Fluorine-free electrolytes for all-solid sodium-ion batteries based on percyano-substituted organic salts
| Autor: | Anna Bitner-Michalska, Piotr Jankowski, M. Kalita, Gene M. Nolis, Władysław Wieczorek, Aldona Zalewska, Grażyna Żukowska, Maciej Dranka, Tomasz Trzeciak, Marek Marcinek, Leszek Niedzicki, Marcin Poterała, Janusz Zachara |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Battery (electricity)
Multidisciplinary Materials science Ethylene oxide Sodium Inorganic chemistry chemistry.chemical_element Ionic bonding 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Article 0104 chemical sciences Matrix (chemical analysis) chemistry.chemical_compound chemistry Thermal stability 0210 nano-technology |
| Zdroj: | Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/srep40036 |
| Popis: | A new family of fluorine-free solid-polymer electrolytes, for use in sodium-ion battery applications, is presented. Three novel sodium salts withdiffuse negative charges: sodium pentacyanopropenide (NaPCPI), sodium 2,3,4,5-tetracyanopirolate (NaTCP) and sodium 2,4,5-tricyanoimidazolate (NaTIM) were designed andtested in a poly(ethylene oxide) (PEO) matrix as polymer electrolytes for anall-solid sodium-ion battery. Due to unique, non-covalent structural configurations of anions, improved ionic conductivities were observed. As an example, “liquid-like” high conductivities (>1 mS cm−1) were obtained above 70 °C for solid-polymer electrolyte with a PEO to NaTCP molar ratio of 16:1. All presented salts showed high thermal stability and suitable windows of electrochemical stability between 3 and 5 V. These new anions open a new class of compounds with non-covalent structure for electrolytes system applications. |
| Databáze: | OpenAIRE |
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