PEC {(Poly(ethylene carbonate)} Granulate as Solid-State Battery Electrolyte, 20-100 g/bottle, CBSSEPEC
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Poly(ethylene carbonate) (PEC) has emerged as a highly promising polymer matrix for solid-state batteries, particularly as an alternative to the traditional Poly(ethylene oxide) (PEO). While PEO-based systems suffer from poor ionic conductivity at room temperature (requiring heating to 60°C to cross into its amorphous, conductive phase) and a narrow electrochemical stability window (~3.9 V), PEC addresses several of these fundamental limitations.
PEC's backbone contains alternating ethylene and carbonate groups. This chemical structure alters how it interacts with metal ions Li+, Na}+) compared to polyethers: (1) Amorphous Nature: Unlike highly crystalline PEO, PEC is inherently amorphous at room temperature. This eliminates the need to operate the battery at elevated temperatures to facilitate ion transport. (2) High Dielectric Constant: The polar carbonate groups (C=O) give PEC a high dielectric constant. This enables excellent dissociation of lithium salts (like LiTFSI) or sodium salts (like NaTFSI), generating a higher concentration of free mobile charge carriers. (3) High Oxidation Stability: The electron-withdrawing nature of the carbonyl group lowers the highest occupied molecular orbital (HOMO) energy level. This gives PEC an expanded electrochemical stability window, typically stable up to 4.5 V to 4.8 V vs. Li/Li+, making it compatible with high-voltage cathodes like NCM811 or ultra-high nickel variants.
| Part Number |
CBSSEPEC (C-BSSE-PEC) |
| CAS |
25718-55-2 |
| Chemical Formula |
(C3H4O3)n  |
| Appearance |
White Granulate |
| Density |
1.42 g/cm3 |
| Refractive Index |
1.47 |
| Decomposition Temperature |
220℃ |
| Glass Transition Temperature |
0-10 |
| Package Size | 50 g/bottle |
Notes: Please try to store the PEC Granulate in a dry place (glovebox is preferred).
References:
- K. Kimura, et al. A highly-concentrated poly(ethylene carbonate)-based electrolyte for all-solid-state Li battery working at room temperature, Electrochemistry Communications, 2016, 66, 46-48.
- Z. He, et al. Flexible poly(ethylene carbonate)/garnet composite solid electrolyte reinforced by poly(vinylidene fluoride-hexafluoropropylene) for lithium metal batteries, Journal of Power Sources, 2018, 392, 232-238
