Trapping of Polysulfides with Sulfur‐Rich Poly Ionic Liquid Cathode Materials for Ultralong‐Life Lithium–Sulfur Batteries
| العنوان: | Trapping of Polysulfides with Sulfur‐Rich Poly Ionic Liquid Cathode Materials for Ultralong‐Life Lithium–Sulfur Batteries |
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| المؤلفون: | Zengxi Li, Xu Liu, Yu Lu, Wen Wen, Pingping Chen, Liaoyun Zhang, Qinghui Zeng, Zhengfeng Li, Xin Wen |
| المصدر: | ChemSusChem. 13:715-723 |
| بيانات النشر: | Wiley, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, General Chemical Engineering, chemistry.chemical_element, Lithium–sulfur battery, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, law.invention, chemistry.chemical_compound, Bromide, law, Environmental Chemistry, General Materials Science, chemistry.chemical_classification, Vulcanization, Polymer, 021001 nanoscience & nanotechnology, Cathode, 0104 chemical sciences, General Energy, chemistry, Chemical bond, Chemical engineering, Ionic liquid, Lithium, 0210 nano-technology |
| الوصف: | Sulfur-rich polymers synthesized by inverse vulcanization are promising cathodes for Li-S batteries and can suppress the shuttle effect to improve the cycling properties of Li-S batteries. However, developing a sulfur-rich copolymer with new chemical functionality to enhance performance of Li-S batteries remains a huge challenge. In this report, a sulfur-rich polymer cathode containing ionic liquid segments named poly(sulfur-co-1-vinyl-3-allylimidazolium bromide) [poly(S-co-DVIMBr)] was obtained by the inverse vulcanization of S8 with DVIMBr and used as cathode for the first time. This sulfur-rich poly ionic liquid cathode showed effective suppression of the shuttle effect through joint effects of the stable chemical bonding of C-S and strong cation absorption for lithium polysulfides, which was confirmed by DFT calculations. In particular, the Li-S cell with poly(S-co-DVIMBr) cathode delivered high capacity retention of 90.22 % even over 900 cycles. Developing sulfur-rich poly ionic liquids may provide a new strategy of introducing the functional groups with cations into the cathode materials for suppressing the shuttle effect and improving the performance of Li-S batteries. |
| تدمد: | 1864-564X 1864-5631 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f727e50c312bcdae4a9cdb06d4e85fabTest https://doi.org/10.1002/cssc.201903122Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....f727e50c312bcdae4a9cdb06d4e85fab |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1864564X 18645631 |
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