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Advanced Catalysts for Fuel CellsThis viewgraph presentation reviews the development of catalyst for Fuel Cells. The objectives of the project are to reduce the cost of stack components and reduce the amount of precious metal used in fuel cell construction. A rapid combinatorial screening technique based on multi-electrode thin film array has been developed and validated for identifying catalysts for oxygen reduction; focus shifted from methanol oxidation in FY05 to oxygen reduction in FY06. Multi-electrode arrays of thin film catalysts of Pt-Ni and Pt-Ni-Zr have been deposited. Pt-Ni and have been characterized electrochemically and structurally. Pt-Ni-Zr and Pt-Ni films show higher current density and onset potential compared to Pt. Electrocatalytic activity and onset potential are found to be strong function of the lattice constant. Thin film Pt(59)Ni(39)Zr(2) can provide 10 times the current density of thin film Pt. Thin film Pt(59)Ni(39)Zr(2) also shows 65mV higher onset potential than Pt.
Document ID
20070018235
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Narayanan, Sekharipuram R.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Whitacre, Jay
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Valdez, T. I.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 23, 2013
Publication Date
May 17, 2006
Subject Category
Inorganic, Organic And Physical Chemistry
Meeting Information
Meeting: Department of Energy, Annual Program Review
Location: Washington, DC
Country: United States
Start Date: May 17, 2006
Distribution Limits
Public
Copyright
Other
Keywords
fuel cells
catalysts

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