Zhao, J., J. Lian, Z. Zhao, X. Wang, and J. Zhang. “A Review of In-Situ Techniques for Probing Active Sites and Mechanisms of Electrocatalytic Oxygen Reduction Reactions”. Nano-Micro Letters, vol. 15, Dec. 2022, p. 19, doi:10.1007/s40820-022-00984-5.