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US 5,162,175 AGranted
Cell for making secondary batteries
OwnerSteven J. Visco, Meilin Liu +1inventors
InventorsSteven J. Visco, Meilin Liu, Lutgard C. DeJonghe
Life of this patent
Estimating the term…
Abstract
The present invention provides all solid-state lithium and sodium batteries operating in the approximate temperature range of ambient to 145.degree. C. (limited by melting points of electrodes/electrolyte), with demonstrated energy and power densities far in excess of state-of-the-art high-temperature battery systems. The preferred battery comprises a solid lithium or sodium electrode, a polymeric electrolyte such as polyethylene oxide doped with lithium triflate (PEO.sub.8 LiCF.sub.3 SO.sub.3), and a solid-state composite positive electrode containing a polymeric organosulfur electrode, (SRS).sub.n, and carbon black, dispersed in a polymeric electrolyte.
Claims20
A solid state metal-sulfur cell which comprises:
- a) a solid metallic anode;
- b) a solid organo-sulfur cathode comprising, in the charged state, a polymer having the formula (R(S).sub.y).sub.n wherein y=2 to 6, n is greater than 20, and R is one or more of the same or different aliphatic or aromatic moieties having 1 to 20 carbon atoms, which may include one or more oxygen, sulfur, or nitrogen heteroatoms when R comprises one or more aromatic rings, or one or more oxygen, sulfur, nitrogen, or fluorine atoms associated 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 and 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 cell, is broken to form an organo-sulfur metal salt with metal ions in said cell;
- and
- c) an electrolyte separator between said anode and said cathode capable of ionic transport between said anode and cathode comprising an organic polymer and an electrolytic salt.
1 more element
A solid metal-sulfur cell which comprises:
- a) a solid lithium anode;
- b) a solid organo-sulfur cathode comprising, in the charged state, a polymer having the formula (R(S).sub.y).sub.n wherein y=2 to 6, n is greater than 20, and R is one or more of the same or different aliphatic or aromatic moieties having 1 to 20 carbon atoms, which may include one or more oxygen, sulfur, or nitrogen heteroatoms when R comprises one or more aromatic rings, or one or more oxygen, sulfur, nitrogen, or fluorine atoms associated 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 and 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 cell, is broken to form an organo-sulfur metal salt with metal ions in said cell;
- and
- c) an electrolyte separator between said anode and said cathode capable of ionic transport between said anode and cathode comprising an organic polymer and an electrolytic salt.
1 more element
A solid state metal-sulfur cell which comprises:
- a) a solid metallic anode;
- b) a solid organo-sulfur cathode comprising, in the charged state, a polymer having the formula (R(S).sub.y).sub.n wherein y=2 to 6, n is greater than 20, and R is one or more of the same or different aliphatic or aromatic moieties having 1 to 20 carbon atoms, which may include one or more oxygen, sulfur, or nitrogen heteroatoms when R comprises one or more aromatic rings, or one or more oxygen, sulfur, nitrogen, or fluorine atoms associated 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 and 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 cell, is broken to form an organo-sulfur metal salt with metal ions in said cell;
- and
- c) an electrolyte separator between said anode and said cathode capable of ionic transport between said anode and cathode comprising an electrolytic salt, and an organic polymer selected from the group consisting of polyethers, polyimines, polythioethers, polyphosphazenes, and mixtures of same.
1 more element
A solid state metal-sulfur cell which comprises:
- a) a solid lithium anode;
- b) a solid organo-sulfur cathode comprising, in the charged state, a polymer having the formula (R(S).sub.y).sub.n wherein y=2 to 6, n is greater than 20, and R is one or more of the same or different aliphatic or aromatic moieties having 1 to 20 carbon atoms, which may include one or more oxygen, sulfur, or nitrogen heteroatoms when R comprises one or more aromatic rings, or one or more oxygen, sulfur, nitrogen, or fluorine atoms associated 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 and 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 cell, is broken to form an organo-sulfur metal salt with metal ions in said cell;
- and
- c) an electrolyte separator between said anode and said cathode, capable of ionic transport between said anode and cathode, comprising one or more polyether polymers and an electrolytic salt.
1 more element
Dependencies are inferred from the claim text.