Skip to Content
Merck
CN

Key Documents

View All Documentation

939773

Sodium difluorophosphate

greener alternative

99.5% trace metals basis, ≤200 ppm acid, anhydrous, battery grade

Synonym(s):

NaDFP battery additive, Sodium phosphorodifluoridate

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

About This Item

Empirical Formula (Hill Notation):
F2O2P·Na
CAS Number:
15587-24-3
Molecular Weight:
123.96
UNSPSC Code:
12352107
NACRES:
NA.21
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

grade

battery grade

Quality Level

100

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

Enabling

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.

pictograms

Corrosion
GHS05

signalword

Danger

hcodes

H314

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

Regulatory Information

新产品

This item has

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCZ8592
MKCW8462

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Articles

Role of Advanced Electrolytes in Sodium Ion Batteries

Discover the role of electrolytes in sodium-ion batteries, to enhance performance, safety, and sustainability in energy storage solutions.

Sodium difluorophosphate: facile synthesis, structure, and electrochemical behavior as an additive for sodium-ion batteries
Huan Yang
Journal of Material Chemistry A, 9, 3637-3647 (2021)

Global Trade Item Number

SKUGTIN
939773-50G04065272095310