Py13PF6 (1-Methyl-1-propylpyrrolidinium hexafluorophosphate, >99.9%) Ionic Liquid as Battery Electrolyte Solvent, 25-100 g/bottle, CBESPy13PF6

Py13PF6 (1-Methyl-1-propylpyrrolidinium hexafluorophosphate) is a room-temperature ionic liquid (RTIL) that pairs an aliphatic, 5-membered pyrrolidinium cation with the phosphorus-based hexafluorophosphate (PF6^-) anion. By combining the low viscosity and superior reduction resistance of a 5-membered saturated ring with the familiar PF6^- anion, this formulation attempts to bridge conventional lithium salt chemistry with ionic liquid thermal safety. However, like other PF6-based ionic liquids, its practical implementation comes with distinct chemical hurdles.

The key physicochemical features of Py13PF6 are: (1) Good Cathodic Stability: Unlike aromatic cations (such as imidazolium in EMIMPF6), the saturated 5-membered pyrrolidinium ring (Py13) exhibits strong resistance against reductive decomposition, making it more compatible with carbonaceous or alkali metal anodes. (2) Improved Transport Dynamics vs. Piperidinium: Because the 5-membered pyrrolidinium ring is less bulky and conformationally constrained than 6-membered piperidinium rings (like PP13), Py13-based ionic liquids typically exhibit lower fluid friction and moderately better ionic mobility at comparable temperatures. (3) Thermal Safety & Non-Volatility: It is non-flammable, possesses negligible vapor pressure, and maintains high thermal stability, eliminating the fire risks inherent to volatile organic carbonate solvents.

Part Number	CBESPy13PF6 (C-BES-Py13PF6)
CAS	327022-58-2
Chemical Formula	C₈H₁₈F₆NP
Appearance	White or pale yellow powder
Purity	>99.9% (Battery Grade)
Molecular Weight	273.20 g/mol
Melt Point	~112 °C
Package Size	25 g, 50 g, and 100 g/bottle

Notes: Please try to store the Py13FSI liquid in a dry place (dryroom and glovebox are preferred). 

References: 

1. Q. Zhou, et al. Physical and Electrochemical Properties of N-Alkyl-N-methylpyrrolidinium Bis(fluorosulfonyl)imide Ionic Liquids: PY13FSI and PY14FSI, J. Phys. Chem. B 2008, 112, 43, 13577–13580.
2. Y. Gao, et al. PY13FSI-Infiltrated SBA-15 as Nonflammable and High Ion-Conductive Ionogel Electrolytes for Quasi-Solid-State Sodium-Ion Batteries, ACS Appl. Mater. Interfaces 2020, 12, 20, 22981–22991.