Patents by Inventor Vojislav Stamenkovic

Vojislav Stamenkovic 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).

  • HIGHLY DURABLE NANOSCALE ELECTROCATALYST BASED ON CORE SHELL PARTICLES
    Publication number: 20110245068
    Abstract: A multimetallic nanoscale catalyst having a sore portion enveloped by a shell portion and exhibiting high catalytic activity and improved catalytic durability. In various embodiments, the core/shell nanoparticles comprise a gold particle coated with a catalytically active platinum bimetallic material. The shape of the nanoparticles is substantially defined by the particle shape of the core portion. The nanoparticles may be dispersed on a high surface area substrate for use as a catalyst and is characterized by no significant loss in surface area and specific activity following extended potential cycling.
    Type: Application
    Filed: April 5, 2010
    Publication date: October 6, 2011
    Inventors: Vojislav Stamenkovic, Nenad M. Markovic, Chao Wang, Hideo Daimon, Shouheng Sun
  • Nanosegregated Surfaces As Catalysts for Fuel Cells
    Publication number: 20110077147
    Abstract: A method of preparing a nanosegregated Pt alloy having enhanced catalytic properties. The method includes providing a sample of Pt and one or more of a transition metal in a substantially inert environment, and annealing the sample in such an environment for a period of time and at a temperature profile to form a nanosegregated Pt alloy having a Pt-skin on a surface. The resulting alloy is characterized by a plurality of compositionally oscillatory atomic layers resulting in an advantageous electronic structure with enhanced catalytic properties.
    Type: Application
    Filed: December 7, 2010
    Publication date: March 31, 2011
    Inventors: Vojislav Stamenkovic, Nenad M. Markovic
  • Nanosegregated surfaces as catalysts for fuel cells
    Patent number: 7871738
    Abstract: A method of preparing a nanosegregated Pt alloy having enhanced catalytic properties. The method includes providing a sample of Pt and one or more of a transition metal in a substantially inert environment, and annealing the sample in such an environment for a period of time and at a temperature profile to form a nanosegregated Pt alloy having a Pt-skin on a surface. The resulting alloy is characterized by a plurality of compositionally oscillatory atomic layers resulting in an advantageous electronic structure with enhanced catalytic properties.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: January 18, 2011
    Assignee: UChicago Argonne, LLC
    Inventors: Vojislav Stamenkovic, Nenad M. Markovic
  • NANOSEGREGATED SURFACES AS CATALYSTS FOR FUEL CELLS
    Publication number: 20090247400
    Abstract: A method of preparing a nanosegregated Pt alloy having enhanced catalytic properties. The method includes providing a sample of Pt and one or more of a transition metal in a substantially inert environment, and annealing the sample in such an environment for a period of time and at a temperature profile to form a nanosegregated Pt alloy having a Pt-skin on a surface. The resulting alloy is characterized by a plurality of compositionally oscillatory atomic layers resulting in an advantageous electronic structure with enhanced catalytic properties.
    Type: Application
    Filed: December 18, 2008
    Publication date: October 1, 2009
    Inventors: Vojislav Stamenkovic, Nenad M. Markovic