Single-ion polymer/LLZO hybrid electrolytes with high lithium conductivity
| Autor: | Maria Forsyth, Laurent Castro, Luca Porcarelli, Haijin Zhu, Marine Lechartier, Aurelie Gueguen, David Mecerreyes |
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| Přispěvatelé: | European Commission |
| Jazyk: | angličtina |
| Předmět: |
chemistry.chemical_classification
Materials science Single ion chemistry.chemical_element boron methacrylic monomer 02 engineering and technology Polymer Electrolyte lithium single-ion conduction Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 7. Clean energy 01 natural sciences 0104 chemical sciences polymer electrolytes Chemical engineering chemistry Chemistry (miscellaneous) General Materials Science Lithium 0210 nano-technology UV-photopolymerization |
| Zdroj: | Addi. Archivo Digital para la Docencia y la Investigación instname |
| ISSN: | 2633-5409 |
| DOI: | 10.1039/d1ma00857a |
| Popis: | Hybrid solid electrolytes which combine the properties of inorganic and polymeric ion conductors are being investigated for lithium batteries which use lithium metal anodes. The number of inorganic/polymer compositions and their synergy in ion-conducting properties are limited by the hybrid fabrication method and the limited compatibility between both types of materials. Here we report a hybrid solid electrolyte formed by a poly(ethylene glycol) type single-ion polymer network and ceramic garnet-type nanoparticles of Li7−3XAlXLa3Zr2O12 (LLZO) with very high lithium conductivity. The combination of a lithium-single ion polymer matrix with LLZO inorganic particles results in flexible free-standing films by using a fast UV-photopolymerization process with facile control of its composition. This methodology showed excellent dispersion of the LLZO nanoparticles within the gel polymer network with up to 50 wt% ceramic content, as shown in the enviromental ESEM images. These hybrid electrolytes have high ionic conductivity values (1.4 × 10−4 S cm−1 at 25 °C) and high lithium transference number as compared to previous hybrid electrolytes. The effect of LLZO nanoparticle content on the lithium transport was investigated in detail using solid-state nuclear magnetic resonance spectroscopy (NMR). Finally, determination of the critical current density (CCD) before lithium dendrites are initiated has been carried out on both pristine and hybrid electrolytes, so as to assess their potential as solid electrolytes for lithium metal batteries. This work was supported by the European Commission’s funded Marie Sklodowska-Curie project POLYTE-EID (Project No. 765828). L.P. has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska–Curie grant agreement No 797295. |
| Databáze: | OpenAIRE |
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