Solvents and catalyst preparations for lithium-oxygen batteries
AssigneeUchicago Argonne, LLC
InventorsHsien-Hau Wang, Ritesh Jagatramka, Samuel Plunkett, Larry A. Curtiss, Khalil Amine
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Abstract
An electrochemical device includes a lithium anode having a red poly(benzonitrile) coating covering at least a portion of the anode; a separator and an air cathode comprising reduced graphene oxide over gas diffusion layer; and an electrolyte comprising an ether solvent, benzonitrile, and a lithium salt.
Claims19
A lithium-oxygen battery comprising:
- a lithium anode comprising a red poly(benzonitrile) coating covering at least a portion of the anode;
- an air cathode comprising reduced graphene oxide over gas diffusion layer (GDL);
- and
- an electrolyte comprising an ether solvent, benzonitrile, and a lithium salt.
A method of preparing a lithium-oxygen battery, the method comprising:
- providing a lithium anode, an air cathode comprising reduced graphene oxide, and an electrolyte comprising an ether solvent, benzonitrile, and a lithium salt forming an electrochemical cell;
- and
- cycling the electrochemical cell to form a coating of red poly(benzonitrile) on at least a portion of the lithium anode.
A method of forming an Ir (or Rh) catalyst on an air cathode, the method comprising, heating a reduced graphene oxide impregnated with Ir(COD)(acac) (or Rh(COD)(acac)) in the presence of hydrogen to decompose the Ir(COD)(acac) (or Rh(COD)(acac)) and form Ir (or Rh) particles on the reduced graphene oxide to form the air cathode.
Dependencies are inferred from the claim text.