Bernt Johannessen

Protocols on X-ray Absorption Spectroscopy Measurement and Interpretation

Abstract Understanding the local electronic and atomic structure of materials is central to modern physics, chemistry, materials science, and nanotechnology. X-ray absorption spectroscopy (XAS) provides element-specific insight into these local environments through core-level X-r...

Disentangling Elemental Roles in an Amorphous Medium‐Entropy Electrocatalyst for Oxygen Evolution

ABSTRACT Understanding elemental cooperation in high/medium‐entropy electrocatalysts is essential for rational design but remains challenging due to their compositional complexity. Herein, an amorphous medium‐entropy catalyst, FeCoNiMo‐a, with a nanoring architecture, is develope...