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in subjects: "Lithium Iodides"  
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Basic research on ceramic materials for energy storage and conversion systems. Progress report, December 1, 1979-November 30, 1980

Description: The present research program involves utilizing appropriate experimental probes for measuring the movement of ionic and electronic charge carriers in ceramic materials suitable for solid electrolyte and electrode applications in high-performance, secondary battery and fuel cell systems. Special emphasis is placed on developing: (1) a better understanding of the effects of structure, impurities and composition on charge carrier transport mechanisms in such materials; and (2) detailed knowledge o… more
Date: December 1, 1980
Creator: Whitmore, D.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of a bipolar cell for electrochemical production of lithium

Description: Lithium metal can be electrolytically refined from aqueous solutions of its compounds by partial reduction to form a lithium amalgam, followed by reduction of the amalgam to liquid lithium in a molten salt cell at 225 C. A bipolar cell (with a continuous, amalgam electrode circulating between the aqueous and salt cells) was designed, constructed and successfully tested on the bench scale, as a proof of principle of an efficient, safe and low-temperature alternative to existing processes.
Date: February 22, 1995
Creator: Cooper, J.F.; Mack, G.; Peterman, K.; Weinland, S. & McKenzie, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of a bipolar cell for lithium production

Description: The authors report development and bench-scale testing of an electrolytic process for reduction of LiOH to lithium metal through an amalgam intermediate. The amalgam is formed in an aqueous-electrolyte cell and stripped in a molten salt cell using a LiI-CsI eutectic at 225 C. Total energy efficiency is >70%. The process obviates high temperature materials problems, chlorine evolution and anhydrous feedstocks. While the principle is proven, sustained operation of the cell is now needed to obtain… more
Date: July 1, 1995
Creator: Cooper, J. F.; Ebbinghaus, B. B.; Peterman, K.; Weinland, S. & McKenzie, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Enhanced ionic conduction at the film/substrate interface in LiI thin films grown on sapphire(0001)

Description: The ionic conductivity of LiI thin films grown on sapphire(0001) substrates has been studied in-situ during deposition as a function of film thickness and deposition conditions. LiI films were produced at room temperature by sublimation in an ultra-high-vacuum system. The conductivity of the LiI parallel to the film/substrate interface was determined from frequency-dependent impedance measurements as a function of film thickness using Au interdigital electrodes deposited on the sapphire surface… more
Date: December 1, 1993
Creator: Lubben, D. & Modine, F. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Excess Thermodynamic Properties of Concentrated Aqueous Solutions at High Temperatures

Description: Measurements of the vapor pressure of the solvent in wide ranges of concentration and temperature provide information on solute solvation and ion pairing--the two phenomena most often invoked for description of dilute solutions. Even in moderately concentrated solutions, as interionic distances become comparable to ionic diameters, these simple concepts gradually lose their meaning and solutions behave like molten salts. The usefulness of experimental vapor pressure results increases rapidly wi… more
Date: June 7, 2001
Creator: Guszkiewicz, M.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Improvements in apparatus and procedures for using an organic liquid scintillator as a fast-neutron spectrometer for radiation protection applications

Description: For use in radiation protection measurements, a neutron spectrometer must have a wide energy range, good sensitivity, medium resolution, and ease of taking and reducing data. No single spectrometer meets all of these requirements. Several experiments aimed at improving and characterizing the detector response to gamma rays and neutrons were conducted. A light pipe (25 mm) was needed between the scintillator cell and the photomultiplier tube to achieve the best resolution. The light output of th… more
Date: May 15, 1987
Creator: Thorngate, J.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lithium--water--air battery project: progress during the month of March 1977. [LLL]

Description: The electrode behavior of the system, Ca/aq.-NaOH, NaCl, was investigated at ambient temperatures. Limiting currents were noted for intermediate concentrations of NaOH and NaCl, while rapid passivation at high ratios of NaOH to NaCl occurred. Low ratios of NaOH/NaCl yielded uncontrollable hydrogen evolution and rapid calcium dissolution. A model of the aqueous cell of the proposed system for the production of lithium was completed. The apparatus allows simultaneous determination of current effi… more
Date: April 11, 1977
Creator: Cooper, J. F.; Hosmer, P. K.; Kelly, B. E.; Krikorian, O. H. & Parrish, W. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mechanisms of enhanced ionic conduction at interfaces in ceramics

Description: A large enhancement in the ionic conductivity of certain compounds occurs when the compound is produced as a composite material containing a finely-dispersed non-conductor such as SiO{sub 2} or Al{sub 2}O{sub 3}. This paper describes recent experiments which proposes that extended defects such as dislocations and grain boundaries, either resulting from or stabilized by the interface, are responsible for the enhancement. The ionic conductivities of LiI and CaF{sub 2} thin films grown on sapphire… more
Date: November 1, 1994
Creator: Lubben, D. & Modine, F.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Modification of LiCl-LiBr-KBr electrolyte for LiAl/FeS{sub 2} batteries

Description: The bipolar LiAl/FeS{sub 2} battery is being developed to achieve the high performance and long cycle life needed for electric vehicle application. The molten-salt (400 to 440 C operation) electrolyte composition for this battery has evolved to support these objectives. An earlier change to LiCl-LiBr-KBr electrolyte is responsible for significantly increased cycle life (up to 1,000 cycles). Recent electrolyte modification has significantly improved cell performance; approximately 50% increased … more
Date: June 1, 1996
Creator: Kaun, T. D.; Jansen, A. N.; Henriksen, G. L. & Vissers, D. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Reactions of the toluene-insoluble, pyridine-soluble fraction of Illinois No. 6 coal

Description: Illinois No. 6 coal was extracted with pyridine at 100/sup 0/ and the toluene-insoluble, pyridine-soluble (TIPS) fraction of the extract was used as a model for the 84% of insoluble coal. Various TIPS fractions had number-average molecular weights (anti M/sub n/) in pyridine of 980 to 1380 but were insoluble or only partly soluble in most other solvents. Elemental and /sup 1/H and /sup 13/C NMR analyses indicate an H/C ratio of only 1.3 in the aliphatic portions of the TIPS molecules. The TIPS … more
Date: January 1, 1979
Creator: Mayo, F. R.; Buchanan, D. H. & Pavelka, L. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Simultaneous transport of synthetic colloids and a nonsorbing solute through single saturated natural fractures

Description: Tracer transport experiments involving colloids that showed little tendency to attach to rock surfaces and a nonsorbing solute (iodide) -were conducted in three different well-characterized natural fractures in tuff. The colloids always arrived earlier in the effluent than the iodide, which we believe is evidence of (1) hydrodynamic chromatography and/or (2) the fact that the colloids experience a smaller effective volume in the fracture because they diffuse too slowly to enter low-velocity reg… more
Date: September 1, 1994
Creator: Reimus, P. W.; Robinson, B. A.; Nuttall, H. E. & Kale, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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