Composite negative electrode materials
Assignee3M Innovative Properties Company
InventorsMark N. Obrovac, Marc Flodquist
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Abstract
Composite particles that include an electrochemically active metal phase, an insulating phase, and a conducting phase are provided that are useful active materials in negative electrodes for lithium-ion electrochemical cells. The electrochemically active phase includes silicon. Lithium-ion electrochemical cells are provided that include the provided composite composite particles as active materials in negative electrodes as well as methods of making the provided composite particles.
Claims24
A composite particle comprising an electrochemically active metal phase, an insulating phase, and a conducting phase,
- wherein the electrochemically active metal phase comprises silicon.
A method of forming composite particles comprising:
- providing precursor materials;
- and
- mechanically milling the precursor materials to form the composite particles, wherein the composite particles include an electrochemically active metal phase, an insulating phase and a conducting phase.
Dependencies are inferred from the claim text.