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in subjects: "Transition Elements 300503* -- Fuel Cells-- Materials, Components, & Auxiliaries"  
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Oxygen electrode in molten carbonate fuel cells

Description: Electrode kinetics of oxygen reduction on gold in molten lithium carbonate was investigated. Steady state cyclic voltammograms were obtained for the peroxide reduction at the gold electrode in Li{sub 2}CO{sub 3} melt, results were found to be in good agreement with the data in the literature. Impedance measurements were made as a function of frequency to evaluate the kinetics and mass transfer related parameters. Impedance data were analyzed using a Complex Nonlinear Least Square (CNLS) paramet… more
Date: January 1, 1988
Creator: Dave, B.; Adanuvor, P.K.; White, R.E.; Enayetullah, M.A.; Srinivasan, S. & Appleby, A. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sulfur tolerant anode materials

Description: The goal of this program is the development of a molten carbonate fuel cell (MCFC) anode which is more tolerant of sulfur contaminants in the fuel than the current state-of-the-art nickel-based anode structures. This program addresses two different but related aspects of the sulfur contamination problem. The primary aspect is concerned with the development of a sulfur tolerant electrocatalyst for the fuel oxidation reaction. A secondary issue is the development of a sulfur tolerant water-gas-sh… more
Date: February 1, 1987
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preparation and evaluation of advanced electro-catalysts for phosphoric acid fuel cells. Eighth quarterly report, October-December 1981. [Platinum]

Description: In the development of new and highly efficient porous electrocatalysts, two cooperative phenomena are required. The first is an increase in the electrocatalytic activity of the catalyst particle, and the second is the availability of that electrocatalyst particle for the electrochemical reaction. These two processes interact with each other in such a way that improvements in the electrochemical activity must be coupled with improvements in the availability of the electrocatalyst for reaction. S… more
Date: December 31, 1981
Creator: Stonehart, P.; Baris, J.; Hochmuth, J. & Pagliaro, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electrocatalysis issues in polymer electrolyte fuel cells

Description: Various electrocatalysis issues of impotance to low platinum loading polymer electrolyte fuel cells (PEFCs) are discussed. Thin film catalyst layer assemblies are used to investigate the effects of CO and CO[sub 2] on the anode as well as efforts to restore performance by oxygen bleeding into the anode feedstream. These electrodes behave differently than ionomer-impregnated E-TEK electrodes because the extra, exposed Pt in the latter case. The tolerance of Pt-Ru alloy thin film anodes to CO and… more
Date: January 1, 1993
Creator: Wilson, M.S.; Derouin, C.R.; Valerio, J.A. & Gottesfeld, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Components and materials issues in polymer electrolyte fuel cells for transportation applications

Description: Recent research work on the polymer electrolyte fuel cell (PEFC) is described. This research work addresses the goal of bringing the PEFC technology to the performance and the cost levels required for its wide spread use in transportation. The main topics are (a) a new approach to the fabrication of Pt/C catalyst layers of high performance, employing loadings as low as 0.1 mgPt/cm{sup 2}; (b) measurements and modeling of membrane, cathode catalyst and cathode backing contributions to cell loses… more
Date: January 1, 1992
Creator: Derouin, C. R.; Springer, T. E.; Uribe, F. A.; Valerio, J. A.; Wilson, M. S.; Zawodzinski, T. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Preparation and evaluation of electrocatelysts for phosphoric acid fuel cells

Description: Highly dispersed platinum has been placed on carbon supports so that they may be used as phosphoric acid fuel cell electrocatalysts. These catalysts were characterized for both the platinum surface areas and crystallite sizes. For a given carbon impregnation technique with the noble metal salt, a definite correlation between the specific surface area of the derived platinum crystallites to the BET surface area of the carbon support was found.
Date: January 1, 1978
Creator: Jalan, V M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sulfur tolerant anode materials

Description: The goal of this program is the development of a molten carbonate fuel cell (MCFC) anode which is more tolerant of sulfur contaminants in the fuel than the current state-of-the-art nickel-based anode structures. This program addresses two different but related aspects of the sulfur contamination problem. The primary aspect is concerned with the development of a sulfur tolerant electrocatalyst for the fuel oxidation reaction. A secondary issue is the development of a sulfur tolerant water-gas-sh… more
Date: February 1, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sulfur tolerant anode materials

Description: The goal of this program is the development of a molten carbonate fuel cell (MCFC) anode which is more tolerant of sulfur contaminants in the fuel than the current state-of-the-art nickel-based anode structures. This program addresses two different but related aspects of the sulfur contamination problem. The primary aspect is concerned with the development of a sulfur tolerant electrocatalyst for the fuel oxidation reaction. A secondary issue is the development of a sulfur tolerant water-gas-sh… more
Date: May 1, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fabrication and testing of TAA bonded carbon electrodes in primary fuel cells. Technical progress report No. 3, October 1978-November 1978

Description: Ten-fold increased loadings of cobalt dibensotetraazaannulene (CoTAA) have been obtained which have been shown stable for 44 days in 150/sup 0/C 85% phosphoric acid. Preliminary data on platinum-catalyzed cathodes have been obtained which show that the ECO fuel cell system is suitable for evaluating fuel cell cathode performance.
Date: December 8, 1978
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preparation and evaluation of electrocatalysts for phosphoric-acid fuel cells. Final technical report, May 1, 1978-December 31, 1979

Description: The overall objective of this electrocatalysis program was to define the feasibility of lowering the electrocatalyst cost and to increase the electrocatalyst activity in phosphoric acid fuel cells to improve the commercial viability of fuel cells for producing electric power. Highly dispersed platinum was placed on carbon supports. These catalysts were characterized for both the platinum surface areas and crystallite sizes. For a given carbon impregnation technique with the noble metal salt, a … more
Date: January 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Oxygen electrode in molten carbonate fuel cells

