Dynamic imaging of lithium in solid-state batteries by operando electron energy-loss spectroscopy with sparse coding.

ABSTRACT: Lithium-ion transport in cathodes, anodes, solid electrolytes, and through their interfaces plays a crucial role in the electrochemical performance of solid-state lithium-ion batteries. Direct visualization of the lithium-ion dynamics at the nanoscale provides valuable insight for understanding the fundamental ion behaviour in batteries. Here, we report the dynamic changes of lithium-ion movement in a solid-state battery under charge and discharge reactions by time-resolved operando electron energy-loss spectroscopy with scanning transmission electron microscopy. Applying image denoising and super-resolution via sparse coding drastically improves the temporal and spatial resolution of lithium imaging. Dynamic observation reveals that the lithium ions in the lithium cobaltite cathode are co

SUBMITTER: Nomura Y 

PROVIDER: S-EPMC7272654 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature