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Key Documents

936022

Sigma-Aldrich

Sodium hexafluorophosphate

new
greener alternative

99.9% trace metals basis, anhydrous, battery grade

Sinónimos:

NaPF6, Sodium hexafluorophosphate(v)

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About This Item

Fórmula lineal:
NaPF6
Número de CAS:
Peso molecular:
167.95
MDL number:
UNSPSC Code:
12352104

grade

battery grade

Quality Level

assay

99.9% trace metals basis

form

white powder

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

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impurities

≤100 ppm Cl
≤100 ppm Sulfate
≤1500 ppm trace metals

mp

>200 °C (lit.)

density

2.369 g/mL at 25 °C (lit.)
2.369 g/mL

application(s)

battery manufacturing

greener alternative category

SMILES string

[Na+].F[P-](F)(F)(F)(F)F

InChI

1S/F6P.Na/c1-7(2,3,4,5)6;/q-1;+1

InChI key

KMADQUOCJBLXRP-UHFFFAOYSA-N

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General description

Sodium hexafluorophosphate is a white powder and is soluble in water and polar organic solvents, including many of the carbonates and ethers commonly used in liquid battery electrolytes. Our battery grade NaPF6 meets both high level of purity and low moisture to ensure reliable and consistent performance for battery research.
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Application

Battery grade sodium hexafluorophosphate (NaPF6) is a reliable precursor salt for sodium ion batteries (NIBs). NaPF6 is commonly used as the source of sodium ions in liquid electrolytes due to its excellent properties including high solubility in organic solvents, high anodic electrochemical stability, and ability to form fluoride-rich solid electrolyte interphases (SEI) Often NaPF6 is used in research to design electrolytes that enhance the energy/power density or cycle life of sodium-ion batteries. For example, studies have shown that NaPF6-based electrolytes often offer the best performance, especially in conjunction with additives like FEC Additionally, NaPF6 is widely used because it is compatible with most battery materials including sodium metal, hard carbon, most oxide and phosphate cathode materials, as well as copper and aluminum current collectors. As a result, NaPF6-based electrolytes are the go-to for sodium-ion battery research and development.

pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1B

Storage Class

8A - Combustible corrosive hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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Visite la Librería de documentos

Impact of the electrolyte salt anion on the solid electrolyte interphase formation in sodium ion batteries
Eshetu G G, et al.
Nano Energy, 55, 327-340 (2019)
Comparison of Ionic Transport Properties of Non-Aqueous Lithium and Sodium Hexafluorophosphate Electrolytes
Landesfeind J, et al.
Journal of the Electrochemical Society, 168 (2021)
SEI Composition on Hard Carbon in Na-Ion Batteries After Long Cycling: Influence of Salts (NaPF6, NaTFSI) and Additives (FEC, DMCF)
Fondard J, et al.
Journal of the Electrochemical Society, 167, 070526-070526 (2020)

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