In operando measurements of kinetics of solid electrolyte interphase formation in lithium-ion batteries
| Autor: | Chia-Hung Su, Shih-Chang Chang, Sylvia Ayu Pradanawati, Tibebu Alemu, Yu-Lin Kuo, Fu-Ming Wang, Pin-Ling Lin, Quoc-Thai Pham |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology Ionic bonding 02 engineering and technology Electrolyte Quartz crystal microbalance 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Dissociation (chemistry) Lithium-ion battery 0104 chemical sciences Chemical kinetics Reaction rate constant Chemical engineering Interphase Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Journal of Power Sources. 400:426-433 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2018.08.039 |
| Popis: | This study applied two in operando techniques to reveal the reaction kinetics of solid electrolyte interphase formation on electrolyte and benzimidazole salt additives. The results obtained from studying interface effects reveal changes in solid electrolyte interphase mass, reflection angle, and reflection intensity within the electrolyte additives in accordance with electron-withdrawing and electron-donating substitutions. Surface plasma resonance results reveal that the electrolyte containing the electron-withdrawing salt additive exhibited the highest rate constant (774 s−1) of the binding reaction between the benzimidazole additive and Au surface, indicating the strong reaction effects on Au. The electrolyte containing the electron-withdrawing salt additive accelerates and facilitates the dissociation reaction of the ethylene carbonate–lithium ion (EC–Li+) ionic cluster. From the quartz crystal microbalance results, the electrolyte containing the electron-withdrawing salt additive shows the greatest solid electrolyte interphase mass (14.84 μg cm−2), representing the intense dissociation reactions of the EC–Li+ ionic cluster as well as solid electrolyte interphase formation and recombination. In this study, selecting a high rate constant and high binding strength of the EC–Li+ ionic cluster on the electrode surface enhance solid electrolyte interphase formation and battery performance. |
| Databáze: | OpenAIRE |
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