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US 2024/0194850 A1Published application
Compositions and methods for prelithiating energy storage devices
AssigneeTesla, Inc.
InventorsZiying Wang, Hieu Minh Duong
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Abstract
An energy storage device can include a cathode, an anode, and a separator between the cathode and the anode. At least one of the electrodes can include an electrode film prepared by a dry process. The electrode film and/or the electrode can comprise a prelithiating material. Processes and apparatuses used for fabricating the electrode and/or electrode film are also described.
Claims26
A dry electrode film of an energy storage device, comprising:
- a dry active material;
- a dry binder;
- and
- a dry prelithiating material distributed throughout the dry active material and the dry binder,
- wherein the dry prelithiating material comprises a lithium cation, and
- wherein the dry electrode film is self-supporting and substantially free of solvent residues.
3 more elements
A dry method of fabricating a dry electrode film of an energy storage device, comprising:
- combining a dry prelithiating material, a dry conductive carbon additive, a dry active material and a dry fibrillizable binder to form a dry electrode film mixture;
- and
- fibrillizing the dry fibrillizable binder in the dry electrode film mixture, wherein the dry method is a dry fabrication process substantially free of solvents,
- wherein the dry electrode film is self-supporting, and
- wherein the dry prelithiating material comprises about 0.5-10 wt. % of the dry electrode film.
2 more elements
Dependencies are inferred from the claim text.