Single ion solid-state composite electrolytes with high electrochemical stability based on a poly(perfluoroalkylsulfonyl)-imide ionene polymer
| العنوان: | Single ion solid-state composite electrolytes with high electrochemical stability based on a poly(perfluoroalkylsulfonyl)-imide ionene polymer |
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| المؤلفون: | Jian Wang, Liquan Chen, Qianru Shi, Lixin Xue, Dejun Qin, Bing Du |
| المصدر: | J. Mater. Chem. A. 2:15952-15957 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Materials science, Renewable Energy, Sustainability and the Environment, Composite number, Ionic bonding, General Chemistry, Electrolyte, Polymer, Electrochemistry, Lithium ion transport, Chemical engineering, chemistry, Polymer chemistry, Ionic conductivity, General Materials Science, Cyclic voltammetry |
| الوصف: | Composite single ion solid-state polymer electrolytes were prepared by blending lithiated poly(perfluoroalkylsulfonyl)imide (PFSILi) ionene with poly(ethylene oxide) (PEO) at various PFSILi contents. Their electrochemical performance was characterized by ionic conductivity, lithium ion transport number, cyclic voltammetry and galvanostatic cycling in batteries. The composite PEO–PFSI-25, containing 24.5% of PFSI, was found to have a maximum ionic conductivity of 1.76 × 10−4 S cm−1 at 80 °C. Because of the immobilization of the anionic perfluorosulfonimide groups on the backbone of the ionene polymer with flexible and stable perfluoroether connectors, the composite had unusually high electrochemical stability (up to 5.5 V vs. Li+/Li) and a low anion transference number. The PFSILi unit interacts strongly with the PEO segments, resulting in the depression of PEO crystallization and the formation of multi-dimensional ionic crosslinks within the composite to impart dimensional and cycling stability to the electrolyte system. LiFePO4/Li battery prototypes using PEO–PFSILi polymer electrolytes, with reversible capacity of 140 mA h g−1 at 80 °C and 0.2 °C, were able to maintain 50 stable cycles for 1000 h at 70 °C and 0.1 °C. |
| تدمد: | 2050-7496 2050-7488 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::507ac7309dc8bee0b06424a3260cb758 https://doi.org/10.1039/c4ta02810d |
| رقم الأكسشن: | edsair.doi...........507ac7309dc8bee0b06424a3260cb758 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20507496 20507488 |
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