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Electrochemical cell, and particularly a cell with electrodeposited fuel

  • US 8,877,391 B2
  • Filed: 02/16/2011
  • Issued: 11/04/2014
  • Est. Priority Date: 02/16/2010
  • Status: Active Grant
First Claim
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1. A method for operating an electrochemical cell, wherein the cell comprises:

  • a first electrode for oxidizing a metal fuel during discharging and reducing reducible ions of the metal fuel during recharging;

    a second electrode spaced apart from the first electrode for at least reducing an oxidizer during discharging;

    a charging electrode for oxidizing oxidizable ions of the oxidizer during recharging;

    an ionically conductive medium communicating the electrodes, the ionically conductive medium comprising the reducible metal fuel ions and an additive comprising poly(ethylene glycol)tetrahydrofurfuryl,wherein the method comprises recharging the electrochemical cell by;

    i. applying an electrical current between the charging electrode and the first electrode with the charging electrode functioning as an anode and the first electrode functioning as a cathode, such that the reducible metal fuel ions are reduced and electrodeposited as the metal fuel in oxidizable form on the first electrode; and

    ii. removing the electrical current to discontinue the charging.

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