KFTFSI (Potassium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide, 99.9%) Powder as Electrolyte Salt for Potassium-Ion Battery, 5 g/bottle, CPIBESKFTFSI
Use your own shipping account?
We support FedEx, UPS, and DHL third-party billing for institutional customers.
Place your order first, then email shipping@echemsupplies.com with your account details and order number. We'll generate the label using your account and refund your shipping charges, less a handling fee.
The KFTFSI (Potassium (Fluorosulfonyl)(trifluoromethanesulfonyl)imide) salt, is a next-generation electrolyte salt that is rapidly gaining prominence in high-performance potassium-ion batteries (PIBs). It is often considered the most promising candidate to supplement or eventually replace the conventional KPF6.
KFTFSI provides several significant improvements over the standard KPF6, such as (1) Superior Ionic Conductivity; (2) High Thermal Stability; (3) Enhanced Hydrolysis Resistance; (4) Compatibility with Li Metal.
| Part Number |
CPIBESKFTFSI (C-PIB-ES-KFTFSI) |
| Chemical Formula |
CF4NKO4S2  |
| Appearance |
White Powder |
| Purity |
99.9% (Battery Grade) |
| Molecular Weight | 269.23 g/mol |
| Melting Point | 101 °C |
| Package Size | 5 g/bottle |
Notes: Please store the KFTFSI powder in the glovebox due to its sensitivity to humidity and oxygen
References:
- J. Chidiac, et al. Role of FTFSI Anion Asymmetry on Physical Properties of AFTFSI (A=Li, Na and K) Based Electrolytes and Consequences on Supercapacitor Application, ChemPhysChem, 2021, 22, 1863-1879.
- T. K. Kumaresan, et al. Highly Concentrated Asymmetric KTFSI for Aqueous Potassium Ion Batteries, Adv. Energy Mater., 2024, 14, 2402011.