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US 2015/0311532 A1Published application
Batteries and cathodes containing carbon nanotubes
AssigneeMedtronic, Inc.
InventorsKaimin Chen, Gaurav Jain
Life of this patent
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Abstract
Cathodes containing active materials and carbon nanotubes are described. The use of carbon nanotubes in cathode materials can provide a battery having increased longevity and volumetric capacity over batteries that contain a cathode that uses conventional conductive additives such as carbon black or graphite.
Claims20
A battery comprising:
- a lithium metal anode;
- an electrolyte;
- and
- a cathode comprising a cathode composition of silver vanadium oxide, CFx, and conductive additive comprising carbon nanotubes, the silver vanadium oxide and CFx combined being present the composition in an amount of at least 80% by weight of the composition.
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A cathode comprising:
- an active material selected from the group consisting of silver vanadium oxide (SVO), manganese dioxide (MnO2), vanadium pentoxide (V2O5), copper silver vanadium oxide (CuxAg2-xV4O11)), and copper fluoride (CuF2) and mixtures of any of them;
- carbon monofluoride (CFx);
- and
- conductive additive comprising carbon nanotubes, wherein the active material and the carbon monofluoride combined is present in an amount of at least 80% by weight.
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A cathode consisting essentially of:
- an active material selected from the group consisting of silver vanadium oxide (SVO), manganese dioxide (MnO2), vanadium pentoxide (V2O5), copper silver vanadium oxide (CuxAg2-xV4O11)), and copper fluoride (CuF2) and mixtures of any of them;
- carbon monofluoride (CFx);
- and
- conductive additive consisting essentially of carbon nanotubes and carbon black or graphite or both, wherein the active material and the carbon monofluoride combined is present in an amount of at least 80% by weight.
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Dependencies are inferred from the claim text.