This review delves into the latest developments in integrated solar cell-energy storage systems, marrying various solar cells with either supercapacitors or batteries.
Are solar batteries the future of energy storage?
Solar batteries present an emerging class of devices which enable simultaneous energy conversion and energy storage in one single device. This high level of integration enables new energy storage concepts ranging from short-term solar energy buffers to light-enhanced batteries, thus opening up exciting vistas for decentralized energy storage.
How can integrated solar cell-energy storage systems solve solar energy problems?
However, the intermittent nature of solar energy results in a high dependence on weather conditions of solar cells. Integrated solar cell-energy storage systems that integrate solar cells and energy storage devices may solve this problem by storing the generated electricity and managing the energy output.
Can a molecular solar thermal energy storage system be a hybrid device?
Two main issues are (1) PV systems' efficiency drops by 10%–25% due to heating, requiring more land area, and (2) current storage technologies, like batteries, rely on unsustainably sourced materials. This paper proposes a hybrid device combining a molecular solar thermal (MOST) energy storage system with PV cell.
This critical literature review serves as a guide to understand the characteristics of the approaches followed to integrate photovoltaic devices and storage in one device, shedding light on the improvements required to develop more robust products for a sustainable future.
Also, integrated devices typically result in higher volumetric and gravimetric energy density devices when compared with solar systems with separated components, due to a reduction on wiring, the sharing of common encapsulation or electrodes, and more compact devices.
Solar cells and batteries/supercapacitors require suitable architectures for their integration. Electrochemical balancing between conversion and storage units must be achieved. Nanostructured materials can make common electrodes work for both electrochemical reactions. A special focus on the most sustainable integrated energy devices is given.