Scientists from Rice University in Houston, Texas, have developed a device that utilizes a photoelectrochemical cell with unparalleled energy efficiency to convert sunlight into green hydrogen. This is a remarkable moment in the field of renewable energy and could become a keystone for clean energy for the future.
The sun generates an immense amount of energy, and for a long time, scientists have dreamed of using that energy to make clean fuel. Now, it is possible to convert that light into green hydrogen fuel for the first time in history.
Before this innovation, similar technologies had been used but could only achieve low efficiency and required expensive or unstable materials. What is new in the system is its efficiency and cost-effectiveness. The Rice University device achieved a solar-to-hydrogen conversion efficiency is 20.8%, which is the highest ever recorded for a PEC cell using halide perovskites without solar concentration.
Halide perovskites break down in water, making them challenging to use for water splitting. The Rice team, guided by scientist Aditya Mohite, fixed this by creating a two-layer shield, one layer blocks water, and the other keeps good electrical contact. This kept the material working well without damage.
This new technology could have a big impact in the future. This clean fuel could replace fossil fuels in areas like cars, factories, and for storing energy. It could be used in more types of chemical and industrial work.
The world is looking for clean energy, and this innovation can be a strong solution. If improved, this could lead to a solar-powered hydrogen system that helps reduce pollution and the use of fossil fuels.
Source
https://www.ecoportal.net/en/sunlight-converted-into-energy/8167
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