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US 11,145,857 B2Granted
High capacity polymer cathode and high energy density rechargeable cell comprising the cathode
AssigneeIonic Materials, Inc.
InventorsMichael A. Zimmerman, Randy Leising, Alexei B. Gavrilov, Keith Smith, Andy Teoli
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Abstract
The invention features a rechargeable cathode and a battery comprising the cathode. The cathode includes a solid, ionically conducting polymer material and electroactive sulfur. The battery contains a lithium anode; the cathode; and an electrolyte; wherein at least one of anode, the cathode and the electrolyte, include the solid, ionically conducting polymer material.
Claims27
A cathode electrode comprising:
- an active material including sulfur;
- and
- a solid, ionically conductive polymer;
- wherein the solid, ionically conductive polymer consisting of a reactant product of a base polymer, an electron acceptor, and a compound including a source of ions has an ionic conductivity of at least 1×10−4 S/cm at a room temperature;
- and
- wherein the ionic conductivity of the solid, ionically conductive polymer does not increase more than one half one order of magnitude when a temperature of the solid, ionically conductive polymer is increased from the room temperature up to a temperature of 97° C.
3 more elements
An electrochemical cell comprising:
- an anode;
- and
- a cathode;
- wherein said cathode comprises sulfur as an active material and a solid, ionically conductive polymer;
- wherein the solid, ionically conductive polymer consisting of a reactant product of a base polymer, an electron acceptor, and a compound including a source of ions has an ionic conductivity of at least 1×10−4 S/cm at a room temperature;
- and
- wherein the ionic conductivity of the solid, ionically conductive polymer does not increase more than one half one order of magnitude when a temperature of the solid, ionically conductive polymer is increased from the room temperature up to a temperature of 97° C.
4 more elements
Dependencies are inferred from the claim text.