Polyacrylonitrile gels for energy storage
AssigneesQuantumScape Corporation, Kyoto University
InventorsMohit SINGH, Will HUDSON, Shigeru YAMAGO
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Abstract
Provided herein are rechargeable battery (e.g., Li-ion and Li-metal anode) catholytes and electrolyte separators that include a chemically cross-linked polymer and a solvent selected from the group consisting of a nitrile, a dinitrile, or a combination thereof; processes for making and using the same; and rechargeable batteries and electrochemical cells that include high voltage stable catholytes and/or electrolyte separators.
Claims119
A composition comprising a chemically-cross linked polymer comprising at least one cyano (—CN) functional group and a solvent selected from the group consisting of a nitrile, a dinitrile, or a combination thereof.
The composition of any one of claims 1-19, wherein the solvent is selected from adiponitrile, acetonitrile, benzonitrile, butanedinitrile, butyronitrile, decanenitrile, ethoxyacetonitrile, fluoroacetonitrile, glutaronitrile, hexanenitrile, heptanenitrile, heptanedinitrile, iso-butyronitrile, malononitrile, methoxyacetonitrile, nitroacetonitrile, nonanenitrile, nonanedinitrile, octanedinitrile, octanenitrile, propanenitrile, pentanenitrile, pentanedinitrile, sebaconitrile, succinonitrile, and combinations thereof.
A process for making a composition, comprising:
- step 1:
- copolymerizing an acrylonitrile (AN) monomer and a second monomer to form a polymer, wherein the second monomer comprises amide functional groups;
- and
- step 2:
- chemically cross-linking the polymer using a bifunctional cross-linker to form a cross-linked polymer.
Dependencies are inferred from the claim text.