What use for polysilsesquioxane lithium salts in lithium batteries?
| Autor: | Ahmad Mehdi, Patrick Judeinstein, Mathieu Meyer, André Vioux, Lydie Viau, Sophie Monge |
|---|---|
| Přispěvatelé: | Univers, Transport, Interfaces, Nanostructures, Atmosphère et environnement, Molécules (UMR 6213) (UTINAM), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Laboratoire Léon Brillouin (LLB - UMR 12), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Chemistry Diffusion Inorganic chemistry Salt (chemistry) chemistry.chemical_element 02 engineering and technology General Chemistry Nuclear magnetic resonance spectroscopy [CHIM.MATE]Chemical Sciences/Material chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound Monomer Materials Chemistry Lithium 0210 nano-technology Acetonitrile Lithium Cation ComputingMilieux_MISCELLANEOUS |
| Zdroj: | New Journal of Chemistry New Journal of Chemistry, Royal Society of Chemistry, 2016, ⟨10.1039/C6NJ00979D⟩ New Journal of Chemistry, 2016, ⟨10.1039/C6NJ00979D⟩ |
| ISSN: | 1144-0546 1369-9261 |
| DOI: | 10.1039/C6NJ00979D⟩ |
| Popis: | Aryl-containing lithium perfluorosulfonates form unquestionably a family of salts having fairly good electrochemical performances, especially high cation transference numbers. Here, this family was extended to polysilsesquioxanes in which every silicon atom bears one lithium perfluorosulfonate group, via a sol–gel synthesis involving an original organotrialkoxysilane salt precursor. Despite their high molecular weights, these macro polyanions were found to be highly soluble in polar solvents such as acetonitrile or ethanol. NMR spectroscopy and SEC analysis were consistent with high molecular weight species and a random arrangement of cyclic and/or branched structures. These salts featured a wide electrochemical stability window up to 4 V in acetonitrile solution, while PFG NMR spectroscopy disclosed that the self diffusion coefficient of the macro polyanion decreased significantly with respect to a parent monomer salt chosen as a reference. The potential of high molecular weight polysilsesquioxane salts as lithium source nanofillers in liquid and polymer electrolytes was then discussed in light of the calculated lithium cation transference number. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|