British researchers try to use perovskite solar energy for hydrogen production

　　Scientists at the University of Bath's Center for Sustainable Chemistry Technologies are planning to use perovskite-based solar cells to produce hydrogen. In a graphite-protected CsPbBr3 perovskite photoanode functionalized with a water oxidation catalyst for oxygen release in water Report published in Nature Communications, the research team claims to have developed a waterproof battery that splits water into hydrogen and Oxygen, works underwater. Researchers at UK universities are now trying to solve the problem of underwater perovskite instability by coating layers of the material with a graphite coating. "The coated cells worked underwater for 30 hours - 10 hours longer than the previous record," the scientists wrote, adding that the glue holding the coating to the cells began to fail after 30 hours. They think a stronger glue could help cells stabilize for longer. They added: "Under constant simulated solar illumination, we achieved 30 hours of recording stability in aqueous electrolytes with currents above 2 mAcm-2 (milliamps/cm2) and voltages of 1.23 VRHE." Instead of expensive indium , have used cheaper and more sustainable commercially available graphite to coat perovskite cells for electrolysis. The researchers are also trying to increase the voltage generated by perovskite cells to the levels needed to perform electrolysis without the need for an additional power source. "To address this challenge, the team is adding catalysts to reduce the energy requirements needed to drive the reaction," the report states.

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