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US 12,224,441 B2Granted
Nanostructured materials for battery
AssigneeOneD Material, Inc.
InventorsYimin Zhu, Jay L Goldman, Jason Hartlove, Hans Jurgen Hofler
Life of this patent
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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.
Claims21
A battery anode electrode, comprising:
- (1) one or more Si-based nanostructures disposed on graphite powder, wherein the nanostructures have a core-shell structure and comprise any of (i) Si-based nanoparticles having all dimensions less than 50 nm, (ii) Si-based nanowires having a diameter of 20 nm to 100 nm and a length of 0.1 μm to 50 μm, or (iii) a combination thereof, wherein the nanostructures comprise lithium inserted in the nanostructures, wherein the graphite powder is in the form of separate particles having a diameter of 5 microns to 50 microns, and wherein the core of the nanostructures comprises crystalline silicon and the shell of the nanostructures comprises amorphous silicon;
- (2) a carbon-based material;
- and
- (3) a conductive polymer
- wherein the battery anode electrode comprises 5 weight % to 30 weight % of the nanostructures disposed on the graphite powder.
2 more elements
A battery anode electrode, comprising:
- (1) one or more Si-based nanostructures disposed on graphite powder, wherein the nanostructures have a core-shell structure and comprise any of (i) Si-based nanoparticles having all dimensions less than 50 nm, (ii) Si-based nanowires having a diameter of 20 nm to 100 nm and a length of 0.1 μm to 50 μm, or (iii) a combination thereof, wherein the nanostructures comprise lithium inserted in the nanostructures, and wherein the graphite powder is in the form of separate particles having a diameter of 5 microns to 50 microns,
- wherein the core of the nanostructures comprises silicon and the shell of the nanostructures comprises carbon covalently bonded to the core of the nanostructures;
- (2) a carbon-based material;
- and
- (3) a conductive polymer,
- wherein the battery anode electrode comprises 5 weight % to 30 weight % of the nanostructures disposed on the graphite powder.
3 more elements
A method of preparing a battery anode electrode, the method comprising:
- (a) mixing a plurality of Si-based nanostructures disposed on graphite powder with a conductive polymer and a carbon-based material to form a slurry, wherein the nanostructures have a core-shell structure and comprise any of (i) Si-based nanoparticles having all dimensions less than 50 nm, (ii) Si-based nanowires having a diameter of 20 nm to 100 nm and a length of 0.1 μm to 50 μm, or (iii) a combination thereof, wherein the nanostructures comprise lithium inserted in the nanostructures, wherein the graphite powder is in the form of separate particles having a diameter of 5 microns to 50 microns, and wherein the core of the nanostructures comprises crystalline silicon and the shell of the nanostructures comprises amorphous silicon;
- and
- (b) forming the slurry into the battery anode electrode;
- wherein the battery anode electrode comprises 5 weight % to 30 weight % of the nanostructures disposed on the graphite powder.
1 more element
A method of preparing a battery, the method comprising:
- (a) mixing a plurality of Si-based nanostructures disposed on graphite powder with a conductive polymer and a carbon-based material to form a slurry, wherein the nanostructures have a core-shell structure and comprise any of (i) Si-based nanoparticles having all dimensions less than 50 nm, (ii) Si-based nanowires having a diameter of 20 nm to 100 nm and a length of 0.1 μm to 50 μm, or (iii) a combination thereof, wherein the nanostructures comprise lithium inserted in the nanostructures, wherein the graphite powder is in the form of separate particles having a diameter of 5 microns to 50 microns, and wherein the core of the nanostructures comprises crystalline silicon and the shell of the nanostructures comprises amorphous silicon;
- (b) forming the slurry into the battery anode electrode;
- and
- (c) disposing a separator material between the anode electrode and a cathode electrode to form the battery,
- wherein the battery anode electrode comprises 5 weight % to 30 weight % of the nanostructures disposed on the graphite powder.
2 more elements
A method of preparing a battery anode electrode, the method comprising:
- (a) mixing a plurality of Si-based nanostructures disposed on graphite powder with a conductive polymer and a carbon-based material to form a slurry, wherein the nanostructures have a core-shell structure and comprise any of (i) Si-based nanoparticles having all dimensions less than 50 nm, (ii) Si-based nanowires having a diameter of 20 nm to 100 nm and a length of 0.1 μm to 50 μm, or (iii) a combination thereof, wherein the nanostructures comprise lithium inserted in the nanostructures, wherein the graphite powder is in the form of separate particles having a diameter of 5 microns to 50 microns, and wherein the core of the nanostructures comprises silicon and the shell of the nanostructures comprises carbon covalently bonded to the core of the nanostructures;
- and
- (b) forming the slurry into the battery anode electrode;
- wherein the battery anode electrode comprises 5 weight % to 30 weight % of the nanostructures disposed on the graphite powder.
1 more element
A method of preparing a battery, the method comprising:
- (a) mixing a plurality of Si-based nanostructures disposed on graphite powder with a conductive polymer and a carbon-based material to form a slurry, wherein the nanostructures have a core-shell structure and comprise any of (i) Si-based nanoparticles having all dimensions less than 50 nm, (ii) Si-based nanowires having a diameter of 20 nm to 100 nm and a length of 0.1 μm to 50 μm, or (iii) a combination thereof, wherein the nanostructures comprise lithium inserted in the nanostructures, wherein the graphite powder is in the form of separate particles having a diameter of 5 microns to 50 microns, and wherein the core of the nanostructures comprises silicon and the shell of the nanostructures comprises carbon covalently bonded to the core of the nanostructures;
- (b) forming the slurry into the battery anode electrode;
- and
- (c) disposing a separator material between the anode electrode and a cathode electrode to form the battery,
- wherein the battery anode electrode comprises 5 weight % to 30 weight % of the nanostructures disposed on the graphite powder.
2 more elements
Dependencies are inferred from the claim text.