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Interconnected hollow nanostructures containing high capacity active materials for use in rechargeable batteries

  • US 10,461,359 B2
  • Filed: 11/25/2015
  • Issued: 10/29/2019
  • Est. Priority Date: 05/27/2009
  • Status: Active Grant
First Claim
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1. An electrode layer for use in a rechargeable battery, the electrode layer comprising:

  • a plurality of interconnected hollow tubular nanostructures having shells around internal cavities, wherein the shells comprise high capacity electrochemically active material, wherein the high capacity electrochemically active material comprises one or more materials selected from the group consisting of silicon, tin, and germanium, wherein all of the interconnected hollow tubular nanostructures in the electrode layer are interconnected by the high capacity electrochemically active material, andwherein the internal cavities provide free space for the high capacity electrochemically active material to swell into during cycling of the rechargeable battery and wherein the hollow tubular nanostructures are characterized by one or more of the following characteristics;

         1) an aspect ratio of at least about four and a length of at least about 5 micrometers and

         2) a largest inner cross-sectional dimension between about 5 nanometers and 500 nanometers.

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