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US 2026/0071048 A1Published application
Electrode composite
AssigneeFord Global Technologies, LLC
InventorsHaibo ZHAO, Zijie LU, Wei XU
Life of this patent
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Abstract
A lithium-ion battery component with an electrode includes a current collector and a silicon-based active layer. The active layer includes a polyacrylonitrile lattice structure with continuous carbon domains. Silicon particles are distributed within the vacancies of the polyacrylonitrile lattice, which is configured to confine the silicon particles during the volume expansion and contraction that occurs during charge cycling.
Claims20
A lithium-ion battery component comprising:
- an electrode having a current collector, and a silicon-based active layer adhered thereon including a polyacrylonitrile lattice, with continuous carbon domains and silicon particles distributed within vacancies of the polyacrylonitrile lattice, configured to confine the silicon particles during volume expansion and contraction of the electrode during charge cycling.
A solid-state battery comprising:
- a current collector;
- a separator;
- and
- a pair of electrodes sandwiching the separator, at least one of the electrodes including a silicon-based active layer with silicon particles encapsulated and conductively interconnected by continuous carbon chains of a polyacrylonitrile composite that are configured to maintain conductive contact among the silicon particles during charge cycling of the electrode.
1 more element
A method of forming an electrode active material comprising:
- heating a precursor solution of a nitrile monomer and silicon nanoparticles to form a silicon-polymer gel of silicon nanoparticles distributed within a polymer matrix;
- lyophilizing the silicon-polymer gel to create a porous silicon-polymer structure;
- oxidizing the porous silicon-polymer structure to form an oxidized porous silicon-polymer structure;
- and
- carbonizing the oxidized porous silicon-polymer structure to form the electrode active material.
2 more elements
Dependencies are inferred from the claim text.