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US 12,637,776 B2Granted
Electrochemical synthesis method for lithium superoxide
AssigneeUchicago Argonne, LLC
InventorsLarry A. Curtiss, Hsien-Hau Wang, Khalil Amine, Samuel Plunkett
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Abstract
The present invention provides, in part, methods and processes for the production of lithium superoxide (LiO2) which is free of other lithium-oxygen compounds, as well as compositions and electrochemical cells comprising lithium superoxide (e.g., lithium superoxide that is free of other lithium-oxygen compounds).
Claims12
A process of forming LiO2, the process comprising:
- subjecting Ir0 and Li0 to elevated temperature under an inert atmosphere to form Ir3Li, and mixing the Ir3Li with reduced graphene oxide (rGO) to form a mixture;
- providing an electrochemical cell comprising a porous oxygen cathode comprising a gas-diffusion layer coated with the mixture, a lithium anode, a current collector, and an electrolyte;
- and
- discharging the electrochemical cell to form a discharge product;
- wherein:
- the discharge product comprises LiO2;
- and
- the discharge product is substantially free of Li2O and Li2O2.
5 more elements
Dependencies are inferred from the claim text.