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Title: Final Report: Cathode Catalysis in Hydrogen/Oxygen Fuel Cells: New Catalysts, Mechanism, and Characterization

In this research, we prosecuted a comprehensive plan of research directed at developing new catalysts and new understandings relevant to the operation of low temperature hydrogen-oxygen fuel cells. The focal point of this work was one centered on the Oxygen Reduction Reaction (ORR), the electrochemical process that most fundamentally limits the technological utility of these environmentally benign energy conversion devices. Over the period of grant support, we developed new ORR catalysts, based on Cu dimers and multimers. In this area, we developed substantial new insight into design rules required to establish better ORR materials, inspired by the three-Cu active site in laccase which has the highest ORR onset potential of any material known. We also developed new methods of characterization for the ORR on conventional (metal-based) catalysts. Finally, we developed a new platform to study the rate of proton transfer relevant to proton coupled electron transfer (PCET) reactions, of which the ORR is an exemplar. Other aspects of work involved theory and prototype catalyst testing.
Authors:
 [1] ;  [2] ;  [1] ;  [1]
  1. Univ. of Illinois, Urbana, IL (United States). Dept. of Chemistry
  2. Univ. of Illinois, Urbana, IL (United States). Dept. of Chemical and Biomolecular Engineering
Publication Date:
OSTI Identifier:
1234970
Report Number(s):
DOE-ILLINOIS--46260
DOE Contract Number:
FG02-05ER46260
Resource Type:
Technical Report
Research Org:
Univ. of Illinois, Champaign, IL (United States). Board of Trustees, Grants and Contracts
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE Oxygen Reduction Reaction, Copper, Electrochemistry