Non-aqueous electrochemical cell and electrolyte
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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Abstract
Disclosed is an ambient temperature, rechargeable non-aqueous electrochemical cell having an active metal anode of the second kind, a cathode depolarizer, positive electrode current collector and an electrolyte comprising a solvent, a supporting electrolyte salt, and an active metal salt. Also disclosed is an electrolyte for non-aqueous active metal cells.
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Citations
12 Claims
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1. A non-aqueous, rechargeable electrochemical cell comprising:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification