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US 2024/0006584 A1Published application
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.
Claims24
An electrode for a battery, the electrode comprising:
- a current collector;
- and
- an active material layer on the current collector, the active material layer comprising a carbon structure and silicon particles;
- wherein the carbon structure holds the silicon particles of the active material layer together;
- and
- wherein, one or more of the silicon particles, each comprises:
- a concentration of aluminum in an outer region of the respective silicon particle that differs from a concentration of aluminum in an inner region of the respective silicon particle;
- and
- a coating layer that coats an outer surface of the respective silicon particle.
6 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 layer on the current collector;
- wherein the active material layer comprises a carbon structure and silicon particles distributed throughout the carbon structure;
- and
- wherein, one or more of the silicon particles, each comprises:
- a concentration of aluminum in an outer region of the respective silicon particle that differs from a concentration of aluminum in an inner region of the respective silicon particle;
- and
- a coating layer that coats an outer surface of the respective silicon particle.
8 more elements
Dependencies are inferred from the claim text.