Defect and Interface/Interphase Engineering in Electrode Materials for Metal Ion Batteries

Rechargeable batteries are promising energy storage technologies to provide high energy and high power for applications such as electric vehicles and electrical grids. Recent studies have shown enhanced electrochemical charge storage in electrodes that contain intentional structural defects (e.g., vacancies and interstitials) or with tailored interfaces/interphases. In this talk, recent works in my group including engineering defects in electrode materials through ion irradiation as well as interface/interphase engineering in metal ion batteries (e.g., Li ion and Na ion batteries) will be discussed. <i>In situ</i> and <i>operando</i> characterizations that help elucidate the structural and microstructural evolution of the battery materials will be discussed. Perspectives regarding new pathways to design and engineering defects and interfaces in electrode materials with enhanced energy/power for rechargeable batteries will be given.