Lithium-ion attack on yttrium oxide in the presence of copper powder during Li plating in a super-concentrated electrolyte.

ABSTRACT: Li plating/stripping on Cu and Y₂O₃ (Cu + Y₂O₃) electrodes was examined in a super-concentrated electrolyte of lithium bis(fluorosulfonyl)amide and methylphenylamino-di(trifluoroethyl) phosphate. In principle, Li⁺ ions cannot intercalate into a Y₂O₃ crystal because its intercalation potential obtained from first-principles calculations is -1.02 V vs. Li⁺/Li. However, a drastic decrease in the electrode potential and a subsequent constant-potential region were observed during Li plating onto a Cu + Y₂O₃ electrode, suggesting that Li⁺ interacted with Y₂O₃. X-ray diffraction (XRD) patterns and X-ray absorption fine structure (XAFS) spectra of th

SUBMITTER: Shiga T 

PROVIDER: S-EPMC8694813 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature