A process for treating an AB5 Ni-MH battery to recover purified positive and negative electrode components of the battery is disclosed. An AB5 Ni-MH battery is placed in a mineral acid leach solution to cause the positive and negative electrode components of the battery to separate.
Energy Citations Database
Cobalt-free La(Ni,Sn)5+x alloys have been identified as low cost, corrosion resistant electrodes for nickel-metal-hydride batteries. The structure of theses alloys are similar to non-stoichiometric La(Ni,Cu)5+x compounds; i.e., they retain the P6/mmm space group while Ni dumbbells occupy La sites. Electrodes fabricated from some of ...
... AD0407611. Title : NEW HYDRIDES OF TRANSITION METALS. ... described. Work carried out on rhenium complex hydrides is also described. ...
DTIC Science & Technology
Metal hydride hydrogen absorbers are fast enough to capture the boiloff ... This leads to many cycles of use for the hydride and a ...
NASA Website
Performance Modeling of the Metal Hydride Electrode Performance Modeling of the Metal Hydride for the electrochemical characterization of MH electrodes to understand and predict the performance of metal hydride (MH electrodes to understand and predict the performance of ...
E-print Network
... "Complex Metal Hydrides. ... v Concerning the Preparation of Dialkyl(aryl) aminomagnesium jHydrides and Alkoxy(aryloxy)magnesiam Hydrides . . . ...
A method for controlling hydrogen charging of hydride forming metals through a window of a superimposed layer of a non-hydriding metal overlying the portion of the hydride forming metals to be charged.
A method is described for controlling hydrogen charging of hydride forming metals through a window of a superimposed layer of a non-hydriding metal overlying the portion of the hydride forming metals to be charged.
A method for preparing porous metallic-matrix hydride compacts which can be repeatedly hydrided and dehydrided without disintegration. A mixture of a finely divided metal hydride and a finely divided matrix metal is contacted with a poison which prevents the ...
DOE Information Bridge
The present invention provides a non-stoichiometric alloy comprising a composition having the formula AB.sub.5+X an atomic ratio wherein A is selected from the group consisting of the rare earth metals, yttrium, mischmetal, or a combination thereof; B is nickel and tin, or nickel and tin and at least a third element selected from the group consisting of the elements in group ...
The advantages and development of nickel-metal hydride and silver-metal hydride batteries for aerospace applications are examined. Hydride electrode materials, electrode preparation, nickel-metal hydride and silver-hydride chemistry ...
NASA Astrophysics Data System (ADS)
Molecules and Ions: Metal Hydrides, Halides, and Cyanides ... species and their ions, as well as metal halides and cyanides. A new avenue of ...
The performance and suitability of various metal hydride materials were examined for use as possible
NASA Technical Reports Server (NTRS)
... EVALUATION OF LIGHT.METAL HYDRIDES ... (UNCLASSIFIED TITLE) S- CHARACTERIZATION AND EVALUATION OF LIGHT METAL HYDRIDES ...
A new lattice gas model has been developed, describing the hydrogen storage in hydride-forming materials. This model is based on the mean-field theory and Bragg-Williams approximation. To describe first-order phase transitions and two-phase coexistence regions, a binary alloy approach has been adopted. A complete set of equations describing pressure-composition isotherms and ...
... HYDRIDE AND FLUORIDE INVESTIGATIONS, P. ... SPECTROSCOPY, METALS, MOLECULES, ROCKET PROPELLANTS, STABILITY, SYNTHESIS ...
... Accession Number : AD0627812. Title : COMPLEX HYDRIDES AND ZEROVALENT DERIVATIVES OF TRANSITION METALS. ...
... Abstract : THE CORROSIVE EFFECTS OF LITHIUM HYDRIDE, LITHIUM, AND VARYING MIXTURES OF LITHIUM HYDRIDE AND LITHIUM UPON ...
... FINAL REPORT, INVESTIGATION OF LIQUID-METAL HYDRIDES LR Grant FC Gunderloy, Jr. ... Final Report, 1wrestigation of Liquid-Metal Hydrides ...
Hydrogen reactions, crystal structures and morphology, diffusion of hydrogen in metals, physical and electronic properties, electronic structure, superconductivity in metal hydrides, thorium hydrides, and palladium hydrides are discussed.
... Final Report HydrogenStorage in Metal Hydrides for the period September 1989 to March 1990 DTIC ... Hydrogen Storage in Metal Hydrides (U) 12. ...
... and Fabricate a Metallic Hydride Heat Pump with a ... was sought to reduce this electrical load. ... Metal hydride heat pumps were proposed as for this ...
... AD0742145. Title : Complex Metal Hydrides. ... binders. New complex metal hydrides of magnesium, zinc and copper have been prepared. ...
Development of Nanocrystalline Complex Metal Hydrides for ... Mg and Al alloys which can potentially be used for producing metal hydrides with low ...
This paper discusses some of the metal hydride and intermetallic compounds which readily absorb the hydrogen gas by a simple contact to form metal hydrides. Metal hydrides have several important properties for the hydrogen isotope separation.
A method to produce silica embedded metal hydride was developed. The product is a composite in which metal hydride particles are embedded in a matrix of silica. The silica matrix is highly porous. Hydrogen gas can easily reach the embedded metal hydride p...
National Technical Information Service (NTIS)
Mar 2, 2011 ... Metal hydrides are chemical compounds formed by the reaction of ... Metal hydrides that react at room temperature were discovered in the ...
... Accession Number : ADA141496. Title : Mechanical Properties of Metal Hydrides. Descriptive Note : Technical rept.,. Corporate ...
... Accession Number : AD0381796. Title : INVESTIGATION OF LIQUID-METAL HYDRIDES. Descriptive Note : Final rept. Corporate ...
... It consists of a metal hydride, such as lithium hydride, aluminum metal and an elastomer binder, such as butyl rubber, which generate hydrogen gas ...
... THE COMBUSTION OF A LIGHT METAL HYDRIDE GELLED FUEL ... HYDRIDES (U) (*LIQUID ROCKET PROPELLANTS), (*THIXOTROPIC ROCKET ...
... I The absorption and desorption properties of metal hydrides are determined ... The small difference between the absorption and desorption ...
... Accession Number : AD0425588. Title : COMPLEX TRANSITION METAL HYDRIDES,. Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF ...
... Accession Number : AD0705113. Title : COMPLEX METAL HYDRIDES. HIGH ENERGY FUEL COMPONENTS FOR SOLID ...
... Accession Number : AD0686854. Title : COMPLEX METAL HYDRIDES. HIGH ENERGY FUEL COMPONENTS FOR SOLID ...
... Accession Number : ADP002444. Title : Application of Metal Hydrides for Gas Handling in Hydrogen Masers,. Corporate ...
A metal hydride is a chemical compound formed from the reaction of hydrogen .... hydride phase.This is the ideal behaviorof metal hydrides. ...
... November 1961 - October 1962 NEW HYDRIDES OF TRANSITION METALS by ... carried out by M. Angoletta on iridium complex hydrides, which has ...
... Title : Metal Hydride-Air Battery. ... The systems are easily refuelable with pellets of solid sodium aluminum hydride and water to generate hydrogen. ...
The behavior of the metal hydride sorbent beds used in the sorption compressors ... power requirements and to enhance hydride durability during extended ...
Exchange of deuterium was studied with commercial potassium and barium hydrides, hydrides of pure niobium and tantalum metals, yttrium hydride, and with hydrides of rare earths metals. Non-stoichiometric composition of the hydrides made ...
The role of metal hydrides in the hydrogen embrittlement of a number of metal-hydrogen systems is reviewed. The stress induced formation and cleavage of hydrides at crack tips and the thermodynamics of the hydrides in the stress field of the crack tip are...
The initial thermally activated decomposition of several complex metal hydride compounds, to a binary alkali or alkaline hydride and a group IIIb metal hydride, appears to share a first step in their decomposition mechanisms. The application of this initi...
... (1) where M is a metal (or metal alloy), x is a non-stoichiometric constant and f H � is the hydride formation heat. Note that metal ...
Most of current hydride technology at Savannah River Site is based on beds of metal hydride powders; the expansion upon hydridation and the cycling results in continued breakdown into finer particles. Goal is to develop a composite which will contain the ...
(Zirconium) � Metal hydrides: NaH (Sodium hydride), LiAlH (Lithium tetradydrioaluminate)4 � Nonmetal hydrides
The invention relates to a method and means for controlling the hydrogen pressure in a furnace system for hydriding a metal or alloy workpiece to a massive hydride structure by (1) controlling the flow of hydrogen into said system at a rate which is less ...
Fullerene-hydrides, C60Hx, have a significantly improved volumetric and weight density for hydrogen storage than the best metal-hydrides. ...
The research will establish the nature of the electrochemical hydrogenation and dehydrogenation of C60 as a function of environmental conditions. ...
Jan 22, 2011 ... Metaheuristic Optimization Algorithm OASIS � metal coatings � metal hydride alloys � metal hydride alloys hydrogen absorption ...
... Title : THE STRENGTH AND PLASTICITY OF ANISOTROPIC METALS. Corporate Author : METAL HYDRIDES INC BEVERLY MA. ...
... Accession Number : AD0249455. Title : THE DIFFUSION OF HYDROGEN IN TRANSITION METALS AND THEIR HYDRIDES. ...
... Investigation of the synthesis of metal hydrides by the reaction of hydrogen, a metal halide, and a Grignard reagent was completed. ...
... THE COMBUSTION OF A LIGHT METAL HYDRIDE GELLED FUEL ... Subject Categories : COMBUSTION AND IGNITION ROCKET PROPELLANTS. ...
Dry homogenized metal hydrides, in particular aluminum hydride compounds, as a material for reversible hydrogen storage is provided. The reversible hydrogen storage material comprises a dry homogenized material having transition metal catalytic sites on a metal aluminum ...
METALLIC HYDRIDES. Magnetic properties of laves-phase rare earth hydrides J. J. Rhyne and G. E . The 0 K iron sublat- tice moment in ErFe2H3 5 is essentially the same as that found in the non-hydride] have shown that the RFe2 compounds readily absorb hydrogen and form a hydride phase with ...
Theoretical and experimental investigations of a metal hydride heat storage system are presented. Two types of model reactors, one with quasi-two-dimensional and the other with axisymmetric filling of metal hydride, were constructed. The reaction and heat...
The thermally activated metal hydride sensor actuator which forms the subject matter of this invention utilizes a thermal hollow sensor with the metal hydride therein. This sensor is opened at one end where it is connected to a normally biased piston head...
Nickel metal hydride and silver metal hydride batteries are being developed for aerospace applications. There is a growing market for smaller, lower cost satellites which require higher energy density power sources than aerospace nickel-cadmium at a lower...
This paper describes some development work on a hydrogen recovery process based on the use of metal hydrides. The results reported here indicate that with respect to mercaptan-alloy interactions a metal hydride hydrogen recovery process may be devised whi...
Metal hydrides offer safe, compact and efficient ways to process tritium in areas including storage, pumping, compression, transportation and purification. Westinghouse at Savannah River Site in USA has developed and implemented metal hydride based techno...
Jan 22, 2011 ... dc.description.abstract, Metal hydride allows in alkaline Ni-MH rechargeable ... dc.title, Cyclic Voltammetric Behavior of AB5 Metal Hydride ...
The review on experimental data on negative ion emission by hydrides of alkali and alkali-earth metals is given. Prospects of ion hydride application in negative hydrogen ion sources are analyzed. Requirements to hydride emitters are discussed. On the bas...
Data are included from studies of the chemical bonds between lanthanum and hydrogen and cerium and hydrogen, kinetics of cerium hydridation, chemical and physical structure and dissociation pressure of cerium hydrides, and the properties of praseodymium, neodymium, samarium, europium, gadolinium, and ytterbium hydrides. ...
A method to produce silica embedded metal hydride was developed. The product is a composite in which metal hydride particles are embedded in a matrix of silica. The silica matrix is highly porous. Hydrogen gas can easily reach the embedded metal hydride particles. The pores ...
A detailed analysis of the formation energies for alkali, earth-alkali, and transition-metal hydrides is presented. The hydriding energies are computed for various crystal structures using density functional theory. The early transition metals are found to have a strong tendency for hydride ...
... Accession Number : ADA131543. Title : Transition-Metal-Promoted Reactions of Boron Hydrides. 4. A One-Step Synthesis ...
... Accession Number : ADA113368. Title : Transition-Metal-Promoted Reactions of Boron Hydrides. 2. Synthesis and Thermolysis ...
This report consists of two sections: the first is concerned with hydrides and the second with the interesting pure metals and their nonhydrogenous alloys. No attempt at critical comment on the data reported in the abstracted reports is made.
By extrapolation it is expected that the silver metal hydride system ... all the present day silver-zinc and silver-cadmium cell applications in both the ...
... Accession Number : ADA056591. Title : Reversible Metal Hydride-Air Fuel Cell. Descriptive Note : Final rept. Feb 1977-Feb 1978. ...
A nickel metal hydride battery was discharged at high rate in a microgravity environment. Data from the flight is compared to data taken on the earth's surface.
Compositions are disclosed which comprise a metal oxide substrate having niobium (V) hydride/oxide bound to the surface thereof.
Jan 22, 2011 ... BEACON eSpace at Jet Propulsion Laboratory >. Items for Subject "Metal hydrides gas gap thermal switches hydrogen storage" ...
Jan 22, 2011 ... Title: Metal hydrides for energy storage and conversation applications. Authors: Bowman, R. C.. Sandrock, G. Issue Date: 17-Nov-2003 ...
Metal Hydrides for Hydrogen Separation, Recovery and Purification. M. Hampton. University of Central Florida. D. Slattery. Florida Solar Energy Center ...
Metal Hydrides for Energy Storage and Conversion Applications. Robert C. Bowman Jr. and Gary Sandrock'. 'Jet Propulsion Laboratov, California Institute of ...
... Accession Number : ADA014174. Title : Metal Hydrides for Energy Storage Applications. Descriptive Note : Technical note 1 Jul 73-30 Jun 74,. ...
Metal hydrides are uniquely controllable phase-change materials with the potential to control and use heat in future space thermal energy control systems . ...
A promising alternative for hydrogen storage is storage as a metal hydride. The properties and applications of those systems which have proven or potential utility as hydrogen storage compounds are summarized. Specific systems discussed are magnesium allo...
... Title : Metal Hydride Preheater for the M2 Diesel Burner. ... Furthermore, the resulting burner is considerably smaller and lighter than the M2 burner. ...
... Accession Number : AD0373948. Title : MECHANISMS OF LIGHT-METAL HYDRIDE REACTIONS. Descriptive Note : Final rept. 1 Jul 64-31 May 66,. ...
... Accession Number : AD0362055. Title : MECHANISMS OF LIGHT-METAL HYDRIDE REACTIONS. Descriptive Note : Annual technical rept. no. ...
... Title : LIGHT METAL HYDRIDE-2 SUPPLY. ... and improve the product propellant mix viscosity. ... SOLID ROCKET PROPELLANTS, *SOLID ROCKET ...
Isotopic exchange, the exchange of one isotope for another, is a technique that can be used to reduce the tritium content of a metal hydride so waste acceptance criteria can be met.
... Accession Number : ADA228150. Title : Hydrogen Storage in Metal Hydrides. Descriptive Note : Final rept. Sep 1989-Mar 1990,. ...
... Title : High Energy Metal Hydride Fuel Cell Power Source,. ... The reactant chemicals used by fuel cells are supplied from an external source. ...
