Amorphization mechanism of SrIrO ₃ electrocatalyst: How oxygen redox initiates ionic diffusion and structural reorganization

Key Points

Investigate how crystalline SrIrO3 transforms into an active amorphous electrocatalyst through oxygen redox processes.
Analyzed the transition from crystalline to amorphous states in SrIrO3 under controlled conditions.
Utilized electrochemical techniques to assess electrocatalytic activity and structural changes.
Crystalline SrIrO3 underwent significant amorphization, enhancing its electrocatalytic properties.
Oxygen redox was identified as the key initiator of ionic diffusion and structural reorganization.

Demonstrates oxygen redox initiates structural changes in SrIrO3, suggesting enhanced electrocatalytic activity.

The transformation from crystalline SrIrO 3 to active amorphous iridium oxide electrocatalyst occurs via the lattice oxygen redox.

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Wan et al. (2021) studied this question.

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