Potassium nonafluoro-1-butanesulfonate

CAS Number 29420-49-3

Chemistry Building Blocks, Fluorinated Building Blocks, Materials, Monomers, Non-Heterocyclic Building Blocks

Potassium nonafluoro-1-butanesulfonate MSDS

Potassium nonafluoro-1-butanesulfonate CAS 29420-49-3

A perfluorobutyl sulfonate salt

Directly applied as an additive in perovskite solar cells and lithium batteries, and serving as a precursor for ionic liquids

Specifications | MSDS | Literature and Reviews

Potassium nonafluoro-1-butanesulfonate (CAS number 29420-49-3) is a potassium salt of perfluorobutyl sulfonic acid. The sulfonate group can coordinate to metal centres, acting as an anchoring unit. Therefore, potassium nonafluoro-1-butanesulfonate is commonly used as an interface additive in lithium-ion batteries and perovskite solar cells. It forms a stable passivation layer on cathode material, LiNi_0.5Mn_1.5O₄ (LNMO), leading to minimum capacity decay after 1000 cycles at 1C and 5V. Potassium nonafluoro-1-butanesulfonate adjusts the energy matching of SnO₂ electron transport layer and the perovskite in perovskite solar cells. It assists in the passivation of the defects at the interface, resulting in an increase in powder conversion efficiency (PCE) from 20.6% to 23.2%.

Potassium nonafluoro-1-butanesulfonate is also employed in the synthesis of ionic liquids, in cooperation with pyrrolidinium salts. These ionic liquids modify the surface of the cathode materials in lithium batteries with enhanced stability and performance.

Enhance stability and performance

used as an additive

Fluorinated potassium butanesulfonate building block

for ionic liquid, perovskite solar cells, and battery research

Low Cost

Competitively priced, high quality product

High purity

>98% High purity

General Information

CAS Number	29420-49-3
Chemical Formula	C₄F₉KO₃S
Full Name	Potassium 1,1,2,2,3,3,4,4,4-nonafluoro-1-butanesulfonate
Molecular Weight	338.19 g/mol
Synonyms	Potassium nonaflate, Potassium nonafluorobutanesulfonate, Potassium perfluorobutanesulfonate, KPBS
Classification / Family	Fluorinated building blocks, Sulfonate anchoring units, Perfluoroalkyls, Ionic liquids, Batteries, Perovskite solar cells, Solid additives

Chemical Structure

Product Details

Purity	98%
Melting Point	T_m > 280 °C
Appearance	White powder

MSDS Documentation

Potassium nonafluoro-1-butanesulfonate MSDS Sheet

Literature and Reviews

One thousandth of quaternity slurry additive enables one thousand cycle of 5V LNMO cathode, J. Zhang et al., Energy Storage Mater., 64, 103060 (2024); DOI: 10.1016/j.ensm.2023.103060.
High-performance pyrrolidinium-based poly(ionic liquid) binders for Li-ion and Li-air batteries, S. Vauthier et al., Mater. Today Chem., 27, 101293 (2023); DOI: 10.1016/j.mtchem.2022.101293.
Multifunctional molecule of potassium nonafluoro-1-butanesulfonate for high-efficient perovskite solar cells, Z. Wu et al., J. Chem. Eng., 449, 137851 (2022); DOI: 10.1016/j.cej.2022.137851.

A long-lasting dual-function electrolyte additive for stable lithium metal batteries, D. Wang et al., Nano Energy, 79, 104889 (2020); DOI: 10.1016/j.nanoen.2020.104889.
N-methyl-N-alkylpyrrolidinium nonafluoro-1-butanesulfonate salts: ionic liquid properties and plastic crystal behaviour, S. Forsyth et al., Green Chem., 8, 256–261 (2006); DOI: 10.1039/B512902H.