cells owing to their high power density, fast charge−discharge rate, long cycling life, and good operational safety. 1 However, previous attempts to stack solar cells (often dye-sensitized solar cells and organic solar cells) with supercapacitors suffer from low charging voltage and low energy density due primarily to the inferior performance of the former. 1,2 Recently, perovskite solar cells (PSCs) have rapidly emerged as extremely promising next-generation photovoltaics because of the outstanding optoelectronic properties of metal halide perovskites, including large absorption coefficient, high ambipolar carrier mobility, long carrier diffusion length, and inherent tolerance to defects.…”

“…1 However, previous attempts to stack solar cells (often dye-sensitized solar cells and organic solar cells) with supercapacitors suffer from low charging voltage and low energy density due primarily to the inferior performance of the former. 1,2 Recently, perovskite solar cells (PSCs) have rapidly emerged as extremely promising next-generation photovoltaics because of the outstanding optoelectronic properties of metal halide perovskites, including large absorption coefficient, high ambipolar carrier mobility, long carrier diffusion length, and inherent tolerance to defects. 3−6 Remarkably, the power conversion efficiency (PCE) of PSCs has skyrocketed to 25.5%, 7 positioning them as notable candidates to recharge supercapacitors via harvesting solar energy.…”