Vendredi 8 avril 2022 à 11 h
INSP – Sorbonne Université – 4 place Jussieu – 75005 Paris – Barre 22-23, 3e étage, salle 317
Raj Pandya – LPENS
Intercalation reactions play a huge role in condensed matter science from tuning band structures to bring out superconductivity to allowing the analysis of biomolecules such as DNA. In this talk, I will discuss recent results from methods we have developed and applied to studying a wide-range of intercalation chemistries.
I will begin by covering our recent discoveries of strong room-temperature ferromagnetic correlations along the zigzag edge of semiconducting phosphorene nanoribbons (zPNRs), produced by Li-intercalation into black phosphorous. I will then turn to intercalation reactions in energy storage, namely Li-ion batteries, demonstrating how we can directly visualise in 4D (space and time) ion dynamics in operating batteries at the single-particle level across liquid and solid phases. If time I will finish with a discussion of the application of high-speed Raman methods for tracking Li+/K+ intercalation in IrO2 electrocatalysts and archetypal battery cathode materials.