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Method of forming button-type battery lithium electrodes

  • US 5,480,462 A
  • Filed: 07/06/1994
  • Issued: 01/02/1996
  • Est. Priority Date: 03/02/1994
  • Status: Expired due to Term
First Claim
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1. A method of forming a button-type lithium electrode comprising the following steps:

  • providing an electrically conductive sheet having an exposed surface, the electrically conductive sheet being comprised of a material to which elemental lithium will adhere;

    masking the electrically conductive sheet with a material to which elemental lithium will not appreciably adhere, the masking defining a masked portion and an unmasked portion, the unmasked portion of the conductive sheet having a cross-sectional size and shape of the desired electrode being formed;

    applying molten lithium to the masked electrically conductive sheet to cause elemental lithium to adhere to the unmasked portion but not appreciably adhere to the masked portion;

    solidifying the elemental lithium on the unmasked portion to in situ form a lithium electrode on the unmasked portion; and

    after solidifying, removing the masking material from the masked portion of the conductive sheet.

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