Risch, M.: Greater than the sum of its parts. Nature Energy 6 (2021), p. 576–577
Open Access Version (available 01.06.2022)

The performance of electrocatalysts depends on material properties that may differ spatially even within a single particle. Now, a combination of operando microscopy techniques is used to correlate morphology and metal oxidation state with local activity of an oxygen evolution catalyst, which may help to guide future catalyst design.