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Merck
CN

936030

Sodium triflate

greener alternative

≥99.5% trace metals basis, anhydrous, battery grade

Synonym(s):

Sodium trifluoromethanesulfonate, NaTfO, Sodium triflate, Trifluoromethanesulfonic acid sodium salt

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About This Item

Linear Formula:
CF3SO3Na
CAS Number:
Molecular Weight:
172.06
UNSPSC Code:
12352104
Beilstein/REAXYS Number:
3728797
MDL number:
NACRES:
NA.21
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Product Name

Sodium triflate, ≥99.5% trace metals basis, anhydrous, battery grade

InChI key

XGPOMXSYOKFBHS-UHFFFAOYSA-M

SMILES string

[Na+].[O-]S(=O)(=O)C(F)(F)F

InChI

1S/CHF3O3S.Na/c2-1(3,4)8(5,6)7;/h(H,5,6,7);/q;+1/p-1

grade

battery grade

assay

≥99.5% trace metals basis

form

powder or crystals

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sustainability

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impurities

≤5000 ppm trace metals

mp

253-255  °C
253-255 °C (lit.)

application(s)

battery manufacturing

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Quality Level

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Application

Our sodium trifluoromethanesulfonate offers the high purity and low water content ideal for use as an electrolytic salt in sodium-ion batteries. NaTfO is compatible with many cathode and anode materials used in sodium-ion batteries, including sodium metal anodes used in sodium metal batteries Additionally, NaTfO dissolved in diglyme has enabled the use of graphite in reversible sodium-ion batteries When electrolytes comprised of NaTfO dissolved in diglyme, tetraglyme, or 1,2-dimethoxyethane are used with graphite anodes, solvated sodium co-intercalates along with its anion facilitating fast kinetics and high charge rates Researchers have also found that sodium trifluoromethanesulfonate performs well with layered chalcogenides like FeS2 and CoSe2 when other electrolytes perform poorly. Lastly, high-purity NaTfO dissolved in diglyme and 1,3-dioxolane has shown promise as an electrolyte in sodium-oxygen batteries form a thin stable passivation film on the alkali metal anode.

General description

Sodium trifluoromethanesulfonate, or sodium triflate (NaTfO), is a white, crystalline salt. It is hygroscopic and deliquescent. NaTfO is soluble in water, acetonitrile, some carbonates (including dimethyl carbonate and propylene carbonate, but insoluble in diethyl carbonate), glymes (including monoglyme, diglyme, and triglyme), dimethoxyethane, and most polar organic solvents. It is thermally stable and melts at 253 - 255 °C. NaTfO can be prepared by reaction of sodium sulfate and barium trifluoromethanesulfonate. Alternatively, it can be prepared by reaction between sodium dithionite and bromotrifluoromethane.
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Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

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Extending the low-temperature operation of sodium metal batteries combining linear and cyclic ether-based electrolyte solutions
Wang C, et al.
Nature Communications, 13, 4934-4934 (2022)
Highly stable and ultrafast electrode reaction of graphite for sodium ion batteries
Zhu Z, et al.
Journal of Power Sources, 293, 626-634 (2015)
Urchin-Like CoSe2 as a High-Performance Anode Material for Sodium-Ion Batteries
Zhang K, et al.
Advanced Functional Materials , 26, 6728?6735- 6728?6735 (2016)
Prevention of dendrite growth and volume expansion to give high-performance aprotic bimetallic Li-Na alloy-O2 batteries
Ma J, et al.
Nature Chemistry, 11, 64-70 (2019)
The critical role of phase-transfer catalysis in aprotic sodium oxygen batteries
Xia C, et al.
Nature Chemistry, 7, 496-501 (2015)

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