Document Detail


Mesostructured thin films as electrocatalysts with tunable composition and surface morphology.
MedLine Citation:
PMID:  23142838     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Among the most challenging issues in technologies for electrochemical energy conversion are the insufficient activity of the catalysts for the oxygen reduction reaction, catalyst degradation and carbon-support corrosion. In an effort to address these barriers, we aimed towards carbon-free multi/bimetallic materials in the form of mesostructured thin films with tailored physical properties. We present here a new class of metallic materials with tunable near-surface composition, morphology and structure that have led to greatly improved affinity for the electrochemical reduction of oxygen. The level of activity for the oxygen reduction reaction established on mesostructured thin-film catalysts exceeds the highest value reported for bulk polycrystalline Pt bimetallic alloys, and is 20-fold more active than the present state-of-the-art Pt/C nanoscale catalyst.
Authors:
Dennis F van der Vliet; Chao Wang; Dusan Tripkovic; Dusan Strmcnik; Xiao Feng Zhang; Mark K Debe; Radoslav T Atanasoski; Nenad M Markovic; Vojislav R Stamenkovic
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-11
Journal Detail:
Title:  Nature materials     Volume:  -     ISSN:  1476-1122     ISO Abbreviation:  Nat Mater     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101155473     Medline TA:  Nat Mater     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1] Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA [2].
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