Xu, Q., Yao, X., Chung, H. Y., Liang, X., Zhang, Z., Zhang, Z., Lo, W. K., Zeng, Y., Zeng, X. C., Ng, Y. H., Wang, S. (2026). Electricity-free hydrogen production from the air. Nature Communications. https://doi.org/10.1038/s41467-025-67511-z