My group focus on the study of the atomic structure, atomic composition and defect behavior of nanomaterials, through in-situ transmission electron microscopy (TEM), aberration-corrected TEM/STEM, EELS/EDS and DPC techniques. In particular, the group is interested in understanding the relationships between the atomic structure, composition and the properties of nanomaterials, and the fundamental mechanisms governing the behavior of materials. The material systems of interest include battery materials, proton exchange membrane fuel cells, catalyst nanoparticles and 2D materials.