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Assessment of deposition for power-plant molten-carbonate fuel cells

Description: Particulate deposition in molten carbonate fuel cell anodes is addressed for operation with future coal gasification power plants. Power plant systems factors affecting deposition are explored such as gas cleanup requirements for particulate removal and gasifier product gas composition differences for various gasifier types and operational modes (air blown versus oxygen blown). Effects of fuel cell characteristics (including average cell current density and fuel utilization) on anode deposition… more
Date: March 15, 1982
Creator: Wenglarz, R. A.
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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Hydrogen Production and Delivery Research

Description: In response to DOE's Solicitation for Grant Applications DE-PS36-03GO93007, 'Hydrogen Production and Delivery Research', SRI International (SRI) proposed to conduct work under Technical Topic Area 5, Advanced Electrolysis Systems; Sub-Topic 5B, High-Temperature Steam Electrolysis. We proposed to develop a prototype of a modular industrial system for low-cost generation of H{sub 2} (<$2/kg) by steam electrolysis with anodic depolarization by CO. Water will be decomposed electrochemically into… more
Date: October 15, 2007
Creator: Balachov, Iouri
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nanostructured Solid Oxide Fuel Cell Electrodes

Description: The ability of Solid Oxide Fuel Cells (SOFC) to directly and efficiently convert the chemical energy in hydrocarbon fuels to electricity places the technology in a unique and exciting position to play a significant role in the clean energy revolution. In order to make SOFC technology cost competitive with existing technologies, the operating temperatures have been decreased to the range where costly ceramic components may be substituted with inexpensive metal components within the cell and stac… more
Date: December 15, 2007
Creator: Sholklapper, Tal Zvi
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Performance of Lithium Ion Cell Anode Graphites Under Various Cycling Conditions

Description: Graphites MCMB-2810 and OMAC-15 (made by Osaka Gas Inc.), and SNG12 (Hydro Quebec, Inc.) were evaluated (in coin cells with lithium counter electrodes) as anode materials for lithium-ion cells intended for use in hybrid electric vehicles. Though the reversible capacity obtained for SNG was slightly higher than that of OMAC or MCMB, its 1st cycle efficiency was lower. Voltage vs capacity plots of cycling data show that the discharge and charge limits shift to higher capacity values due to contin… more
Date: June 15, 2009
Creator: Ridgway, Paul; Zheng, Honghe; Liu, Gao; Song, Xiangun; Guerfi, Abdelbast; Charest, Patrick et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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CHARACTERIZATION TESTING AND ANALYSIS OF SINGLE CELL SO2 DEPOLARIZED ELECTROLYZER

Description: This document reports work performed at the Savannah River National Laboratory (SRNL) that further develops the use of a proton exchange membrane or PEM-type electrochemical cell to produce hydrogen via SO{sub 2}-depolarized water electrolysis. This work was begun at SRNL in 2005. This research is valuable in achieving the ultimate goal of an economical hydrogen production process based on the Hybrid Sulfur (HyS) Cycle. The HyS Process is a hybrid thermochemical cycle that may be used in conjun… more
Date: September 15, 2006
Creator: Steimke, J & Timothy Steeper, T
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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In situ measurement of electromigration-induced transient stress in Pb-free Sn-Cu solder joints by synchrotron radiation based X-ray polychromatic microdiffraction

Description: Electromigration-induced hydrostatic elastic stress in Pb-free SnCu solder joints was studied by in situ synchrotron X-ray white beam microdiffraction. The elastic stresses in two different grains with similar crystallographic orientation, one located at the anode end and the other at the cathode end, were analyzed based on the elastic anisotropy of the {beta}-Sn crystal structure. The stress in the grain at the cathode end remained constant except for temperature fluctuations, while the compre… more
Date: May 15, 2009
Creator: Chen, Kai; Tamura, Nobumichi; Kunz, Martin; Tu, King-Ning & Lai, Yi-Shao
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Closeout Report for Hybrid Sulfur Pressurized Button Cell Test Facility

Description: This document is the Close-Out Report for design and partial fabrication of the Pressurized Button Cell Test Facility at Savannah River National Laboratory (SRNL). This facility was planned to help develop the sulfur dioxide depolarized electrolyzer (SDE) that is a key component of the Hybrid Sulfur Cycle for generating hydrogen. The purpose of this report is to provide as much information as possible in case the decision is made to resume research. This report satisfies DOE Milestone M3GSR10VH… more
Date: September 15, 2010
Creator: Steeper, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Materials System for Intermediate Temperature Solid Oxide Fuel Cell

