Stanford Synchrotron Radiation Lightsource

Resonant Inelastic X-ray Scattering Covalency Analysis Reveals Non-Aufbau Electronic Configurations in Low-Valent Lanthanides

Abstract Divalent lanthanide ions can adopt complex 4fn5d1 electron configurations that formally violate the Aufbau principle. The blending of contracted 4f and diffuse 5d character strongly influences lanthanide frontier molecular orbitals, yet quantitative characterization of 5...

Influence of many-body correlation and mixed-valence fluctuations on X-ray magnetic circular dichroism and resonant inelastic X-ray scattering spectra

X-ray magnetic circular dichroism (XMCD) and resonant inelastic X-ray scattering with magnetic circular dichroism (RIXS-MCD) provide unparalleled insights into the electronic and magnetic dynamics of complex materials. However, interpreting their spectra in mixed-valence systems...

Oxidative Electrochemical Coupling Between Bi and Mn in Rechargeable Alkaline MnO2 Cathodes

Abstract The Bi-modified MnO2 cathode is an enabling technology for rechargeable alkaline Zn batteries, which are under intense study for low-cost, sustainable, non-flammable grid-scale energy storage. Although the effect of Bi on MnO2 rechargeability has been known for decades,...

Deciphering Kinetic Principles of Dual‐Anion Electrolytes for Extreme Fast‐Charging Lithium‐Ion Batteries

ABSTRACT Tailoring Li + solvation coordination has been recognized as a strategy to enhance the electrochemical performance of lithium‐ion batteries (LIBs) under extreme fast‐charging (XFC) conditions. Beyond weakening Li + solvation, increased Li–anion pairing plays a crucial ro...