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US 11,539,041 B2Granted
Silicon particles for battery electrodes
AssigneeEnevate Corporation
InventorsBenjamin Yong Park, Jill R. Pestana, Xiaohua Liu, Frederic Bonhomme
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Abstract
Silicon particles for use in an electrode in an electrochemical cell are provided. The silicon particles may have outer regions extending about 20 nm deep from the surfaces, the outer regions comprising an amount of aluminum such that a bulk measurement of the aluminum comprises at least about 0.01% by weight of the silicon particles. The bulk measurement of the aluminum may provide the amount of aluminum present at least in the outer regions.
Claims23
An electrode for a battery, the electrode comprising:
- a current collector;
- and
- an active material on the current collector, the active material comprising silicon particles;
- wherein one or more of the silicon particles comprises an inner region and an outer region that extends from a surface of the respective silicon particle to the inner region;
- and
- wherein a concentration of aluminum in the outer region of the respective silicon particle differs from a concentration of aluminum in the inner region of the respective silicon particle.
3 more elements
An electrochemical cell comprising:
- a first electrode;
- a second electrode;
- and
- a separator between the first electrode and the second electrode;
- wherein the first electrode comprises a current collector and an active material on the current collector;
- wherein the active material comprises silicon particles;
- wherein one or more of the silicon particles comprises an inner region and an outer region that extends from a surface of the respective silicon particle to the inner region;
- and
- wherein a concentration of aluminum in the outer region of the respective silicon particle differs from a concentration of aluminum in the inner region of the respective silicon particle.
6 more elements
Dependencies are inferred from the claim text.