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US 10,646,921 B2Granted
Excavated nanoframes with three-dimensional electrocatalytic surfaces
AssigneeThe Regents of the University of California
InventorsPeidong Yang, Nigel H. Becknell, Yoonkook Son
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Abstract
Described herein are metallic excavated nanoframes and methods for producing metallic excavated nanoframes. A method may include providing a solution including a plurality of excavated nanoparticles dispersed in a solvent, and exposing the solution to chemical corrosion to convert the plurality of excavated nanoparticles into a plurality of excavated nanoframes.
Claims20
An excavated nanoframe comprising:
- a plurality of branches and a plurality of edges that connect to form a rhombic dodecahedral shape;
- and
- a plurality of sheets within an interior of the excavated nanoframe, the plurality of sheets being adjacent to the plurality of branches and the plurality of edges, the plurality of branches, the plurality of edges, and the plurality of sheets comprising platinum and nickel, the plurality of branches, the plurality of edges, and the plurality of sheets comprising greater than 50 atomic % platinum.
A method comprising:
- providing a plurality of excavated nanoparticles;
- and
- converting the plurality of excavated nanoparticles into a plurality of excavated nanoframes, each excavated nanoframe comprising a plurality of branches and a plurality of edges that connect to form a rhombic dodecahedral shape, and a plurality of sheets within an interior of the excavated nanoframe, the plurality of sheets being adjacent to the plurality of branches and the plurality of edges, the plurality of branches, the plurality of edges, and the plurality of sheets comprising platinum and nickel, the plurality of branches, the plurality of edges, and the plurality of sheets comprising greater than 50 atomic % platinum.
An electrode comprising:
- a solvent-accessible surface;
- and
- a plurality of excavated nanoframes disposed on the solvent-accessible surface, each excavated nanoframe comprising a plurality of branches and a plurality of edges that connect to form a rhombic dodecahedral shape, and a plurality of sheets within an interior of the excavated nanoframe, the plurality of sheets being adjacent to the plurality of branches and the plurality of edges, the plurality of branches, the plurality of edges, and the plurality of sheets comprising platinum and nickel, the plurality of branches, the plurality of edges, and the plurality of sheets comprising greater than 50 atomic % platinum.
Dependencies are inferred from the claim text.