Journal
CHEMISTRY LETTERS
Volume 50, Issue 5, Pages 1041-1044Publisher
CHEMICAL SOC JAPAN
DOI: 10.1246/cl.210024
Keywords
Lithium-ion battery; Silicon electrode; Ionic-liquid electrolyte
Categories
Funding
- Japan Society for the Promotion of Science (JSPS) KAKENHI [19K05649, 19H02817, 20H00399]
- Grants-in-Aid for Scientific Research [20H00399] Funding Source: KAKEN
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Despite the potential enhancement in electrode performance with a film derived from ionic-liquid electrolyte, the inability to reform a stable surface film in the organic-liquid electrolyte after the film breakdown is a significant limitation.
Ionic-liquid electrolytes can enhance battery performance and safety but are expensive. To reduce the use of ionic-liquid electrolytes, we investigated the charge/discharge properties of Si-based electrodes in an organic-liquid electrolyte, where the electrode surface was pre-coated with a film derived from an ionic-liquid electrolyte. No improvement in the electrode performance was observed compared to that of a nonmodified Si electrode. Once the modified film was broken down, a stable surface film could not be reformed in the organic-liquid electrolyte.
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