Novel composites for anode electrodes
AssigneeOneD Material, Inc.
InventorsYimin ZHU, Chunsheng DU, Zenan YU
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Abstract
Novel composites for use in battery anode electrodes are described. The novel composites include silicon-based nanostructures attached to a carbon-based substrate having a polymer disposed thereon, the polymer including monomeric units formed from styrene and allyl alcohol. The composites allow for the preparation of anode electrodes having low ratios of inactive materials to active materials, with improved processability according to both wet and dry anode coating techniques. Anode electrodes including the composites have improved uniformity and are more apt at accommodating volume changes during cycling.
Claims79
A composite comprising a plurality of silicon-based nanostructures attached to a carbon-based substrate, the plurality of silicon-based nanostructures and the carbon-based substrate having a polymer disposed thereon, wherein the polymer comprises monomeric units formed from styrene and allyl alcohol.
A process for preparing a composite, the process comprising:
- mixing:
- a plurality of silicon-based nanostructures attached to a carbon-based substrate, and
- a solution of a polymer, the polymer comprising monomeric units formed from styrene and allyl alcohol;
- and
- drying the mixture resulting from the mixing.
An anode electrode comprising a first anodic layer, the first anodic layer comprising a binder and a composite comprising a plurality of silicon-based nanostructures attached to a carbon-based substrate, the plurality of silicon-based nanostructures and the carbon-based substrate having a polymer disposed thereon, wherein the polymer comprises monomeric units formed from styrene and allyl alcohol.
A process for preparing an anode electrode, the process comprising:
- mixing:
- a composite comprising a plurality of silicon-based nanostructures attached to a carbon-based substrate, the plurality of silicon-based nanostructures and the carbon-based substrate having a polymer disposed thereon, wherein the polymer comprises monomeric units formed from styrene and allyl alcohol, and
- a binder to form a mixture;
- applying a layer of the mixture.
A battery comprising:
- a composite comprising a plurality of silicon-based nanostructures attached to a carbon-based substrate, the plurality of silicon-based nanostructures and the carbon-based substrate having a polymer disposed thereon, wherein the polymer comprises monomeric units formed from styrene and allyl alcohol.
A battery comprising:
- an anode electrode comprising a first anodic layer, the first anodic layer comprising a binder and a composite comprising a plurality of silicon-based nanostructures attached to a carbon-based substrate, the plurality of silicon-based nanostructures and the carbon-based substrate having a polymer disposed thereon, wherein the polymer comprises monomeric units formed from styrene and allyl alcohol.
Dependencies are inferred from the claim text.