Composite PEOn:NaTFSI polymer electrolyte: Preparation, thermal and electrochemical characterization

Moreno, Judith Serra; Armand, Michel; Berman, Marc B.; Greenbaum, Steven; Scrosati, B.; Panero, S.

doi:10.1016/j.jpowsour.2013.09.137

Cited by 146 publications

(94 citation statements)

References 25 publications

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“…Solid-polymer electrolytes doped with NaPF 6 , NaTCP and NaTIM, at O:Na molar ratios of 16:1, showed optimal σ values to other concentrations; whereas, the optimum concentration for NaPCPI membrane was found to be 20:1. Ionic conductivity values of PEO-based electrolytes studied in this paper are comparable, if not better, to other Na-salts reported in the literature202124.…”

Section: Resultssupporting

confidence: 86%

“…At high temperature (70 °C), PEO 16 NaTCP showed ionic conductivity values (so-called “liquid-like”) greater than 1 mS cm −1 . Other research groups report such conductivities at or above 80 °C for PEO 20 NaTFSI membranes, however this salt contains fluorine2021. Additionally, and according to Supporting Table 4, electrolytes based on PEG-500 present similar trends.…”

Section: Resultsmentioning

confidence: 54%

“…that oxidation of PEO 20 NaTFSI membranes occurs above 4.8 V vs . Na + /Na21. Moreover, electrolytes based on PEG-500 present similar trends of stability window (Supporting Figure 12).…”

Section: Resultsmentioning

confidence: 68%

“…Reported salts for PEO-based, solid-polymer electrolytes in sodium-ion battery applications include sodium trifluoromethane sulfonate (NaCF 3 SO 3 )15161718, sodium thiocyanate (NaSCN), sodium tetraflouroborate (NaBF 4 )19, sodiumbis(trisfluoromethanesulfonyl)imide (NaTFSI)202122, sodium perchlorate (NaClO 4 )23 and sodium hexafluorophosphate (NaPF 6 )24. Generally, these membranes and their lithium analogues show ionic conductivities on the order of 10 −5 S cm −1 or less at room temperature, which is not enough for rechargeable batteries2526.…”

mentioning

confidence: 99%

“…Generally, these membranes and their lithium analogues show ionic conductivities on the order of 10 −5 S cm −1 or less at room temperature, which is not enough for rechargeable batteries2526. NaTFSI is a promising salt as it shows higher ionic conductivities in PEO-based, solid-polymer electrolytes at room temperature (0.1 mS cm −1 ) and about 1 mS cm −1 above 80 °C21.…”

mentioning

confidence: 99%

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Fluorine-free electrolytes for all-solid sodium-ion batteries based on percyano-substituted organic salts

Bitner-Michalska

Nolis

Żukowska

et al. 2017

Sci Rep

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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.

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 54%

“…that oxidation of PEO 20 NaTFSI membranes occurs above 4.8 V vs . Na + /Na21. Moreover, electrolytes based on PEG-500 present similar trends of stability window (Supporting Figure 12).…”

Section: Resultsmentioning

confidence: 68%