Electrode including silicon-comprising fibres and electrochemical cells including the same
First Claim
1. An electrode comprising silicon-comprising fibres, wherein the silicon-comprising fibres are arranged to cross over each other to provide multiple intersection points, and characterized in that two or more of the fibres are bonded to each other at intersection points to form a bonded felt before any lithiation or delithiation of the silicon comprising fibres, and wherein the two or more fibres are made of the same material and have substantially the same dimensions.
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Accused Products
Abstract
A pre-charged material including silicon-comprising fibers characterized in that two or more of the fibers are bonded together to create both a bonded felt anode structure, with or without a current collector, and a composite anode structure with a current collector and an electrode structure. The structure overcomes problems associated with charge/discharge capacity loss.
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Citations
33 Claims
- 1. An electrode comprising silicon-comprising fibres, wherein the silicon-comprising fibres are arranged to cross over each other to provide multiple intersection points, and characterized in that two or more of the fibres are bonded to each other at intersection points to form a bonded felt before any lithiation or delithiation of the silicon comprising fibres, and wherein the two or more fibres are made of the same material and have substantially the same dimensions.
- 13. A lithium rechargeable cell anode comprising a layer of silicon-comprising fibres, wherein the silicon comprising fibres are arranged to cross over each other to provide multiple intersection points and characterized in that two or more of the fibres are bonded to each other at intersection points to form a bonded felt before any lithiation or delithiation of the silicon-comprising fibres, and wherein the fibres are single crystal fibres.
- 20. An electrode for a lithium ion battery comprising an electrochemically active material comprising a layer of silicon-comprising fibres, wherein the silicon-comprising fibres are arranged to cross over each other to provide multiple intersection points, and characterized in that at least two of the silicon-comprising fibres are bonded to each other at intersection points to form a bonded felt before any lithiation or delithiation of the electrochemically active material.
Specification