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Sigma-Aldrich

Sodium bis(trifluoromethanesulfonyl)imide solution

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greener alternative

in ethylene carbonate, dimethyl carbonate, 1.0 M NaTFSI in EC/DMC=50/50 (v/v), battery grade

Synonym(s):

1.0 M NaTFSI in EC/DMC electrolyte

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About This Item

UNSPSC Code:
12352600

grade

battery grade

Quality Level

form

solution

greener alternative product characteristics

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concentration

0.95-1.05 M (NaPF6)

impurities

≤100 ppm H2O

anion traces

chloride (Cl-): ≤200 ppm
sulfate (SO42-): ≤200 ppm

application(s)

battery manufacturing

greener alternative category

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General description

Sodium bis(trifluoromethanesulfonyl)imide solution in ethylene carbonate and dimethylcarbonate, 1.0 M NaTFSI in EC/DMC=50/50 (v/v) is a clear solution of battery grade sodium bis(trifluoromethanesulfonyl)imide (NaTfSI) dissolved in binary mixture of EC/DMC=50/50 (v/v).
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Application

The main application of 1.0 M NaTFSI in EC/DMC=50/50 (v/v), battery grade is as an electrolyte for sodium-ion batteries. NaTFSI-based electrolytes have advantages over NaPF6-based electrolytes because they are less sensitive to hydrolysis, safer to handle, and are more stable thermally and electrochemically. NaTFSI offers improved higher thermal stability compared to NaPF6 and NaBF4, and higher conductivity than NaTfO. The blend of ethylene carbonate and dimethyl carbonate achieves a low viscosity and good wettability of most polyolefin separators.[1,2]

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Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Corr. 1B - STOT RE 2 Oral

target_organs

Kidney

Storage Class

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

77.0 °F

flash_point_c

25 °C


Certificates of Analysis (COA)

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Non-aqueous electrolytes for sodium-ion batteries
A. Ponrouch, et al.
Journal of Material Chemistry A, 3, 22-42 (2015)
SEI Composition on Hard Carbon in Na-Ion Batteries After Long Cycling: Influence of Salts (NaPF6, NaTFSI) and Additives (FEC, DMCF)
J. Fondard ,et al.
Journal of the Electrochemical Society, 167 (2020)

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