Liquid electrolytes containing new tailored salts for sodium-ion batteries
Anna Bitner-Michalska , Anna Krztoń-Maziopa , Grażyna Żukowska , Tomasz Trzeciak , Władysław Wieczorek , Marek Marcinek
AbstractSodium 4,5-dicyano-2-(pentafluoroethyl)imidazolate (NaPDI) and 4,5-dicyano-2-(trifluoromethyl) imidazolate (NaTDI) were tested in order to find the optimal solvent mixture composition for possible application in sodium battery electrolytes. The chemical structure of the above imidazolate salts is based on the stable imidazolium ring architecture substituted with electrophilic groups via carbon atoms. It has been shown here that electrolytes with these new salts exhibit high conductivity at room temperature and excellent electrochemical stability up to 4.5 V vs. sodium metal. Moreover, both salts are not corrosive to Al foil. The high performance of the new electrolytes in sodium battery technology was also confirmed by compatibility tests carried out with NaxCoO2 cathode materials.
|Journal series||Electrochimica Acta, ISSN 0013-4686|
|Publication size in sheets||0.5|
|Keywords in English||Liquid electrolyte; Sodium; Sodium-ion batteries|
|Score|| = 40.0, 31-01-2020, ArticleFromJournal|
= 40.0, 31-01-2020, ArticleFromJournal
|Publication indicators||= 9; = 8; : 2016 = 1.185; : 2016 = 4.798 (2) - 2016=4.63 (5)|
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