Description: AC complex impedance spectroscopy studies were conducted on symmetrical cells of the type [gas, electrode/LSGM electrolyte/electrode, gas]. The electrode materials were slurry-coated on both sides of the LSGM electrolyte support. The electrodes selected for this investigation are candidate materials for SOFC electrodes. Cathode materials include La{sub 1-x}Sr{sub x}MnO{sub 3} (LSM), LSCF (La{sub 1-x}Sr{sub x}Co{sub y}Fe{sub 1-y}O{sub 3}), a two-phase particulate composite consisting of LSM + do… more
Date: February 15, 2004
Creator: Pal, Uday B. & Gopalan, Srikanth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Modeling the Cathodic Region in Crevice Corrosion Under a Thin Electrolyte Film Including Particulates

Description: The present state of understanding of localized corrosion of passive metals is based primarily upon behavior under fully immersed solutions. There has been limited analysis of localized corrosion in moist layers of dust, particulate and deposits. This work as part of a multi-university Corrosion Cooperative of the DOE-OCRWM Science and Technology Program established to enhance the understanding of corrosion processes and materials performance. The objective of this project is to develop models … more
Date: June 15, 2005
Creator: Agarwal, A. S.; Landau, U.; Shan, X. & Payer, J. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aging tests of full scale CMS muon cathode strip chambers

Description: Two CMS production Cathode Strip Chambers were tested for aging effects in the high radiation environment at the Gamma Irradiation Facility at CERN. The chambers were irradiated over a large area: in total, about 2.1 m{sup 2} or 700 m of wire in each chamber. The 40% Ar+50%CO{sub 2}+10%CF{sub 4} gas mixture was provided by an open-loop gas system for one of the chambers and by closed-loop recirculating gas system for the other. After accumulating 0.3-0.4 C per centimeter of a wire, which is equ… more
Date: October 15, 2003
Creator: al., D. Acosta et
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Science of Electrode Materials for Lithium Batteries - Progress Report

Description: OAK-B135 (IPLD Cleared) Basic materials science research on materials for anodes and cathodes in electrochemical cells. The work is a mix of electrochemical measurements and analysis of the materials by transmission electron microscopy and x-ray diffractometry. The emphasis is on the thermodynamics and kinetics of how lithium is intercalated and de-intercalleted into anode and cathod materials.
Date: August 15, 2003
Creator: Fultz, Brent
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Test Plan for Characterization Testing of SO2-depolarized Electrolyzer Cell Designs

Description: SRNL received funding in FY 2005 to test the Hybrid Sulfur (HyS) Process for generating hydrogen. This technology employs an electrolyzer that uses a sulfur dioxide depolarized anode to greatly reduce the electrical energy requirement. The required current is the same as for conventional electrolysis of water, but the required cell voltage is reduced. The electrolyzer is a key part of HyS technology. Completing the material loop for HyS requires a high temperature decomposition of sulfuric acid… more
Date: February 15, 2006
Creator: Steimke, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Fundamental Role of Nano-Scale Oxide Films in the Oxidation of Hydrogen and the Reduction of Oxygen on Noble Metal Electrocatalysts: Final Report

Description: The derivation of successful fuel cell technologies requires the development of more effective, cheaper, and poison-resistant electrocatalysts for both the anode (H{sub 2} oxidation in the presence of small amounts of CO from the reforming of carbonaceous fuels) and the cathode (reduction of oxygen in the presence of carried-over fuel). The proposed work is tightly focused on one specific aspect of electrocatalysis; the fundamental role(s) played by nanoscale (1-2 nm thick) oxide (''passive'') … more
Date: April 15, 2005
Creator: Macdonald, Digby
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electrochemical studies of the Mg2Si thin films prepared with pulsed laser deposition

Description: Electrochemically active thin films of Mg2Si (film thickness of 137 nm) have been prepared with the pulsed laser deposition technique. The film showed stable cycle behavior at 0.1 * 1.0 V vs Li with capacity greater than 800 mAh/g for more than 100 cycles. Though film morphology becomes remarkably rougher with cycling, this film showed continuous high stability in cycling. The capacity retention might be attributed to limited structural volume change in 2-dimensional film, easier lithium diffus… more
Date: September 15, 2001
Creator: Song, Seung-Wan; Striebel, Kathryn & Cairns, Elton
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Dense Membranes for Anode Supported all Perovskite IT-SOFCs

Description: Innovative wet chemical synthetic techniques were employed to obtain highly ionic conducting dense perovskites, mixed conducting porous perovskites, and electronically conducting perovskite membranes to be as electrolyte, cathode, anode, and interconnect for assembling all perovskite IT-SOFC system. Processing conditions were optimized to obtain well sintered LSM, LSF, LSCF, LNF, and LCF for SOFC cell and stacks working at 600-800 C. Series of nanocrystalline bulk and thin films of La{sub 0.8}S… more
Date: September 15, 2007
Creator: Bobba, Rambabu
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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