Sulfur-mediated transformation from osmium nanocrystals to single atoms for efficient alkaline hydrogen evolution reaction

Proceedings of the National Academy of Sciences, Volume 122, Issue 27, July 2025. <br/>SignificanceGreen hydrogen energy based on zero carbon is a promising alternative to fossil fuels. The electrocatalytic hydrogen evolution reaction (HER) is widely acknowledged as the most efficient, safe, and environmentally sustainable method for …