Method for producing core shell nanoparticles
AssigneeHonda Motor Co., Ltd.
InventorNam Hawn Chou
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Abstract
An electrode material which may be used in an electrochemical cell used to convert carbon dioxide into useful products, such as synthetic fuel. The electrode material may comprise nano-sized core-shell catalyst (i.e., core-shell nanoparticles, or CSNs) having a catalytic core component encompassed by one or more outer shells, wherein at least one of the outer shells has a mesoporous structure. Electrochemical cells, electrochemical cell electrodes, and methods of making CSNs are also provided.
Claims30
A method of making core-shell nanoparticles comprising:
- providing a catalytic core component comprising a catalytic material;
- coating the catalytic core component with a temporary shell component;
- heating the catalytic core component coated with the temporary shell component to convert the temporary shell component into a mesoporous structure;
- depositing a shell material onto the mesoporous structure;
- removing the mesoporous structure to provide a core-shell nanoparticle having a catalytic core encompassed by a mesoporous shell comprising the shell material,
- wherein the temporary shell component comprises SiO2.
A method of making core-shell nanoparticles comprising:
- providing a catalytic core component comprising a catalytic material;
- coating the catalytic core component with a temporary shell component;
- heating the catalytic core component coated with the temporary shell component to a temperature of between 300° C. and 350° C. in order to convert the temporary shell component into a mesoporous structure;
- depositing a shell material onto the mesoporous structure;
- and
- removing the mesoporous structure to provide a core-shell nanoparticle having a catalytic core encompassed by a mesoporous shell comprising the shell material.
A method of making core-shell nanoparticles comprising:
- providing a catalytic core component comprising a catalytic material;
- coating the catalytic core component with a temporary shell component;
- heating the catalytic core component coated with the temporary shell component to convert the temporary shell component into a mesoporous structure;
- depositing a shell material onto the mesoporous structure, wherein the shell material comprises a fluoride, an oxyfluoride, an oxide, and/or a hydroxide;
- and
- removing the mesoporous structure to provide a core-shell nanoparticle having a catalytic core encompassed by a mesoporous shell comprising the shell material.
Dependencies are inferred from the claim text.