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Method of fabricating structured particles composed of silicon or a silicon-based material and their use in lithium rechargeable batteries

DC
  • US 8,940,437 B2
  • Filed: 07/17/2008
  • Issued: 01/27/2015
  • Est. Priority Date: 07/17/2007
  • Status: Active Grant
First Claim
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1. 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.

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