In Situ X-ray Absorption Spectroscopy of LaFeO3 and LaFeO3/LaNiO3 Thin Films in the Electrocatalytic Oxygen Evolution Reaction

The Journal of Physical Chemistry C has published an article by Che et Al about their study of the “electrocatalytic oxygen evolution reaction using in situ X-ray absorption spectroscopy (XAS) to track the dynamics of the valence state and the covalence of the metal ions of LaFeO₃ and LaFeO₃/LaNiO₃ thin films”.

Silson’s silicon nitride membranes of frame size 10.0 x 10.0 mm and thickness 525 μm and membrane size 2.5 x 2.5 mm and thickness 100 nm were used for the in situ XAS characterization. Monolayer Ca₂Nb₃O₁₀ (CNO) nanosheets with a thickness of ∼1 nm were deposited on our membranes by the Langmuir–Blodgett method. A 100 nm conductive La_0.67Sr_0.33MnO₃ (LSMO) was then grown onto the CNO-nanosheet buffered silicon nitride substrate using pulsed laser deposition.

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