Electrolytes for lithium sulfur cells
First Claim
Patent Images
1. An electrochemical cell comprising:
- (a) a cathode comprising an electroactive sulfur-containing material;
(b) an anode comprising lithium; and
(c) a nonaqueous electrolyte, wherein the electrolyte comprises;
(i) one or more nonaqueous solvents selected from the group consisting of acyclic ethers, cyclic ethers, polyethers, and sulfones;
(ii) one or more lithium salts; and
(iii) one or more N—
O additives comprising an organic nitrite compound and the organic nitrite compounds are selected from one or more of the group consisting of ethyl nitrite, propyl nitrite, butyl nitrite, pentyl nitrite and octyl nitrite.
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Abstract
Disclosed is an additive for an electrochemical cell wherein the additive includes an N—O bond. The additive is most preferably included in a nonaqueous electrolyte of the cell. Also disclosed are cells and batteries including the additive, and methods of charging the batteries and cells. An electrochemical cell including the additive preferably has an anode that includes lithium and a cathode including an electroactive sulfur-containing material.
89 Citations
15 Claims
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1. An electrochemical cell comprising:
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(a) a cathode comprising an electroactive sulfur-containing material; (b) an anode comprising lithium; and (c) a nonaqueous electrolyte, wherein the electrolyte comprises; (i) one or more nonaqueous solvents selected from the group consisting of acyclic ethers, cyclic ethers, polyethers, and sulfones; (ii) one or more lithium salts; and (iii) one or more N—
O additives comprising an organic nitrite compound and the organic nitrite compounds are selected from one or more of the group consisting of ethyl nitrite, propyl nitrite, butyl nitrite, pentyl nitrite and octyl nitrite. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electrochemical cell comprising:
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(a) a cathode comprising an electroactive sulfur-containing material; (b) an anode comprising lithium; and (c) a nonaqueous electrolyte, wherein the electrolyte comprises; (i) one or more nonaqueous solvents selected from the group consisting of acyclic ethers, cyclic ethers, polyethers, and sulfones; and (ii) one or more N—
O additives comprising an organic nitrite compound and the organic nitrite compounds are selected from one or more of the group consisting of ethyl nitrite, propyl nitrite, butyl nitrite, pentyl nitrite and octyl nitrite. - View Dependent Claims (15)
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Specification