939773
Sodium difluorophosphate
99.5% trace metals basis, ≤200 ppm acid, anhydrous, battery grade
Synonym(s):
NaDFP battery additive, Sodium phosphorodifluoridate
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About This Item
Empirical Formula (Hill Notation):
F2O2P·Na
CAS Number:
Molecular Weight:
123.96
UNSPSC Code:
12352107
NACRES:
NA.21
grade
battery grade
Quality Segment
assay
99.5% trace metals basis
form
powder
greener alternative product characteristics
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product
impurities
≤200 ppm acid, ≤200 ppm free acid, ≤250 ppm H2O
solubility
soluble (carbonates: soluble(lit.)), soluble (ethers: soluble(lit.))
anion traces
chloride (Cl-): ≤10 ppm, sulfate (SO42-): ≤10 ppm
cation traces
Ca: ≤10 ppm, Fe: ≤10 ppm, K: ≤10 ppm, Li: ≤10 ppm
application(s)
battery manufacturing
greener alternative category
SMILES string
[Na].O=P(F)(F)O
General description
Our battery grade sodium difluorophosphate (NaDPF) is a high-purity, anhydrous compound, synthesized carefully to reduce trace acid, chloride, and sulfate impurities. The crystalline NaDPF is soluble (up to ~1 wt.%) in carbonate blends used in battery electrolytes, like ethylene carbonate and dimethyl carbonate.
Sodium Difluorophosphate is an effective electrolyte additive for sodium-ion batteries that supports green energy storage. It provides electrochemical stability and forms a strong solid electrolyte interphase (SEI), improving battery safety and lifespan. Its easy synthesis and compatibility with battery materials make it key for sustainable and durable sodium-based energy storage. Click here for more information.
Application
Sodium difluorophosphate is used in sodium-ion battery research in liquid electrolyte formulations as an additive. It is intended to optimize the performance and stability of sodium-ion batteries. When used as an additive in the liquid electrolyte, it has been shown to improve the efficiency of sodium metal deposition and dissolution, reduce overpotential, and enhance the stability of the solid-electrolyte interphase (SEI) layer on the negative electrode, leading to high coulombic efficiency, excellent rate capability, and long cycle life.
signalword
Danger
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Corr. 1B
Storage Class
8A - Combustible corrosive hazardous materials
flash_point_f
Not applicable
flash_point_c
Not applicable
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