Impedance investigation of the high temperature performance of the solid-electrolyte-interface of a wide temperature electrolyte
Autor: | Dong Zheng, Deyang Qu, Huainan Qu, Weixiao Ji, Xiaoxiao Zhang |
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Rok vydání: | 2022 |
Předmět: |
Materials science
Temperature Temperature cycling Electrolyte Electrochemistry Cathode Lithium-ion battery Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Anode Dielectric spectroscopy Biomaterials Electrolytes Colloid and Surface Chemistry law Dielectric Spectroscopy Electric Impedance Composite material Electrodes Electrical impedance |
Zdroj: | Journal of Colloid and Interface Science. 608:3079-3086 |
ISSN: | 0021-9797 |
DOI: | 10.1016/j.jcis.2021.11.033 |
Popis: | The high temperature cycling performance of a wide temperature electrolyte and the solid electrolyte interphase (SEI) along the cycling were investigated using a three-electrode pouch cell. The electrolyte developed in our lab demonstrated outstanding low temperature performance. The electrolyte was found to have a good and stable cycling performance at a high temperature in comparison with a state-of-the-art baseline electrolyte. Electrochemical impedance spectroscopy (EIS) was conducted on the anode, the cathode and the full cell independently with a reference embedded pouch cell. The distribution of relaxation times (DRT) transformation was calculated from the EIS spectrum. An equivalent circuit model was used to fit the anode EIS data and the electrochemical process on the anode was revealed. We concluded that a denser SEI layer was built on the anode of the improved electrolyte. |
Databáze: | OpenAIRE |
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