Thermoplastic polyurethane/poly(methyl methacrylate)/titania gel electrolyte film with high voltage and coulombic efficiency for lithium-ion battery
| Autor: | Xinqiang Wang, Manman Ren, Weiliang Liu, Shou-Juan Wang, Fan-Gong Kong, Yi-Fan Wang, Dan Peng, Jian-Lei Sun, Ming Sun |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
General Chemical Engineering General Engineering General Physics and Astronomy chemistry.chemical_element 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Poly(methyl methacrylate) Lithium-ion battery 0104 chemical sciences Thermoplastic polyurethane chemistry.chemical_compound chemistry Chemical engineering visual_art visual_art.visual_art_medium Ionic conductivity General Materials Science Lithium Methyl methacrylate 0210 nano-technology |
| Zdroj: | Ionics. 25:3695-3704 |
| ISSN: | 1862-0760 0947-7047 |
| DOI: | 10.1007/s11581-019-02947-0 |
| Popis: | Polymer films composed of thermoplastic polyurethane (TPU), poly (methyl methacrylate) (PMMA), and titania were developed by solution-casting method. Accordingly, gel polymer electrolytes (GPEs) were prepared by soaking the films in commercial liquid electrolytes for 8 h. The prepared GPEs could fix the liquid electrolytes inside and kept the shape stable. The hybrid GPEs exhibited a maximum ionic conductivity of 3.9 × 10−3 S cm−1 at room temperature, with an electrochemical stability of up to 4.8 V versus Li+/Li. The compatibility test demonstrated that the introduction of PMMA and TiO2 improved the interfacial compatibility between lithium and GPEs. In battery test, the Li/GPE/LiFePO4 cell delivered the first discharge capacity of 169.2 mAh g−1 at 0.1 C and stable cycle performance (the retention of capacity is nearly 92% after 60 cycles) with high coulombic efficiency. All results demonstrated that the hybrid GPE was promising to satisfy the application in the future. |
| Databáze: | OpenAIRE |
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