Understanding High‐Rate K + ‐Solvent Co‐Intercalation in Natural Graphite for Potassium‐Ion Batteries
| العنوان: | Understanding High‐Rate K + ‐Solvent Co‐Intercalation in Natural Graphite for Potassium‐Ion Batteries |
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| المؤلفون: | Qiannan Liu, Zhe Hu, Shulei Chou, Qiu Zhang, Luojia Liu, Song Jin, Yong Lu, Lin Li, Shuo Zhao |
| المصدر: | Angewandte Chemie International Edition. 59:12917-12924 |
| بيانات النشر: | Wiley, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Reaction mechanism, Materials science, 010405 organic chemistry, Intercalation (chemistry), General Chemistry, Electrolyte, 010402 general chemistry, Electrochemistry, 7. Clean energy, 01 natural sciences, Catalysis, 0104 chemical sciences, Anode, Solvent, Chemical engineering, Graphite, Fourier transform infrared spectroscopy |
| الوصف: | Graphite shows great potential as an anode material for rechargeable metal-ion batteries because of its high abundance and low cost. However, the electrochemical performance of graphite anode materials for rechargeable potassium-ion batteries needs to be further improved. Reported herein is a natural graphite with superior rate performance and cycling stability obtained through a unique K-solvent co-intercalation mechanism in a 1 m KCFSO diethylene glycol dimethyl ether electrolyte. The co-intercalation mechanism was demonstrated by ex situ Fourier transform infrared spectroscopy and in situ X-ray diffraction. Moreover, the structure of the [K-solvent] complexes intercalated with the graphite and the conditions for reversible K-solvent co-intercalation into graphite are proposed based on the experimental results and first-principles calculations. This work provides important insights into the design of natural graphite for high-performance rechargeable potassium-ion batteries. |
| تدمد: | 1521-3773 1433-7851 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::ace93584fdbfb32c3c3d4d7299e272d1 https://doi.org/10.1002/anie.202001966 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........ace93584fdbfb32c3c3d4d7299e272d1 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15213773 14337851 |
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