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200913

Sigma-Aldrich

Potassium hexafluorophosphate

≥99%

Synonym(s):

Monopotassium hexafluorophosphate

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About This Item

Linear Formula:
KPF6
CAS Number:
17084-13-8
Molecular Weight:
184.06
EC Number:
241-143-0
MDL number:
MFCD00011412
UNSPSC Code:
12352302
PubChem Substance ID:
24851982
NACRES:
NA.23

Assay

≥99%

form

solid

technique(s)

ion chromatography: suitable

mp

575 °C (lit.)

density

2.75 g/mL at 25 °C (lit.)

SMILES string

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

InChI

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

InChI key

YZDGRYDIGCWVND-UHFFFAOYSA-N

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Application

Potassium hexafluorophosphate can be used as an electrolyte additive to improve the:
  • Electrochemical performance of an anode-free lithium metal battery.
  • Cycling stability and Li Coulombic efficiency of lithium-sulfur(Li–S) batteries.
It can also be used as interface modification material to passivate interface defects in perovskite solar cells.

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Jingru Li et al.
ACS applied materials & interfaces, 12(50), 56017-56026 (2020-12-04)
Uncontrollable dendrite growth and low Coulombic efficiency are the two main obstacles that hinder the application of rechargeable Li metal batteries. Here, an optimized amount of potassium hexafluorophosphate (KPF6, 0.01 M) has been added into the 2 M LiTFSI/ether-based electrolyte
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