Spin-powered crystals dramatically improve water splitting process for clean hydrogen production

Phys.org | Max Planck Society | NOVEMBER 25, 2024

Water splitting -- breaking water molecules into hydrogen and oxygen -- is a promising pathway to sustainable energy. However, this process has long been challenged by the slow chemical kinetics of the oxygen evolution reaction that make hydrogen production inefficient and costly.

An international research team has now uncovered a solution. By using special crystals with unique intrinsic "chiral" structures -- meaning they have a distinctive left or right-handed atomic arrangement -- researchers have dramatically improved the water splitting process.

The findings are published in the journal Nature Energy.

The topological chiral crystals, composed of rhodium and elements like silicon, tin, and bismuth, possess an extraordinary ability to manipulate electron spin. This quantum mechanical property allows electron transfer to oxygen generation in a highly efficient manner, significantly accelerating the overall chemical reaction.

"These crystals are essentially quantum machines," says Dr. Xia Wang, lead researcher from the Max Planck Institute for Chemical Physics of Solids. "By leveraging the unique spin properties of electrons, we've created a catalyst that outperforms traditional materials by a factor of 200." more

https://phys.org/news/2024-11-powered-crystals-hydrogen-production.html