Lithium-ion-conductive sulfide polymer electrolyte with disulfide bond-linked PS4 tetrahedra for all-solid-state batteries
| Autor: | Futoshi Utsuno, Masanari Takahashi, Mari Yamamoto, Atsutaka Kato, Higuchi Hiroyuki |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Materials science Sulfide chemistry.chemical_element Polymer Electrolyte Anisole chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials Electrode TA401-492 General Materials Science Lithium Solubility Dispersion (chemistry) Materials of engineering and construction. Mechanics of materials |
| Zdroj: | Communications Materials, Vol 2, Iss 1, Pp 1-8 (2021) |
| ISSN: | 2662-4443 |
| Popis: | Due to their high conductivity and interface formability, sulfide electrolytes are attractive for use in high energy density all-solid-state batteries. However, electrode volume changes during charge-discharge cycling typically cause mechanical contact losses at the electrode/electrolyte interface, which leads to capacity fading. Here, to suppress this contact loss, isolated PS43- anions are reacted with iodine to prepare a sulfide polymer electrolyte that forms a sticky gel during dispersion in anisole and drying of the resulting supernatant. This polymer, featuring flexible (–P–S–S–)n chains and enhanced solubility in anisole, is applied as a lithium-ion-conductive binder in sheet-type all-solid-state batteries, creating cells with low resistance and high capacity retention. Solid polymer electrolytes that are resistant to volume changes during charge-discharge cycling are important for all-solid-state batteries. Here, a sulfide polymer electrolyte is fabricated by reacting PS43− anions with iodine, obtaining cells with low resistance and high capacity retention. |
| Databáze: | OpenAIRE |
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