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US 11,588,144 B2Granted
Battery cathodes for improved stability
AssigneeThe Florida International University Board of Trustees
InventorsBilal El-Zahab, Amir Chamaani, Neha Chawla, Meer Safa
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Abstract
A lithium battery and method for fabricating the same are provided herein. The battery cathode comprises a carbon structure filled with a catalyst, such as palladium-catalyst-filled carbon nanotubes (CNTs). The carbon structure provides a barrier between the catalyst and the electrolyte providing an increased stability of the electrolyte during both discharging and charging of a battery.
Claims19
A lithium sulfur battery, comprising:
- an anode;
- a cathode
- an electrolyte disposed between the anode and the cathode;
- and
- a separator disposed between the anode and the cathode,
- the cathode comprising:
- a conductive layer coated with a sulfur source;
- and
- a carbon structure having a catalyst filled therein without a surface coating of the catalyst on the carbon structure,
- the catalyst having nanoparticles of a platinum group metal, and
- the carbon structure being coated on the conductive layer.
8 more elements
A lithium battery, comprising:
- an anode;
- a cathode;
- and
- a separator including an electrolyte and disposed between the anode and the cathode,
- the cathode comprising a carbon cloth gas diffusion layer, a multi-walled carbon nanotube coated on the carbon cloth gas diffusion layer, and a catalyst filled in an annular cavity of the multi-walled carbon nanotube without a surface coating of the catalyst on the multi-walled carbon nanotube,
- the catalyst comprising nanoparticles of a platinum group metal,
- the lithium battery being a lithium sulfur battery, and
- the cathode further comprising a sulfur source.
5 more elements
A lithium battery, comprising:
- an anode;
- a cathode;
- and
- a separator including an electrolyte and disposed between the anode and the cathode,
- the cathode comprising a carbon cloth gas diffusion layer, a multi-walled carbon nanotube coated on the carbon cloth gas diffusion layer, and a catalyst filled in an annular cavity of the multi-walled carbon nanotube without a surface coating of the catalyst on the multi-walled carbon nanotube,
- the catalyst comprising nanoparticles of a platinum group metal, and
- the catalyst being a palladium nanoparticle catalyst.
4 more elements
A lithium sulfur battery, comprising:
- an anode;
- a cathode;
- a separator including an electrolyte and disposed between the anode and the cathode;
- a first conductive current collector disposed on the cathode, the first conductive current collector being porous;
- and
- a second conductive current collector disposed on the anode,
- the cathode comprising a carbon cloth gas diffusion layer, a multi-walled carbon nanotube coated on the carbon cloth gas diffusion layer, a sulfur source, and a catalyst filled in an annular cavity of the multi-walled carbon nanotube without a surface coating of the catalyst on the multi-walled carbon nanotube,
- the catalyst comprising nanoparticles of a platinum group metal,
- the platinum group metal including at least one of ruthenium, rhodium, palladium, osmium, iridium, and platinum,
- the separator being a polypropylene separator,
- the electrolyte being soaked in the separator,
- the electrolyte including a lithium salt,
- the first conductive current collector being a stainless steel tube, and the second conductive current collector being a stainless steel rod.
10 more elements
Dependencies are inferred from the claim text.