Photo-Rechargeable Li-Ion Batteries: Device Configurations, Mechanisms, and Materials

The development of high-performance solar cells combined with rechargeable batteries is crucial in achieving a sustainable and renewable-based energy future. Photo-Rechargeable batteries (PRBs) are emerging dual-functionality devices, able to both harvest solar energy and store it in the form of electrochemical energy. Recently, efforts have been made in the search for advanced functional materials and integrated device configurations to improve the performance of photoenhanced batteries. A photo-rechargeable battery will provide a unique, standalone energy solution for self-powered remote electronic devices, independent of power grids. However, these devices currently suffer from several technical shortcomings in terms of efficiency, lifetime, and operating voltage. In this review, we present a comprehensive report on the significant research developments in the field of photo-rechargeable Li-ion batteries (Li-PRBs), including device configurations, working mechanisms, material selection, and future directions.