Potassium Hexafluorophosphate(KPF₆),Battery Grade 500g

Potassium Hexafluorophosphate (KPF₆), Battery Grade 500g

Chemical Name: Potassium Hexafluorophosphate
CAS Number: 17084-13-8
Product Code: EL17084-13-8
Grade: Battery Grade
Brand: Xnergy

Product Introduction

Potassium hexafluorophosphate (KPF₆) is the primary electrolyte salt for potassium-ion battery (KIB) research, serving the same role in K-ion systems that LiPF₆ plays in Li-ion and NaPF₆ plays in Na-ion batteries. The large K⁺ radius (1.38 Å) and the favorable desolvation energy of K⁺ in propylene carbonate and other solvents give KPF₆-based electrolytes unexpectedly high ionic conductivity, making them attractive for room-temperature battery research despite the larger ion size. KPF₆ is compatible with graphite anodes — K⁺ can intercalate into graphite to form KC₈ — making graphite a practical and cost-effective anode for K-ion research cells. Xnergy supplies battery-grade KPF₆ for K-ion battery research and development.

Key Features

• Standard K-ion electrolyte salt — the most widely adopted salt for potassium-ion battery research; analogous to LiPF₆ and NaPF₆
• High ionic conductivity in PC and carbonate blends — K⁺ weak solvation in carbonate solvents enables high conductivity at moderate concentrations
• Graphite anode compatible — K⁺ intercalates into graphite (KC₈), enabling cost-effective graphite anode K-ion cells
• PF₆⁻ anion stability — well-characterized electrochemical behavior; broad compatibility with carbonate electrolyte solvents
• Purity ≥99% / H₂O ≤10 ppm / Acid ≤10 ppm — battery-grade quality for K-ion electrolyte research
• Flexible volumes — available from 500 g for laboratory use

Specification

Application Areas

• Standard KPF₆/PC or KPF₆/EC-DMC electrolyte preparation for K-ion half-cell and full-cell research
• Graphite anode K⁺ intercalation/de-intercalation studies (KC₈ formation)
• Prussian blue analog (PBA) cathode evaluation for K-ion batteries
• Hard carbon anode performance comparison in Na-ion vs. K-ion systems
• K-ion coin cell and Swagelok cell assembly for fundamental electrochemistry research
• Comparative alkali-metal salt study: KPF₆ vs. KFSI vs. KTFSI for K-ion electrolyte optimization

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• Browse the full Salts category.