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Multi-layered coated membrane electrodes for electrochemical cells and cells using same

  • US 5,554,460 A
  • Filed: 07/05/1994
  • Issued: 09/10/1996
  • Est. Priority Date: 07/05/1994
  • Status: Expired due to Fees
First Claim
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1. An electrode for an electrochemical cell, said electrode comprising:

  • an electrochemically inert substrate having a first and a second surface, and fabricated of a porous membrane material selected from the group consisting of polypropylene, polyethylene, polyvinyl alcohol, nylon, and combinations thereof, and having pores formed therein, said pores having a bulk pore size of between 10 nm and 500 nm said substrate further functioning as the separator material for the electrochemical cell into which said electrode is incorporated;

    a first layer of electrochemically active material deposited on said first surface of said substrate, and into the pores formed therein said layer deposited to a thickness of between 3 and 200 nm;

    a current collecting layer deposited atop said first layer of said first electrochemically active material, said current collecting layer deposited to a thickness of between 0.01 and 1.0 μ

    m; and

    a second layer of electrochemically active material, said second layer deposited to a thickness of between 3 and 200 nm.

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