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Title: Porous platinum-based catalysts for oxygen reduction

Abstract

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.

Inventors:
;
Issue Date:
Research Org.:
The Johns Hopkins University, Baltimore, MD (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1164350
Patent Number(s):
8,895,206
Application Number:
12/920,527
Assignee:
The Johns Hopkins University (Baltimore, MD)
DOE Contract Number:  
FG02-05ER15727
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Erlebacher, Jonah D, and Snyder, Joshua D. Porous platinum-based catalysts for oxygen reduction. United States: N. p., 2014. Web.
Erlebacher, Jonah D, & Snyder, Joshua D. Porous platinum-based catalysts for oxygen reduction. United States.
Erlebacher, Jonah D, and Snyder, Joshua D. Tue . "Porous platinum-based catalysts for oxygen reduction". United States. https://www.osti.gov/servlets/purl/1164350.
@article{osti_1164350,
title = {Porous platinum-based catalysts for oxygen reduction},
author = {Erlebacher, Jonah D and Snyder, Joshua D},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {11}
}

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