Liquid electrolytes containing new tailored salts for sodium-ion batteries

Opportunities in Na/K [hexacyanoferrate] frameworks for sustainable non-aqueous Na+/K+ batteries

“…Ester-based solvents are composed of EC, PC, DEC, DMC, EMC, and ether-based solvents, including DME, diethylene glycol dimethyl ether (DG), and tetra-ethylene glycol dimethyl ether (TG). The commonly available sodium salts are NaClO 4 , NaPF 6 , NaBF 4 , 158 sodium bis(fluorosulfonyl)imide (NaFSI), 159 sodium tri(fluoromethanesulfonyl)imide (NaTFSI), 160 sodium difluoro(oxalato)borate (NaDFOB), 161 sodium-4,5-dicyano-2-(trifluoromethyl)imidazolate (NaTDI), 162 sodium-4,5-dicyano-2-(pentafluoroethyl)imidazolate (NaPDI), 162 sodium bis[oxalate] borate (NaBOB), 163 sodium bis[salicylato(2)] borate (NaBSB), 163 and sodium[salicylatebenzenediol]borate (NaBDSB). 163 Among these salts, NaPF 6 and NaClO 4 are the most common salts consistently used for AMHCF cathodes due to their high ion conductivity.…”

Systematic Studies on Liquid Sodium 4,5‐dicyano‐2‐(trifluoromethyl)imidazolate (NaTDI)‐Based Electrolytes and Its Impact on the Cycling Behaviour Against Wet Impregnated WI‐NaNMC and Prussian White Cathodes

“…Also in this case, the purpose of the research work was to select or obtain new materials for the construction of cell components [ 19 ] on the anodic and cathodic side. [ 18 ]…”

“…New salts have shown promising properties from the point of view of application, i.e., excellent thermal stability and high electrolyte conductivity values ​​in liquid systems: 0.75 m NaTDI (EC/DMC): 11.9 (mS cm −1 ); 0.75 m NaPDI (EC/DMC): 6.0 (mS cm −1 ) and very considerable width of window of electrochemical stability (over 4.5 V). [ 18 ]…”

“…[10] New salts have shown promising properties from the point of view of application, i.e., excellent thermal stability and high electrolyte conductivity values in liquid systems: 0.75 m NaTDI (EC/DMC): 11.9 (mS cm −1 ); 0.75 m NaPDI (EC/DMC): 6.0 (mS cm −1 ) and very considerable width of window of electrochemical stability (over 4.5 V). [18] Also in this case, the purpose of the research work was to select or obtain new materials for the construction of cell components [19] on the anodic and cathodic side. [18] The logical consequence of these research is a new thread aiming at obtaining better cathodes.…”

“…[18] Also in this case, the purpose of the research work was to select or obtain new materials for the construction of cell components [19] on the anodic and cathodic side. [18] The logical consequence of these research is a new thread aiming at obtaining better cathodes. So far the two strands of this research are to obtain classical oxides by new methods or to produce new lithium materials.…”