Dipole-Spin Synergy in PdO/YMn ₂ O ₅ Enables Fast Ozone Decomposition from −45 to >45 °C at High Humidity

establishes a strong interfacial dipole, creates electron-rich Mn sites that electrostatically repel polar water molecules while enhancing ozone adsorption. Critically, this electronic restructuring concurrently modulates the Mn spin state, drastically lowering the energy barrier for the rate-limiting desorption of triplet oxygen. This work elucidates the fundamental mechanism of dipole-spin synergy, establishing a new paradigm for designing humidity-resistant catalysts for efficient environmental remediation under extreme operating conditions.