Patents by Inventor Joshua D. Snyder

Joshua D. Snyder has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Methods of producing porous platinum-based catalysts for oxygen reduction
    Patent number: 9997788
    Abstract: A porous metal that comprises platinum and has a specific surface area that is greater than 5 m2/g and less than 75 m2/g. A fuel cell includes a first electrode, a second electrode spaced apart from the first electrode, and an electrolyte arranged between the first and the second electrodes. At least one of the first and second electrodes is coated with a porous metal catalyst for oxygen reduction, and the porous metal catalyst comprises platinum and has a specific surface area that is greater than 5 m2/g and less than 75 m2/g. A method of producing a porous metal according to an embodiment of the current invention includes producing an alloy consisting essentially of platinum and nickel according to the formula PtxNi1-x, where x is at least 0.01 and less than 0.3; and dealloying the alloy in a substantially pH neutral solution to reduce an amount of nickel in the alloy to produce the porous metal.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: June 12, 2018
    Assignee: The Johns Hopkins University
    Inventors: Jonah D. Erlebacher, Joshua D. Snyder
  • METHODS OF PRODUCING POROUS PLATINUM-BASED CATALYSTS FOR OXYGEN REDUCTION
    Publication number: 20150065341
    Abstract: A porous metal that comprises platinum and has a specific surface area that is greater than 5 m2/g and less than 75 m2/g. A fuel cell includes a first electrode, a second electrode spaced apart from the first electrode, and an electrolyte arranged between the first and the second electrodes. At least one of the first and second electrodes is coated with a porous metal catalyst for oxygen reduction, and the porous metal catalyst comprises platinum and has a specific surface area that is greater than 5 m2/g and less than 75 m2/g. A method of producing a porous metal according to an embodiment of the current invention includes producing an alloy consisting essentially of platinum and nickel according to the formula PtxNi1?x, where x is at least 0.01 and less than 0.3; and dealloying the alloy in a substantially pH neutral solution to reduce an amount of nickel in the alloy to produce the porous metal.
    Type: Application
    Filed: October 24, 2014
    Publication date: March 5, 2015
    Inventors: Jonah D. Erlebacher, Joshua D. Snyder
  • Porous platinum-based catalysts for oxygen reduction
    Patent number: 8895206
    Abstract: A porous metal that comprises platinum and has a specific surface area that is greater than 5 m2/g and less than 75 m2/g. A fuel cell includes a first electrode, a second electrode spaced apart from the first electrode, and an electrolyte arranged between the first and the second electrodes. At least one of the first and second electrodes is coated with a porous metal catalyst for oxygen reduction, and the porous metal catalyst comprises platinum and has a specific surface area that is greater than 5 m2/g and less than 75 m2/g. A method of producing a porous metal according to an embodiment of the current invention includes producing an alloy consisting essentially of platinum and nickel according to the formula PtxNi1-x, where x is at least 0.01 and less than 0.3; and dealloying the alloy in a substantially pH neutral solution to reduce an amount of nickel in the alloy to produce the porous metal.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: November 25, 2014
    Assignee: The Johns Hopkins University
    Inventors: Jonah D. Erlebacher, Joshua D. Snyder
  • Encapsulated Nanoporous Metal Nanoparticle Catalysts
    Publication number: 20140113218
    Abstract: Catalysts comprising porous metal nanoparticles, which are individually encapsulated with a reaction-enhancing material, and their use in fuel cell catalysis are provided.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Applicant: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Jonah Daedalus Erlebacher, Joshua D. Snyder
  • POROUS METAL CATALYSTS FOR OXYGEN REDUCTION
    Publication number: 20110177432
    Abstract: A porous metal that comprises platinum and has a specific surface area that is greater than 5 m2/g and less than 75 m2/g. A fuel cell includes a first electrode, a second electrode spaced apart from the first electrode, and an electrolyte arranged between the first and the second electrodes. At least one of the first and second electrodes is coated with a porous metal catalyst for oxygen reduction, and the porous metal catalyst comprises platinum and has a specific surface area that is greater than 5 m2/g and less than 75 m2/g. A method of producing a porous metal according to an embodiment of the current invention includes producing an alloy consisting essentially of platinum and nickel according to the formula PtxNi1-x, where x is at least 0.01 and less than 0.3; and dealloying the alloy in a substantially pH neutral solution to reduce an amount of nickel in the alloy to produce the porous metal.
    Type: Application
    Filed: October 5, 2009
    Publication date: July 21, 2011
    Applicant: The Johns Hopkins University
    Inventors: Jonah D. Erlebacher, Joshua D. Snyder