Nanostructured materials for battery applications
AssigneeOneD Material, Inc.
InventorsYimin ZHU, Jay L. GOLDMAN, Jason HARTLOVE, Hans Jurgen HOFLER
Life of this patent
Estimating the term…
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.
Claims30
1-250. (canceled)
A battery slurry, comprising:
- a mixture of graphite, a polymer binder, and an additive;
- wherein the additive comprises a carbon-based substrate in the form of particles having a diameter of about 5 microns to about 50 microns, the particles comprising carbon black, and wherein Si-based nanowires having a core-shell structure and having a diameter of about 20 nm to about 100 nm and a length of about 0.1 microns to about 50 microns are grown directly on and attached to surfaces of the carbon-based substrate, and
- wherein the weight % ratio of the additive in the battery slurry is between 1% and 80%.
A battery anode electrode, comprising:
- a current collector;
- and
- a coating layer formed on the current collector, the coating layer comprising a slurry comprising a mixture of graphite, a polymer binder, and an additive;
- wherein the additive comprises a carbon-based substrate in the form of particles having diameter of about 5 microns to 50 microns, the particles comprising carbon black, and wherein Si-based nanowires having a core-shell structure and having a diameter of about 20 nm to about 100 nm and a length of about 0.1 microns to 50 microns are grown directly on and attached to surfaces of the carbon-based substrate, and
- wherein the weight % ratio of the additive in the battery slurry is between 1% and 80%.
A method of preparing a slurry for a battery anode electrode comprising:
- (a) providing an additive comprising a carbon-based substrate in the form of particles having a diameter of about 5 microns to about 50 microns, the particles comprising carbon black, wherein a plurality of Si-based nanowires having a core-shell structure and a diameter of about 20 nm to about 100 nm and a length of about 0.1 microns to about 50 microns are grown directly on and attached to surfaces of the carbon-based substrate;
- and
- (b) mixing the additive with graphite and a polymer binder to form a slurry, the weight % ratio of the additive in the slurry being between 1% and 80%.
A method of making a battery anode electrode comprising:
- (a) providing an additive comprising a carbon-based substrate in the form of particles having a diameter of about 5 microns to about 50 microns comprising carbon black, wherein a plurality of Si-based nanowires having a core-shell structure and a diameter of about 20 nm to about 100 nm and a length of about 0.1 microns to about 50 microns are grown directly on and attached to surfaces of the carbon-based substrate;
- (b) mixing the additive with graphite and a polymer binder to form a slurry, wherein the weight % ratio of the additive in the slurry is between 1% and 80%;
- and
- (c) forming the slurry into the battery anode electrode.
Dependencies are inferred from the claim text.