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AssigneeThe United States of America as represented by the United States Department of Energy
InventorsLutgard C. Dejonghe, Steven J. Visco, Catherine C. Mailhe, Michel B. Armand
Estimating the term…
An novel metal-sulfur type cell operable at a temperature of 200.degree. C. or less with an energy density of 150 Whrs/Kg or better is disclosed characterized by an organo-sulfur cathode formed from an organic-sulfur compound having the general formula, in its charged state, of (R(S).sub.y).sub.n wherein y=1 to 6; n=2 to 20; and R is one or more different aliphatic or aromatic organic moieties having 1 to 20 carbon atoms, which may include one or more oxygen, sulfur, or nitrogen heteroatoms when R comprisises one of more aromatic rings, or one or more oxygen, sulfur, nitrogen, or fluorine atoms associtated with the chain when R comprises an aliphatic chain, wherein the aliphatic group may be linear or branched, saturated or unsaturated, and wherein either the aliphatic chain or the aromatic ring may have substituted groups thereon.
A novel metal-sulfur type cell containing an organo-sulfur material consisting essentially as the positive electrode material wherein said organo-sulfur positive electrode material is further characterized by a sulfur-sulfur bond, when in the charged state, which, upon discharge of the positive electrode, is broken to form an organo-sulfur metal salt with metal ions in said cell.
A novel metal-sulfur type call capable of operating at a temperature of 200.degree. C. or lower and providing an energy density of 150 Whrs/Kg or higher comprising a metal negative electrode and an organo-sulfur positive electrode consisting essentially of a material having the general formula, in its charged state, of (R(S).sub.y).sub.n wherein y=1 to 6;
An novel metal-sulfur type cell capable of operating at a temperature of 150.degree. C. or less and providing an energy density of 200 Whrs/Kg or better comprising:
A novel metal-sulfur type cell capable of operating at a temperature of 200.degree. C. or lower and providing an energy density of 150 Whrs/Kg or higher comprising a metal negative electrode and a positive electrode consisting essentially of a organo-sulfur positive electrode material having the general formula, in its charged state, of R--S--S--R' wherein R and R' consist essentially of the same or different aliphatic or aromatic organic moieties having 1 to 20 carbon atoms, which may include one or more oxygen, sulfur, or nitrogen heteroatoms when R or R' comprises one or more aromatic rings, or one or more oxygen, sulfur, nitrogen, or fluorine atoms associated with the chain when R or R' comprises an aliphatic chain, wherein the aliphatic group may be linear or branched, saturated or unsaturated, and wherein either the aliphatic chain or the aromatic ring may have substituted groups thereon and wherein the sulfur-sulfur bond of said organo-sulfur positive electrode material in the charged state is broken, upon discharge of the cell, to form the organo-sulfur metal salt with metal ions in said cell having the formula R--S--M or R'--S--M wherein M equals metal ions in said cell.
Dependencies are inferred from the claim text.