PV‑leaf innovation: Generating power and water from the sun
Scientists have created a modern photovoltaic device modeled after leaves, which generates electrical energy from sunlight and produces fresh water. It mimics the natural processes occurring in plants.
2:03 PM EDT, June 21, 2024
In 2023, a research team from Imperial College London presented an innovative photovoltaic device called PV-leaf (photovoltaic leaf). According to information published on the Interesting Engineering website, this novel invention converts sunlight into electrical energy, which is then used to produce fresh water. Scientists suggest that this technology could form the foundation for future renewable energy systems.
Photovoltaic leaf: will it be better than panels?
Research indicates that the PV-leaf can generate over 10 percent more electrical energy than traditional solar panels, in which up to 70 percent of the power the sun provides is wasted.
Scientists predict that their invention could significantly extract fresh water from the atmosphere. If the device is implemented as expected, by 2050 it will be capable of producing up to 10 trillion gallons of fresh water annually.
– This innovative project has enormous potential that can significantly increase the efficiency of solar panels while maintaining cost-effectiveness and practicality, – said Dr. Gan Huang, honorary research fellow at the Department of Chemical Engineering and the study's author.
How does the PV-leaf work?
The PV-leaf does not require pumps, fans, or costly porous materials, making it exceptionally practical. In addition to generating electrical energy and water, the device can also provide thermal energy. It can adapt to various sunlight conditions and withstand different ambient temperatures.
– Implementation of this leaf-like project can significantly accelerate the global energy transformation while addressing two important global issues: the increasing demand for energy and fresh water, – said Professor Christos Markides, head of the Clean Energy Processes Laboratory and the study’s author.
The photovoltaic leaf mimics plants
The PV leaf operates on a similar principle to real leaves, imitating transpiration. Water is transported through the device and removed, cooling the photovoltaic cells and increasing their efficiency.
