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Non-aqueous electrochemical cell and electrolyte

  • US 4,520,083 A
  • Filed: 03/02/1983
  • Issued: 05/28/1985
  • Est. Priority Date: 03/02/1983
  • Status: Expired due to Fees
First Claim
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1. A non-aqueous, rechargeable electrochemical cell comprising:

  • (a) an active metal anode;

    (b) a positive electrode current collector;

    and(c) an electrolyte comprising a salt of said active metal, an ionizing solvent comprising sulfur dioxide, and a supporting electrolyte salt comprising at least one component of the general form R+ X-, wherein R+ is a cation different from the cation of said active metal, and X- is an anion which forms a salt with the cation of said active metal which is less soluble in said cell than R+ X- ;

    wherein the saturated concentration of said active metal cation in said electrolyte is between about 10-9 eq/l and about 10-1 eq/l, and said electrolyte is substantially saturated with respect to the active metal cation, whereby an insoluble product is formed at the anode upon discharge of the cell.

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