Li, G., Yin, S., Ji, L., Nie, X., Zhu, T., Cheng, X., Xu, J., Huang, R., Jiang, Y., Zhang, B., Sun, S. (2025). Universal electrochemical quantification of active site density in transition metal nitrogen carbon electrocatalysts. Nature Communications. https://doi.org/10.1038/s41467-025-65614-1