Measurements of local chemistry and structure in Ni(O)-YSZ composites during reduction using energy-filtered environmental TEM

Energy-filtered transmission electron microscopy images are acquired during the reduction of a NiO-YSZ composite in H 2 up to 600 °C. Temperature-resolved quantitative information about both chemistry and structure is extracted with nm spatial resolution from the data, paving the way for the development of detailed reduction models. Energy-filtered TEM imaging during reaction with hydrogen at high temperature provides quantitative information about chemical and structural changes in NiO-YSZ.