3️⃣ What are the implications?

The findings suggest that numerous low-barrier processes involving collective atomic motion enable dynamic restructuring of the Pd step edge, highlighting a fluxionality aspect in oxidation catalysis that could influence the operando evolution of catalytic interfaces.

1️⃣ What is the paper about?

The paper combines automatic process exploration with an iteratively trained machine-learning interatomic potential to identify elementary processes involved in the initial oxidation of a Pd step edge.

3️⃣ What are the implications?

The findings enhance the understanding of degradation mechanisms at the anode side of SOECs, which is crucial for developing strategies to improve the lifetime and performance of these cells. The study emphasizes the need for atomic-scale understanding to design more durable and efficient energy conversion systems.

2️⃣ What´s new?

The study provides insights into the formation and growth of mixed ion electron conductive (MIEC) phases and secondary structures at the LSM/YSZ interface after prolonged operation at high temperatures. It combines chemical electron microscopy with theoretical modeling to reveal local phenomena that occur within the same sample, highlighting the presence of nano-scale complexions with improved oxygen diffusivity.

1️⃣ What is the paper about?

The paper investigates the interfacial structures in solid oxide cells (SOCs), particularly focusing on the solid-solid interfaces hidden between two solids. It explores how these interfaces evolve under high temperatures and electrochemical conditions, affecting the performance and degradation of solid oxide fuel and electrolysis cells (SOFCs, SOECs).