Description: The oxygen reduction reaction on a gold electrode in lithium carbonate melt was investigated to determine the influence of partial pressure of carbon dioxide and temperature on electrode kinetics and oxygen solubility by using cyclic Voltammetry and impedance analysis techniques. During this quarter, the impedance data were analyzed by a Complex Nonlinear Least Square (CNLS) Parameter estimation program to determine the kinetic and the mass transfer related parameters such as charge transfer re… more
Date: January 1, 1989
Creator: Dave, B. B.; Srinivasan, S.; White, R. E. & Appleby, A. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fabrication and testing of TAA bonded carbon electrodes. Quarterly technical progress report No. 4, December 1, 1978-February 28, 1979

Description: A number of platinum-catalyzed cathodes have been tested in the ECO fuel cell; they have been shown to have reproducible activity which is a function of cathode thickness: improved performance with increased thickness. Preliminary data on bonded cobalt dibenzotetraazaannulene (CoTAA) catalyzed cathodes have been obtained showing them to be as active as similarly loaded (by weight) platinum-catalyzed cathodes.
Date: March 7, 1979
Creator: Walsh, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of metal-coated ceramic anodes molten carbonate fuel cells

Description: Investigations into low cost ceramic substrates and the effect of Ni/Cu ratio for metal-coated ceramic anodes is warranted. Overall, the program follows an anode development/testing pattern which is sequentially executed in tasks for out-of-cell evaluations and for in- cell evaluations. Reports will emphasize: test procedures and set-up, testing status/data, performance results/evaluations when combined with post-test materials analyses, and recommendations. (VC)
Date: January 1, 1986
Creator: Richerson, D. W. & Khandkar, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solid-state proton conductors

Description: The purpose of this program was to survey the field of solid-state proton conductors (SSPC), identify conductors that could be used to develop solid-state fuel cells suitable for use with coal derived fuel gases, and begin the experimental research required for the development of these fuel cells. This document covers the following topics: the history of developments and current status of the SSPC, including a review of proton conducting electrolyte structures, the current status of the medium … more
Date: December 1, 1990
Creator: Jewulski, J. R.; Osif, T. L. & Remick, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fuel cell applied research: electrocatalysis and materials. Quarterly report, October 1-December 31, 1978. [Supported platinum cathode catalysts in phosphoric acid fuel cells]

Description: Investigations were carried out on the sintering of carbon supported platinum catalysts in phosphoric acid at 150/sup 0/C over a 3500-hour period. The most significant result was that the sintering rate was five times slower for these electrodes as compared with unsupported platinum electrodes. After aging the electrodes for 1200 h, attempts were made to regenerate the active areas of one of the electrodes by cycling at 100 V/s in various voltage envelopes between -0.1 V and 1.1 V. These treatm… more
Date: July 1, 1979
Creator: Srinivasan, S.; Isaacs, H. S.; McBreen, J.; O'Grady, W. E.; Olender, H.; Olmer, L. J. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Investigation of carbon-formation mechanisms and fuel-conversion rates in the adiabatic reformer. Annual report, March 19, 1980-March 19, 1981

Description: Fuel cell power plants may be required to use coal derived liquid fuels or heavy petroleum distillates as fuels. Among the fuel processor candidates, the adiabatic reformer is at the most advanced state of development. The objective of the present program is to establish a reactor model for the adiabatic reformer which will predict process stream compositions and include carbon formation processes. Four subordinate tasks were proposed to achieve the objective. These are: 1) to determine on sele… more
Date: January 1, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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New electrolytes for direct methane fuel cells. Annual report, January 10, 1977-January 9, 1978. [Perhalogenated sulfonic acids]

Description: The program is aimed at developing a fuel cell electrolyte for the direct oxidation of CH/sub 4/ and/or impure H/sub 2/ fuels. Work in the first year has focused on the di- and tribasic methane sulfonic acids CX/sub 2/(SO/sub 3/H)/sub 2/ and CX(SO/sub 3/H)/sub 3/ where X was H, F, or Cl. Synthesis of the halogenated acids proved to be more difficult than anticipated, and only three acids, viz. CH(SO/sub 3/H)/sub 3/; CH/sub 2/(SO/sub 3/H)/sub 2/; CCl/sub 2/(SO/sub 3/H)/sub 2/ were prepared in su… more
Date: January 1, 1978
Creator: Brummer, S.B.; McHardy, J.; Koch, V.; Turner, M. & Toland, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Oxygen electrodes for energy conversion and storage. Annual report, 1 October 1977-30 September 1978

Description: Research on the development of high performance, long life O/sub 2/ cathodes for both alkaline and acid electrolytes for a spectrum of applications including industrial electrolysis, fuel cells, and metal-air batteries is described. Oxygen electrocatalysts studied include platinum, silver, underpotential deposited layers and alloy metal layers on noble metal substrates, intercalated graphite, transition metal macrocyclic complexes, and transition metal oxides. Research on gas fed electrodes is … more
Date: January 15, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Oxygen Electrodes for Energy Conversion and Storage. Annual Report II, 1 October 1978-30 September 1979

Description: Progress is reported on the development of high performance oxygen electrodes for a spectrum of applications including industrial electrolysis, metal-air batteries and fuel cells. The research emphasizes the development of more effective electrocatalysts for both O/sub 2/ reduction and electrogeneration and the development of more effective electrode structures (particularly for O/sub 2/ cathodes) for utilizing these catalysts. It also includes the development of a predictive base to guide the … more
Date: January 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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