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US 11,600,821 B2Granted
Nanostructured materials for battery applications
AssigneeOneD Material, Inc.
InventorsYimin Zhu, Jay L. Goldman, Jason Hartlove, Hans Jurgen Hofler
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Abstract
The present invention relates to nanostructured materials (including nanowires) for use in batteries. Exemplary materials include carbon-comprising, Si-based nanostructures, nanostructured materials disposed on carbon-based substrates, and nanostructures comprising nanoscale scaffolds. The present invention also provides methods of preparing battery electrodes, and batteries, using the nanostructured materials.
Claims18
A battery anode electrode comprising:
- an additive comprising one or more Si-based nanostructures grown directly on the surface of a carbon-based substrate and being attached thereto, said carbon based substrate comprising graphite particles having a diameter of 5 microns to 50 microns, and wherein the Si-based nanostructures have a core-shell structure and comprise Si-based nanowires having a diameter of 20 nm to 100 nm and a length of 0.1 μm to 50 μm;
- a polymer binder;
- and
- a carbon-based material comprising at least one of carbon black, graphite, graphene, graphene powder and graphene foil;
- wherein the additive further comprises a conductive polymer disposed on the nanostructures and wherein the weight % ratio of the additive in the electrode is between 1% and 80%.
2 more elements
A method of making a Lithium-ion battery anode electrode comprising:
- providing an additive comprising one or more Si-based nanostructures grown directly on the surface of a carbon-based substrate and being attached thereto, said carbon based substrate comprising graphite particles having diameter of 5 microns to 50 microns, and wherein the Si-based nanostructures have a core-shell structure and comprise Si-based nanowires having a diameter of 20 nm to 100 nm and a length of 0.1 μm to 50 μm.
- disposing a conductive polymer on the Si-based nanostructures;
- heating the conductive polymer in a presence of an inert gas at a temperature between 160° C. and 1000° C. for a duration of about 30 minutes to about 5 hours;
- mixing the additive with a polymer binder and a carbon-based material comprising at least one of carbon black, graphite, graphene, graphene powder and graphene foil;
- and
- forming the slurry into a battery anode electrode, wherein the weight % ratio of the additive in the slurry is between 1% and 80%.
3 more elements
Dependencies are inferred from the claim text.