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| Number | Title | Issue Date |
| 8079464 | Hydrogen storage materials In one embodiment, a hydrogen storage system includes a core of hydrogen sorbent material and a shell of crystalline metal hydride material enclosing at least a portion of the core of hydrogen sorbent material. In another embodiment, the hydrogen storage system furt... | 12/20/2011 |
| 7413589 | Method of producing hydrogen storage alloy A melt of a hydrogen storage alloy having an arbitrary composition is cooled gradually at a cooling rate of 5° C./min or less and solidified. Alternatively an alloy having an arbitrary composition, after heating to a temperature equal to or more than a melting poin... | 08/19/2008 |
| 7405013 | Thermoelectric conversion of heat released during use of a power-plant or hydrogen storage material A method of generating electrical current in a system comprising a power-plant unit and/or hydrogen storage medium by transferring heat generated by the hydrogen storage medium and/or power-plant unit to a thermoelectric device, and converting the heat to generate e... | 07/29/2008 |
| 7404842 | Microfabricated hydrogen storage device and metal hydride fuel cell/battery A hydrogen storage system is described that can fabricated under ambient atmospheric conditions and humidity. The hydrogen storage system includes hydrogen-absorbing alloy particles, such as ABx-type alloys, for example LaNi4.7Al0.3,... | 07/29/2008 |
| 7393500 | Hydrogen storage alloys having improved cycle life and low temperature operating characteristics Electrochemical and gas phase hydrogen storage alloy compositions that provide superior performance, especially at low temperature, and excellent cycle life characteristics. The alloys of this invention are AB5 type alloys that include a cycle life enhanc... | 07/01/2008 |
| 7378188 | Storage device and method for sorption and desorption of molecular gas contained by storage sites of nano-filament laded reticulated aerogel An apparatus and method for sorption and desorption of molecular gas contained by storage sites of graphite nano-filaments randomly disposed in three-dimensional reticulated aerogel. ... | 05/27/2008 |
| 7344677 | Hydrogen storage alloys having improved cycle life and low temperature operating characteristics A reversible hydrogen storage alloy for electrochemical and thermal hydrogen storage having excellent kinetics and improved performance at low temperatures and excellent cycle life. The compositions of the hydrogen storage alloy is modified to achieve excellent perf... | 03/18/2008 |
| 7344676 | Hydrogen storage materials having excellent kinetics, capacity, and cycle stability A BCC phase hydrogen storage alloy capable of storing approximately 4.0 wt. % hydrogen and delivering reversibly up to 3.0 wt. % hydrogen at temperatures up to 110° C. The hydrogen storage alloys also possess excellent kinetics whereby up to 80% of the hydrogen sto... | 03/18/2008 |
| 7338632 | Hydrogen-storing alloy electrode and secondary cell using the same A secondary cell has a hydrogen-storing alloy electrode as a negative-electrode plate 26, and the electrode contains first hydrogen-storing alloy particles 36 and second hydrogen-storing alloy particles 37. The first hydrogen-storing alloy parti... | 03/04/2008 |
| 7326495 | Hydrogen storage material with high storage capacity Disclosed is a hydrogen storage material comprising a magnesium hydride. Said magnesium is stabilized in the fluorite structure. Preferably, the magnesium is at least partly substituted by an element such that the magnesium hydride is stabilized in the fluorite stru... | 02/05/2008 |
| 7314594 | Hydrogen storage alloy A hydrogen storage alloy is provided which, when used in a battery, has high drain (power) performance and charge acceptance that are excellent, and in addition, cracks are few, and cycle life performance are excellent, to be used in large batteries, in particular f... | 01/01/2008 |
| 7309547 | Hydrogen absorbing alloy, electrode thereof and nickel-metal hydride battery A hydrogen absorbing alloy containing at least a rare-earth element, magnesium (Mg), nickel (Ni) and aluminum (Al), having an intensity ratio (IA/IB) of not smaller than 0.6 (where IA represents an intensity of the highest peak in a ... | 12/18/2007 |
| 7300720 | Hydrogen absorbing alloy and secondary battery The present invention provides a hydrogen absorbing alloy containing as a principal phase at least one phase selected from the group consisting of a second phase having a rhombohedral crystal structure and a first phase having a crystal structure of a hexagonal syst... | 11/27/2007 |
| 7279222 | Solid-state hydrogen storage systems Improved hydrogen storage materials are disclosed. A first material comprises a hydrogen storage nanomaterial that contains nanoparticles or nanoparticle clusters of a metal that is capable of combining with hydrogen to form a metal hydride. The nanomaterials may be... | 10/09/2007 |
