A Review of Integrated Systems Based on Perovskite Solar Cells and Energy Storage Units: Fundamental, Progresses, Challenges, and Perspectives

Abstract

With the remarkable progress of photovoltaic technology, next-generation perovskite solar cells (PSCs) have drawn significant attention from both industry and academic community due to sustainable energy production. The single-junction-cell power conversion efficiency (PCE) of PSCs to date has reached up to 25.2%, which is competitive to that of commercial silicon-based solar cells. Currently, solar cells are considered as the individual devices for energy conversion, while a series connection with an energy storage device would largely undermine the energy utilization efficiency and peak power output of the entire system. For substantially addressing such critical issue, advanced technology based on photovoltaic energy conversion-storage integration appears as a promising strategy to achieve the goal. However, there are still great challenges in integrating and engineering between energy harvesting and storage devices. In this review, the state-of-the-art of representative integrated energy conversion-storage systems is initially summarized. The key parameters including configuration design and integration strategies are subsequently analyzed. According to recent progress, the efforts toward addressing the current challenges and critical issues are highlighted, with expectation of achieving practical integrated energy conversion-storage systems in the future.

Photoirradiation-Induced Capacitance Enhancement in the h-WO3/Bi2WO6 Submicron Rod Heterostructure under Simulated Solar Illumination and Its Postillumination Capacitance Enhancement Retainment from a Photocatalytic Memory Effect

“…However, solar energy has a low density and is intermittent, which needs to be converted and stored for practical usage. 6,7 A supercapacitor is an important kind of energy storage device and is promising for various technological applications, 8−13 and continuous research efforts are now being made to improve its energy density. Recently, photoassisted charging has been reported as a novel approach to successfully increase the capacitance of supercapacitors with the utilization of solar energy.…”

“…Energy crisis due to the heavy dependence on fossil fuels is a serious problem worldwide that needs to be solved urgently to meet the energy supply requirement and ease the environmental pollution problem globally. − Solar energy is an abundant renewable green energy source that reaches the earth’s surface with a quantity far exceeding human needs. , Thus, it could be an ideal source to solve the energy crisis. However, solar energy has a low density and is intermittent, which needs to be converted and stored for practical usage. , A supercapacitor is an important kind of energy storage device and is promising for various technological applications, − and continuous research efforts are now being made to improve its energy density. Recently, photoassisted charging has been reported as a novel approach to successfully increase the capacitance of supercapacitors with the utilization of solar energy. − Under proper illumination, these photoelectrochemical systems with semiconductor-based active materials could generate electron–hole pairs to participate in the charging and discharging processes of these supercapacitors and subsequently enhance their capacitances.…”

Photoelectrochemical energy storage materials: design principles and functional devices towards direct solar to electrochemical energy storage

“…to fulfil efficient solar energy utilization on demand with high reliability. 10,11 With the booming development of PV systems and electrochemical energy storage (EES) systems, converting and storing solar energy into rechargeable batteries hold a great promise for solar energy utilization with practical viability.…”

Strategies for high‐performance perovskite solar cells from materials, film engineering to carrier dynamics and photon management

“…At present, Si‐based SCs still dominate the market, however, their complicated and high‐cost manufacturing processes, limited bandgap adjustability, and even theoretical power conversion efficiency (PCE) obstruct further improvement of such devices. Thus, the next generation SCs will focus on the simple and low‐cost fabrication processing for high‐efficiency 1 …”

“…Thus, the next generation SCs will focus on the simple and low-cost fabrication processing for highefficiency. 1 In recently years, halide perovskite solar cells (HPSCs) have attracted great attention as a promising candidate for next generation SCs, because of their low-cost fabrication and fast-growing PCE from 3.8% in 2009 to 25.5% in 2021. [2][3][4] The halide perovskite material (CsPbX 3 , X = Cl, Br, I) was first synthesized by Wells et al in 1893.…”