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Electrode including nanostructures for rechargeable cells

  • US 10,090,512 B2
  • Filed: 03/22/2012
  • Issued: 10/02/2018
  • Est. Priority Date: 05/07/2009
  • Status: Active Grant
First Claim
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1. A lithium ion battery electrode comprising:

  • a conductive substrate; and

    silicon-containing nanowires substrate-rooted to the conductive substrate, the silicon-containing nanowires having variable cross-sectional dimensions along the length of the silicon-containing nanowires and having tapered profiles with wider ends and narrower ends such that the silicon-containing nanowires taper from the wider ends to the narrower ends,wherein one of the ends of each nanowire is substrate-rooted to the conductive substrate to provide conductive attachment and mechanical support to the silicon-containing nanowires with respect to the conductive substrate and the other of the ends of each nanowire is off the conductive substrate and wherein the silicon-containing nanowires further comprise a silicide.

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