Jan 22, 2011 ... Title: Development of metal hydride beds for sorption cryocoolers in space applications. Authors: Bowman, R. C.. Issue Date: 2-Sep-2002 ...
... Title : Compton Scattering Studies of Metals and Hydrides with 412 KeV Gamma Radiation. Descriptive Note : Final technical rept. Oct 77-Sep 79,. ...
... Georgia Jnstitute of Technology v...qOU Complex Metal Hydrides High Energy Fuel aoponents for Solid Propellent locket lotors ...
... Accession Number : ADA057764. Title : Complex Metal Hydrides. High Energy Fuel Components for Solid Propellant Rocket Motors. ...
... Accession Number : ADA023783. Title : Complex Metal Hydrides. High Energy Fuel Components for Solid Propellant Rocket Motors. ...
... Accession Number : ADA007353. Title : Complex Metal Hydrides. High Energy Fuel Components for Solid Propellant Rocket Motors. ...
... Accession Number : AD0774129. Title : Complex Metal Hydrides. High Energy Fuel Components for Solid Propellant Rocket Motors. ...
... Accession Number : AD0760346. Title : Complex Metal Hydrides. High Energy Fuel Components for Solid Propellant Rocket Motors. ...
... Accession Number : AD0722374. Title : Complex Metal Hydrides. High Energy Fuel Components for Solid Propellant Rocket Motors. ...
... Accession Number : ADA132971. Title : Addition Compounds of Alkali-Metal Hydrides. 23. Preparation of Potassium Triisopropoxyborohydride ...
... Accession Number : ADA113414. Title : Addition Compounds of Alkali-Metal Hydrides. 21. Rapid Reaction of Dialkyl- and ...
... Accession Number : AD0845176. Title : 30-Watt Metal Hydride/Air Fuel Cells System. Descriptive Note : Technical rept.,. ...
Metal-Alkane Complexes. Rapid Exchange of Hydrogen Atoms between Hydride and Methyl Ligands in [(C5 of a transition metal methyl/hydride complex in which the hydrogen atoms of the alkyl and hydride are exchanging) is formed reversibly from the methyl/hydride complex over ...
BS>A method is described for hydriding a body of a Group IV-B metal, preferably zirconium, to produce a crack-free metal-hydride bedy of high hydrogen content by cooling the body at the beta to beta + delta boundary, without further addition of hydrogen, to precipitate a fine-grained delta-phase metal ...
A dimensionally stable hydride composition and a method for making such a composition. The composition is made by forming particles of a metal hydride into porous granules, mixing the granules with a matrix material, forming the mixture into pellets, and sintering the pellets in the absence of oxygen. The ratio of matrix material to ...
A dimensionally stable hydride composition and a method for making such a composition are disclosed. The composition is made by forming particles of a metal hydride into porous granules, mixing the granules with a matrix material, forming the mixture into pellets, and sintering the pellets in the absence of oxygen. The ratio of matrix ...
Metal hydrides have been used at the Savannah River Tritium Facilities since 1984. However, the most extensive application of metal hydride technology at the Savannah River Site is being planned for the Replacement Tritium Facility, a $140 million facility schedules for completion in 1990 and startup in 1991. In ...
An analysis was made of published data on hydrides and the following classifications are suggested: 1. Ion- or saltforming hydrides formed by non- transitional metals with external S electrons of first ionization potential from 3 to 7 ev (alkali hydrides and alkali earth metals except Be ...
The Brookhaven National Laboratory, Department of Energy and Environment has been engaged in finding solutions to the engineering problems associated with the storage of hydrogen as metal hydrides - principally iron-titanium hydride. The thermal conductiv...
Techniques developed for forming rods, plates, and special configurations of zirconium and other metal hydrides are presented. The products are dense and sound, with maximum thermal and electric conductivities. Applications of the hydrides are also discussed. (P.C.H.)
During the past 10 years, work was carried out on the preparation of new and unusual simple and complex metal hydrides of the main group elements. Several new hydrides of propellant interest were prepared and the chemistry related to the preparation and r...
