Energy storage devices including silicon and graphite

  • US 9,431,181 B2
  • Filed: 04/25/2014
  • Issued: 08/30/2016
  • Est. Priority Date: 02/25/2009
  • Status: Active Grant
First Claim
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1. An energy storage system comprising:

  • a first electrode disposed in a first region of electrolyte and including a substrate,an ion absorbing material attached to the substrate the ion adsorbing material including silicon and a over-layer including graphite, wherein the over-layer including graphite covers at least part of silicon, andsupport filaments in contact with the ion absorbing material, the ion absorbing material covering less than 25% of each of the support filaments;

    a separator configured to separate the first region and a second region of electrolyte; and

    a second electrode disposed in the second region of electrolyte, the first and second electrodes and separator configured to operate as an energy storage device.

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