Global to push GA events into
skip to main content

Title: Porous platinum-based catalysts for oxygen reduction

A porous metal that comprises platinum and has a specific surface area that is greater than 5 m.sup.2/g and less than 75 m.sup.2/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 m.sup.2/g and less than 75 m.sup.2/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 Pt.sub.xNi.sub.1-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.
Issue Date:
OSTI Identifier:
The Johns Hopkins University (Baltimore, MD) CHO
Patent Number(s):
Application Number:
Contract Number:
Research Org:
The Johns Hopkins University, Baltimore, MD (United States)
Sponsoring Org:
Country of Publication:
United States

Works referenced in this record:

Pt-, PtNi- and PtCo-supported catalysts for oxygen reduction in PEM fuel cells
journal, October 2006

Platinum Monolayer Fuel Cell Electrocatalysts
journal, November 2007

Evolution of nanoporosity in dealloying
journal, March 2001
  • Erlebacher, Jonah; Aziz, Michael J.; Karma, Alain
  • Nature, Vol. 410, Issue 6827, p. 450-453
  • DOI: 10.1038/35068529

Developing the self-contained hydrogen reference electrode
journal, October 1997
  • Gong, Silin; Lu, Juntao; Yan, Heqing
  • Journal of Electroanalytical Chemistry, Vol. 436, Issue 1-2, p. 291-293
  • DOI: 10.1016/S0022-0728(97)00345-8

Pd-Pt Bimetallic Nanodendrites with High Activity for Oxygen Reduction
journal, May 2009

A review of anode catalysis in the direct methanol fuel cell
journal, April 2006

Dealloyed Pt−Cu Core−Shell Nanoparticle Electrocatalysts for Use in PEM Fuel Cell Cathodes
journal, February 2008
  • Mani, Prasanna; Srivastava, Ratndeep; Strasser, Peter
  • The Journal of Physical Chemistry C, Vol. 112, Issue 7, p. 2770-2778
  • DOI: 10.1021/jp0776412

Oxygen Reduction on Platinum Low-Index Single-Crystal Surfaces in Sulfuric Acid Solution: Rotating Ring-Pt(hkl) Disk Studies
journal, March 1995
  • Markovic, Nenad M.; Gasteiger, Hubert A.; Ross, Philip N.
  • The Journal of Physical Chemistry, Vol. 99, Issue 11, p. 3411-3415
  • DOI: 10.1021/j100011a001

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

Improved Oxygen Reduction Activity on Pt3Ni(111) via Increased Surface Site Availability
journal, January 2007
  • Stamenkovic, V. R.; Fowler, B.; Mun, B. S.
  • Science, Vol. 315, Issue 5811, p. 493-497
  • DOI: 10.1126/science.1135941

Stabilization of Platinum Oxygen-Reduction Electrocatalysts Using Gold Clusters
journal, January 2007

The influence of surface facetting upon molecular oxygen electroreduction on platinum in aqueous solutions
journal, August 1994
  • Zinola, C. F.; Castro Luna, A. M.; Triaca, W. E.
  • Electrochimica Acta, Vol. 39, Issue 11-12, p. 1627-1632
  • DOI: 10.1016/0013-4686(94)85146-8