Methods of charging lithium sulfur cells
First Claim
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1. A method for terminating charging of a lithium-sulfur electrochemical cell wherein the method comprises:
- (A) monitoring the cell voltage during charging;
(B) calculating the rate of change of voltage with specific charging capacity (dV/dQ); and
(C) terminating charging when dV/dQ is equal to or greater than 5 Vg/Ah; and
wherein the cell comprises;
(a) a cathode;
(b) an anode; and
(c) an electrolyte comprising;
(i) one or more solvents; and
(iii) one or more N-O additives.
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Abstract
Disclosed is a method of charging a lithium-sulfur electrochemical cell wherein the lithium-sulfur cell comprises a cathode comprising an electroactive sulfur-containing material, an anode comprising lithium, and a nonaqueous electrolyte. Also disclosed are methods for determining charge termination when charging lithium-sulfur cells.
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20 Claims
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1. A method for terminating charging of a lithium-sulfur electrochemical cell wherein the method comprises:
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(A) monitoring the cell voltage during charging; (B) calculating the rate of change of voltage with specific charging capacity (dV/dQ); and
(C) terminating charging when dV/dQ is equal to or greater than 5 Vg/Ah; and
wherein the cell comprises;
(a) a cathode;
(b) an anode; and
(c) an electrolyte comprising;
(i) one or more solvents; and
(iii) one or more N-O additives. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification