A photorechargeable device can generate power from sunlight and store it in one device, which has a broad application prospect in the future. However, if the working state of the photovoltaic part in the photorechargeable device deviates from the maximum power point, its actual power conversion efficiency will reduce. The strategy of voltage match on the maximum power point is reported to achieve a high overall efficiency (η) of the photorechargeable device assembled by a passivated emitter and rear cell (PERC) solar cell and Ni-based asymmetric capacitors. According to matching the voltage of the maximum power point of the photovoltaic part, the charging characteristics of the energy storage part are adjusted to realize a high actual power conversion efficiency of the photovoltaic part (η). The η of a Ni(OH)-rGO-based photorechargeable device is 21.53%, and the η is up to 14.55%. This strategy can promote further practical application for the development of photorechargeable devices.
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http://dx.doi.org/10.1021/acsami.2c23046 | DOI Listing |
Nano Lett
January 2025
Department of Materials, Imperial College London, London SW7 2AZ, United Kingdom.
Combining energy harvesting with energy storage systems in a single device could offer great advantages for continuous power supply in both indoor and outdoor electric applications. In this work, we demonstrate a photochargeable sodium-ion battery (PSIB) based on a photoactive cathode of two-dimensional crystals of MoSe. This photocathode enables spontaneous photodriven charging of a sodium-ion battery cathode under illumination and an increase in the reversible capacity to 29% at 600 mA g compared to that under dark conditions during galvanostatic cycling.
View Article and Find Full Text PDFNanoscale
January 2025
Department of Civil and Environment Engineering, University of Ulsan, Daehakro 93, Namgu, Ulsan, 680-749, Republic of Korea.
This study presents an innovative approach to integrated energy systems by combining solar energy harvesting and electrochemical charge storage in a single modular platform. By strategically incorporating a MoS/NaTaO heterostructure material, we have developed a photo-rechargeable zinc-ion capacitor (PR-ZIC) that utilises the synergistic benefits of this unique configuration. The photoactive MoS/NaTaO cathode effectively absorbs light and charges the capacitor, enabling continuous light-driven operation.
View Article and Find Full Text PDFACS Appl Mater Interfaces
July 2024
Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.
Photorechargeable supercapacitors are promising next-generation renewable energy storage devices. Previously, a hybrid structure consisting of indium-tin oxide branched nanowires (ITO BRs) and poly(3-hexylthiophene) (P3HT) was demonstrated as a photorechargeable supercapacitor. However, the formation mechanism of photovoltage has not been studied.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
September 2024
Key Laboratory of Photoelectric Conversion and Utilization of Solar Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, Liaoning, China.
The solar-driven photorechargeable zinc-ion batteries have emerged as a promising power solution for smart electronic devices and equipment. However, the subpar cyclic stability of the Zn anode remains a significant impediment to their practical application. Herein, poly(diethynylbenzene-1,3,5-triimine-2,4,6-trione) (PDPTT) was designed as a functional polymer coating of Zn.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
September 2024
Key Laboratory of In-Fiber Integrated Optics (Ministry of Education), College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin, 150001, China.
Photorechargeable zinc ion batteries (PZIBs), which can directly harvest and store solar energy, are promising technologies for the development of a renewable energy society. However, the incompatibility requirement between narrow band gap and wide coverage has raised severe challenges for high-efficiency dual-functional photocathodes. Herein, half-metallic vanadium (III) oxide (VO) was first reported as a dual-functional photocathode for PZIBs.
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