Controlled Structural Activation of Iridium Single Atom Catalyst for High-Performance Proton Exchange Membrane Water Electrolysis - Wonjae Ko; Jaehyuk Shim; Hyunsoo Ahn; Hee Jung Kwon; Kangjae Lee; Yoon Jung; Wytse Hooch Antink; Chan Woo Lee; Sungeun Heo; Seongbeom Lee; Junghwan Jang; Jiheon Kim; et al. (Journal of the American Chemical Society, 2025)