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US 2019/0198838 A1Published application
Catholytes for solid state rechargeable batteries, battery architectures suitable for use with these catholytes, and methods of making and using the same
AssigneeQuantumScape Corporation
InventorsGreg ROBERTS, Zhebo CHEN, Will HUDSON, Rainer FASCHING, Tiffany HO, Tim HOLME, Mohit SINGH, Aram YANG
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Abstract
Provided herein are electrochemical cells having a solid separator, a lithium metal anode, and a positive electrode catholyte wherein the electrochemical cell includes a nitrile, dinitrile, or organic sulfur-including solvent and a lithium salt dissolved therein. Also set forth are methods of making and using these electrochemical cells.
Claims24
-194. (canceled)
An electrochemical cell, comprising
- a lithium metal negative electrode;
- a solid separator;
- and
- a positive electrode,
- wherein the positive electrode comprises:
- an active material;
- and
- a catholyte,
- wherein the catholyte comprises:
- a catholyte solvent;
- and
- a lithium salt;
- and
- wherein the catholyte solvent comprises a nitrile solvent, a dinitrile solvent, an organic sulfur-including solvent, or combinations thereof.
11 more elements
A catholyte comprising,
- a nitrile solvent;
- and
- a lithium salt;
- wherein the nitrile solvent is selected from the group consisting of from acetonitrile, butyronitrile, benzonitrile, glutaronitrile, hexanenitrile, fluoroacetonitrile, malononitrile, nitroacetonitrile, ethoxyacetonitrile, pentanenitrile, propanenitrile, succinonitrile, adiponitrile, iso-butyronitrile, and combinations thereof;
- wherein the lithium salt is selected from LiPF6, LiBOB, LiTFSi, LiBF4, LiClO4, LiFSI, LiAsF6, LiI, and a combination thereof;
- and wherein the catholyte is chemically stable when in contact with a solid separator.
3 more elements
A catholyte comprising,
- an organic sulfur-including solvent;
- and
- a lithium salt;
- wherein the organic sulfur-including solvent is selected from ethyl methyl sulfone, dimethyl sulfone, sulfolane, allyl methyl sulfone, butadiene sulfone, butyl sulfone, methyl methanesulfonate, dimethyl sulfite, and combinations thereof;
- wherein the lithium salt is selected from LiPF6, LiBOB, LiTFSi, LiBF4, LiClO4, LiFSI, LiAsF6, LiClO4, LiI, and a combination thereof;
- and wherein the catholyte is chemically stable when in contact with a solid separator.
3 more elements
Dependencies are inferred from the claim text.