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Journal Article
Correlating Nanoscale Structures with Electrochemical Properties of Solid Electrolyte Interphases in Solid-State Battery Electrodes
- Authors
- Jimin Oh, Gun Park, Hongjun Kim, Sujung Kim, Dong Ok Shin, Kwang Man Kim, Hye Ryung Byon, Young-Gi Lee, Seungbum Hong
- Issue Date
- 2023-06
- Citation
- ACS Applied Materials & Interfaces, v.15, no.22, pp.26660-26669
- ISSN
- 1944-8244
- Publisher
- American Chemical Society
- Language
- English
- Type
- Journal Article
- Abstract
- Here, we investigate the nonlinear relationship between the content of solid electrolytes in composite electrodes and the irreversible capacity via the degree of nanoscale uniformity of the surface morphology and chemical composition of the solid electrolyte interphase (SEI) layer. Using electrochemical strain microscopy (ESM) and X-ray photoelectron spectroscopy (XPS), changes of the chemical composition and morphology (Li and F distribution) in SEI layers on the electrodes as a function of solid electrolyte contents are analyzed. As a result, we find that the solid electrolyte content affects the variation of the SEI layer thickness and chemical distributions of Li and F ions in the SEI layer, which, in turn, influence the Coulombic efficiency. This correlation determines the composition of the composite electrode surface that can maximize the physical and chemical uniformity of the solid electrolyte on the electrode, which is a key parameter to increase electrochemical performance in solid-state batteries.
- KSP Keywords
- Chemical composition and morphology, Composite Electrode, Coulombic Efficiency, Electrochemical performance, Electrochemical properties, Electrode surface, F distribution, F ions, Irreversible capacity, Key parameter, Layer thickness
This work is distributed under the term of Creative Commons License (CCL)
(CC BY NC ND)
(CC BY NC ND)
