Amorphization mechanism of SrIrO <sub>3</sub> electrocatalyst: How oxygen redox initiates ionic diffusion and structural reorganization
Gang Wan, J. W. Freeland, Jan Kloppenburg, Guido Petretto, Jocienne N. Nelson, Ding-Yuan Kuo, Cheng‐Jun Sun, Jianguo Wen, J. Trey Diulus, Gregory S. Herman, Yongqi Dong, Ronghui Kou, Jingying Sun, Shuo Chen, Kyle Shen, Darrell G. Schlom, Gian‐Marco Rignanese, Geoffroy Hautier, Dillon D. Fong, Zhenxing Feng, Hua Zhou, Jin Suntivich
Abstract
The transformation from crystalline SrIrO 3 to active amorphous iridium oxide electrocatalyst occurs via the lattice oxygen redox.
Topics & Concepts
ElectrocatalystRedoxIonic bondingOxygenAmorphous solidOxygen evolutionChemistryMaterials scienceDiffusionIridiumInorganic chemistryChemical engineeringElectrochemistryCatalysisCrystallographyPhysical chemistryIonElectrodeThermodynamicsEngineeringBiochemistryPhysicsOrganic chemistryElectrocatalysts for Energy ConversionAdvanced Condensed Matter PhysicsCatalytic Processes in Materials Science