| Autor: |
Ge, Aimin, Nagai, Ryuuta, Nemoto, Kota, Li, Bingbing, Kannari, Koki, Inoue, Ken-ichi, Ye, Shen |
| Zdroj: |
Faraday Discussions; 2024, Issue 248, p119-133, 15p |
| Abstrakt: |
In aprotic lithium–oxygen (Li–O2) batteries, solvent properties are crucial in the charge/discharge processes. Therefore, a thorough understanding of the solvent stability at the cathode surface during the oxygen reduction/evolution reactions (ORR/OER) is essential for the rational design of high-performance electrolytes. In this study, the stability of typical solvents, a series of glyme solvents with different chain lengths, has been investigated during the ORR/OER by in situ vibrational spectroscopy measurements of sum frequency generation (SFG) spectroscopy and infrared reflection absorption spectroscopy (IRRAS). The structural evolution and decomposition mechanism of the solvents during ORR/OER have been discussed based on the observations. Our results demonstrate that superoxide (O2−) generated during the ORR plays a critical role in the stability of the solvents. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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