Method of fabricating structured particles composed of silicon or a silicon-based material and their use in lithium rechargeable batteries
AssigneeNexeon Limited
InventorsMino Green, Feng-Ming Liu
Life of this patent
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Abstract
Pillared particles of silicon or silicon-comprising material and a method of fabricating the same are disclosed. These particles may be used to create both a composite anode structure with a polymer binder, a conductive additive and a metal foil current collector, and an electrode structure. The structure of the particles overcomes the problems of charge/discharge capacity loss.
Claims23
A plurality of discrete particles, wherein each particle comprises silicon, including a silicon-comprising particle core, and a plurality of silicon-comprising pillars extending outwardly therefrom from a first end to a second end, wherein each pillar in the plurality of pillars is attached to the core at the first end of the pillar, and the second end of each pillar is an unattached free end, wherein in each particle, the fraction of the surface area of the particle core occupied by the pillars is in the range of 0.10 to 0.50.
A plurality of discrete particles wherein each particle comprises silicon and includes a particle core and a plurality of silicon-comprising pillars fabricated on the particle core and extending outwardly therefrom from a first end to a second end, wherein each pillar in the plurality of pillars is attached to the core at the first end of the pillar, and the second end of each pillar is an unattached free end, wherein in each particle, the fraction of the surface area of the particle core occupied by the pillars is in the range of 0.10 to 0.50.
A plurality of discrete particles wherein each particle comprises silicon and includes a particle core and a plurality of silicon-comprising pillars extending outwardly therefrom from a first end to a second end, wherein each pillar in the plurality of pillars is attached to the core at the first end of the pillar, and the second end of each pillar is an unattached free end, wherein in each particle, the fraction of the surface area of the particle core occupied by the pillars is in the range of 0.10 to 0.50.
Dependencies are inferred from the claim text.