Defect and structural evolution under high-energy ion irradiation informs battery materials design for extreme environments.

ABSTRACT: Understanding defect evolution and structural transformations constitutes a prominent research frontier for ultimately controlling the electrochemical properties of advanced battery materials. Herein, for the first time, we utilize in situ high-energy Kr ion irradiation with transmission electron microscopy to monitor how defects and microstructures evolve in Na- and Li-layered cathodes with 3d transition metals. Our experimental and theoretical analyses reveal that Li-layered cathodes are more resistant to radiation-induced structural transformations, such as amorphization than Na-layered cathodes. The underlying mechanism is the facile formation of Li-transition metal antisite defects in Li-layered cathodes. The quantitative mathematical analysis of the dynamic bright-field imaging shows

SUBMITTER: Rahman MM 

PROVIDER: S-EPMC7486889 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature