skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Nanosegregated surfaces as catalysts for fuel cells

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.

Inventors:
;
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531669
Patent Number(s):
7871738
Application Number:
12/338,736
Assignee:
UChicago Argonne, LLC (Chicago, IL)
Patent Classifications (CPCs):
G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
DOE Contract Number:  
AC02-06CH11357; W-31-109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 2008-12-18
Country of Publication:
United States
Language:
English

Citation Formats

Stamenkovic, Vojislav, and Markovic, Nenad M. Nanosegregated surfaces as catalysts for fuel cells. United States: N. p., 2011. Web.
Stamenkovic, Vojislav, & Markovic, Nenad M. Nanosegregated surfaces as catalysts for fuel cells. United States.
Stamenkovic, Vojislav, and Markovic, Nenad M. Tue . "Nanosegregated surfaces as catalysts for fuel cells". United States. https://www.osti.gov/servlets/purl/1531669.
@article{osti_1531669,
title = {Nanosegregated surfaces as catalysts for fuel cells},
author = {Stamenkovic, Vojislav and Markovic, Nenad M.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {1}
}

Patent:

Save / Share:

Works referenced in this record:

E LECTRONIC S TRUCTURE AND C ATALYSIS ON M ETAL S URFACES
journal, October 2002


Structural characteristics of a uniquely nanostructured organic thin film
journal, May 1995

  • Debe, M. K.; Drube, A. R.
  • Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures, Vol. 13, Issue 3, Article No. 1236
  • https://doi.org/10.1116/1.588243

Improved Oxygen Reduction Activity on Pt3Ni(111) via Increased Surface Site Availability
journal, January 2007


Bimetallic Surface Chemistry
journal, October 1990


Near-surface alloys for hydrogen fuel cell applications
journal, January 2006


Oxygen reduction on high surface area Pt-based alloy catalysts in comparison to well defined smooth bulk alloy electrodes
journal, August 2002


Oxygen Reduction on Carbon-Supported Pt−Ni and Pt−Co Alloy Catalysts
journal, April 2002


Changing the Activity of Electrocatalysts for Oxygen Reduction by Tuning the Surface Electronic Structure
journal, April 2006


Trends in electrocatalysis on extended and nanoscale Pt-bimetallic alloy surfaces
journal, February 2007


Theoretical surface science and catalysis—calculations and concepts
book, January 2000


A General Approach to the Size- and Shape-Controlled Synthesis of Platinum Nanoparticles and Their Catalytic Reduction of Oxygen
journal, April 2008


Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs
journal, March 2005


Effect of Surface Composition on Electronic Structure, Stability, and Electrocatalytic Properties of Pt-Transition Metal Alloys:  Pt-Skin versus Pt-Skeleton Surfaces
journal, July 2006


Surface Composition Effects in Electrocatalysis:  Kinetics of Oxygen Reduction on Well-Defined Pt 3 Ni and Pt 3 Co Alloy Surfaces
journal, November 2002


    Works referencing / citing this record:

    Fuel cell electrodes
    patent, June 2015


    Nanostructured platinum alloys for use as catalyst materials
    patent, August 2015


    Thermally stable nanoparticles on supports
    patent, November 2012


    Nanostructured platinum alloys for use as catalyst materials
    patent, December 2013


    Catalytic platinum-copper alloy nanoparticles
    patent, November 2013


    Bimetallic alloy electrocatalysts with multilayered platinum-skin surfaces
    patent, January 2016