| abstract |
Additives for electrochemical cells where the additive contains N—O bonds. This additive is most preferably included in the non-aqueous electrolyte of the cell. Also disclosed are cells and batteries containing the additive, and methods for charging the batteries and cells. The electrochemical cell containing the additive preferably has an anode containing lithium and a cathode containing an electroactive sulfur-containing material. In one embodiment, an electrochemical cell comprising: (a) a cathode comprising an electroactive sulfur material; (b) an anode comprising lithium; and (c) a non-aqueous electrolyte, the electrolyte comprising: (I) one or more non-aqueous 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 There is provided an electrochemical cell comprising a non-aqueous electrolyte comprising a -O additive. |