Unraveling Water–Defect Coupled Degradation via Deuterium Isotope Labeling in Prussian Blue Analogue Cathodes for Long‐Life Sodium‐Ion Batteries. - Ling, Fangxin; Diao, Jiefeng; Wang, Yan‐Ru; Dai, Junyi; Ma, Mingze; Li, Ling; Li, Zhen; Feng, Jian; Bai, Ruilin; Hu, Nan; Sun, Junpeng; Huo, Hanyu; et al. (Angewandte Chemie International Edition, 2026)