21324-40-3 | Lithium hexafluorophosphate (LiPF₆)

Chemical type

• Lithium salt
• Standard electrolyte solute for lithium-ion batteries

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• Lithium salt
• Conducting salt

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Key properties

• Decomposes at high voltage/temperature to form hydrofluoric acid (HF)
• Source of PO₂F₂ and other phosphorus-containing species in CEI

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• Provides Li⁺ ions for ionic conductivity
• Decomposes to PF₅ and HF in presence of water or heat
• Chemical instability attacks SiOₓ layers and binders
• Triggers defluorination of FEC

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• Primary conducting salt in commercial lithium-ion battery electrolytes

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• Dissolved at 1 M in EC/EMC solvents for LIB electrolytes
• Base salt in state-of-the-art formulations for high-voltage cells

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Classification by use

• Electrolyte salts for energy storage devices
• Chemicals contributing to interfacial degradation in high-voltage systems

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• Lithium salts for battery electrolytes
• Ionic conductors in LIBs

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A trustworthy factory and manufacturer

1. [Cite:1] Aluminum metaphosphate-derived CEI suppresses interfacial degradation of NCM811 at 4.5 V and 60 °C, Electrochemistry Communications, Volume 184, March 2026, 108114
2. [Cite:2] Sulfonyl diimidazole to stabilize fluoroEthyl methyl carbonate-based SEI in high-voltage Li ion cells with a SiOx containing negative electrode, Energy Storage Materials, Volume 72, September 2024, 103735