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Title: Nanosegregated bimetallic oxide anode catalyst for proton exchange membrane electrolyzer

A surface segregated bimetallic composition of the formula Ru.sub.1-xIr.sub.x wherein 0.1.ltoreq.x.ltoreq.0.75, wherein a surface of the material has an Ir concentration that is greater than an Ir concentration of the material as a whole is provided. The surface segregated material may be produced by a method including heating a bimetallic composition of the formula Ru.sub.1-xIr.sub.x, wherein 0.1.ltoreq.x.ltoreq.0.75, at a first temperature in a reducing environment, and heating the composition at a second temperature in an oxidizing environment. The surface segregated material may be utilized in electrochemical devices.
Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
1303839
Assignee:
UCHICAGO ARGONNE, LLC (Chicago, IL) ANL
Patent Number(s):
9,421,521
Application Number:
14/502,825
Contract Number:
AC02-06CH11357
Resource Relation:
Patent File Date: 2014 Sep 30
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

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