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936006

Sigma-Aldrich

Sodium bis(trifluoromethanesulfonyl)imide solution

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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

100

form

solution

greener alternative product characteristics

Design for Energy Efficiency
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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

Enabling

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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]

Signal Word

Danger

Hazard Statements

H226,H302,H314,H373

Hazard Classifications

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

Target Organs

Kidney

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

77.0 °F

Flash Point(C)

25 °C

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Certificates of Analysis (COA)

Lot/Batch Number
MKCW2578
MKCW2577

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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)
Non-aqueous electrolytes for sodium-ion batteries
A. Ponrouch, et al.
Journal of Material Chemistry A, 3, 22-42 (2015)

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