MSE PRO™ 99.5% Sodium Difluorophosphate (NaPO₂F₂) Electrolyte Additive for Sodium Ion Battery

Sodium ion battery (SIB) is a type of rechargeable battery analogous to the lithium-ion battery but using sodium ions (Na⁺) as the charge carriers. Sodium-ion battery can be the best alternative to lithium-ion batteries, owing to their similar electrochemistry, non-toxicity, elemental-abundance and the low-cost of sodium.

Sodium Difluorophosphate (NaPO₂F₂, NaDFP) is a white powder used for SIB electrolyte additive. Difluorophosphate (PO₂F₂⁻, DFP) electrolyte additives is widely used in lithium and potassium-ion batteries to improves their lifetime. The modification of DFP anions can effectively remit the electrode/electrolyte interfacial reaction and relieve the increase of internal resistance during cycling. Therefore, NaDFP is also explored as an additive for optimizing SIB performance.

Specification

Item	Value
Product Name	Sodium Difluorophosphate
Chemical Formula	NaPO₂F₂
Synonym(s)	NaDFP
SKU#	CM1068
CAS#	15587-24-3
Molecular Weight	123.9 g/mol
Appearance	White powder
Purity	≥99.5%
Moisture	≤200 ppm
Free acid (HF)	≤200 ppm
Free chloride	≤10 ppm
Sulphate	≤10 ppm
Turbidty (NTU)	≤10 ppm
Fe	≤10 ppm
K	≤10 ppm
Li	≤10 ppm
Ca	≤10 ppm
Cd	≤5 ppm
Cr	≤5 ppm
Cu	≤5 ppm
Mg	≤5 ppm
Ni	≤5 ppm

References

[1] "Lithium difluorophosphate as a promising electrolyte lithium additive for high-voltage lithium-ion batteries." ACS applied energy materials 1.6 (2018): 2647-2656.

[2] "Sodium difluorophosphate: facile synthesis, structure, and electrochemical behavior as an additive for sodium-ion batteries." Journal of Materials Chemistry A 9.6 (2021): 3637-3647.

[3] "Synthesis and evaluation of Difluorophosphate salt electrolyte additives for lithium-ion batteries." Journal of The Electrochemical Society 167.10 (2020): 100538.

[4] "Synthesis of fluorosulfates and difluorophosphates by the heterolytic cleavage of polysulfuryl fluorides and pyrophosphoryl fluoride with 2-substituted perfluoroisopropoxide and fluoroalkoxide anions." Inorganic Chemistry 9.1 (1970): 104-106.

MSE PRO™ 99.5% Sodium Difluorophosphate (NaPO2F2) Electrolyte Additive for Sodium Ion Battery

MSE PRO™ 99.5% Sodium Difluorophosphate (NaPO₂F₂) Electrolyte Additive for Sodium Ion Battery