Prussian blue derived catalysts
AssigneeUchicago Argonne, LLC
InventorsDi-Jia Liu, Hao Wang
Life of this patent
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Abstract
Prussian blue analog derived catalysts having a composition of highly porous transition metal (“TM”) oxides with nano particle size. Such OER catalysts are synthesized from the PBA, containing cobalt, iron, nickel, copper, manganese, zinc, magnesium etc., as secondary building units (“SBUs”) coordinated by hexacyano-based ligands. Furthermore, the PBA-derived catalysts may also integrated into a highly graphitized carbon network to further improve the conductivity, mass transport and durability against oxidative corrosion.
Claims19
A method of making a catalyst material comprising:
- preparing Prussian blue analogue having at least one metal selected from the group consisting of cobalt, iron, manganese, nickel, copper, and zinc;
- mechanically processing the Prussian blue analogue with graphitized carbon in an organic solvent;
- forming a Prussian blue analogue and graphitized carbon material;
- applying a thermolysis treatment to the Prussian blue analogue and graphitized carbon material;
- and
- forming a Prussian blue analogue-derived metal oxide catalyst material.
A method of making a catalyst material comprising:
- mechanically processing Prussian blue analogue comprising at least one metal with graphitized carbon in an organic solvent;
- drying to form a Prussian blue analogue graphitized carbon material;
- forming metal oxide on the Prussian blue analogue graphitized carbon material;
- thermolyzing in an oxidizing environment;
- and
- forming a Prussian blue analogue-derived metal oxide catalyst material having particle sizes of about 20-40 nm;
- wherein the Prussian blue analogue-derived metal oxide catalyst material has a pore size of 2 nm to 50 nm and a BET surface area of 60-150 m2/g.
Dependencies are inferred from the claim text.