| 7259124 | Hydrogen storage composite and preparation thereof The present invention discloses a hydrogen storage medium including a composite of an alloy and a catalyst/expandable graphite. The expandable graphite can be replaced by activated carbon. The catalyst content is 1-50% based on the weight of the medium, which can be... | 08/21/2007 |
| 7223497 | Hydrogen storage alloy, process for producing hydrogen storage alloy, hydrogen storage alloy electrode, process for producing hydrogen storage alloy electrode, and battery Hydrogen storage alloy has: (1) a main composition expressed by the formula of Mm-(Ni—Al—Co—Mn—Mo); (2) a ratio of the number of atoms expressed by the formula of (Ni—Al—Co—Mn—Mo) is 5.7 | 05/29/2007 |
| 7198867 | Electrochemical generation, storage and reaction of hydrogen and oxygen An electrolytic apparatus for using catalyst-coated hollow microspheres to produce gases, store them, and to make them available for later use. The apparatus uses catalyst-coated hollow microspheres in reversible electrochemical processes and reactions, such as thos... | 04/03/2007 |
| 7166150 | Scaffolded borazane-lithium hydride hydrogen storage materials In one aspect, the invention provides a hydrogen storage composite formed of a mesoporous scaffolding material and a hydrogen storage composition comprising precursors that react to form quarternary B—H—Li—N composition. In another aspect, the invention provid... | 01/23/2007 |
| 7108757 | Hydrogen storage alloys providing for the reversible storage of hydrogen at low temperatures A reversible hydrogen storage alloy capable of storing large amounts of hydrogen and delivering reversibly large amounts of hydrogen at temperatures ranging from 0° C. up to 40° C. The hydrogen storage alloy is generally composed of titanium, vanadium, and chromiu... | 09/19/2006 |
| 7094276 | Hydrogen storage material and hydrogen storage apparatus The present invention involves a carbon-based hydrogen storage material which includes a carbon material, exhibiting a specific surface area, being 1,000 m2/g or more, and a bulk density, being from 0.4 g/cm3 or more to 1 g/cm3 or le... | 08/22/2006 |
| 7078126 | Method for production of hydrogen storage alloy for use in alkaline storage batteries A method of producing a hydrogen storage alloy, for use in alkaline storage batteries, includes two steps. A first step involves preparing alloy particles having a CaCu5-type crystal structure and the compositional formula MmNixCoyMn... | 07/18/2006 |
| 7060120 | Hydrogen absorbing alloy powder and hydrogen storing tank for mounting in a vehicle To produce a hydrogen absorbing alloy powder which is an aggregate of alloy particles each including a metal matrix and added-components, an aggregate of metal matrix particles and an aggregate of added-component particles are used, and mechanical alloying is carrie... | 06/13/2006 |
| 7014953 | Regenerative bipolar fuel cell The present invention discloses a fuel cell, which incorporates a bipolar plate. The regenerative bipolar fuel cell of the present invention contains at least one hydrogen electrode in contact with a hydrogen stream and at least one oxygen electrode in contact with ... | 03/21/2006 |
| 7011768 | Methods for hydrogen storage using doped alanate compositions The present invention concerns compositions, apparatus and methods for hydrogen storage. In certain embodiments, the compositions comprise sodium alanate and {n5-C5H5}2TiH2. In preferred embodiments, the compone... | 03/14/2006 |
| 7005212 | Hydrogen absorbing alloy and secondary battery The present invention provides a hydrogen absorbing alloy containing as a principal phase at least one phase selected from the group consisting of a second phase having a rhombohedral crystal structure and a first phase having a crystal structure of a hexagonal syst... | 02/28/2006 |
| 6942947 | Hydrogen storage alloy, process for producing hydrogen storage alloy, hydrogen storage alloy electrode, process for producing hydrogen storage alloy electrode, and battery Hydrogen storage alloy has: (1) a main composition expressed by the formula of Mm−(Ni−Al−Co−Mn−Cu); (2) a ratio of the number of atoms expressed by the formula (Ni−Al−Co−Mn−Cu) is 5.5 | 09/13/2005 |
| 6926998 | Nickel-metal hydride storage battery A nickel-metal hydride storage battery comprising a positive electrode containing nickel hydroxide, a negative electrode containing a hydrogen absorbing alloy and an alkaline electrolyte, wherein the positive electrode contains a hydroxide and/or an oxide of an elem... | 08/09/2005 |
| 6909009 | Alkane and alkane group dehydrogenation with organometallic catalysts Novel polynuclear organometallic complexes useful as catalysts for the reversible deshydrogenation of alkanes and alkane group are disclosed. The novel compounds comprise a first transition, a second transition metal p-bonded to an ?5-aromatic ligand, and a pincer l... | 06/21/2005 |
| 6905794 | Air-hydrogen battery An air-hydrogen battery with high energy density and satisfactory cycle characteristics is provided. The air-hydrogen battery includes: a positive electrode made of an air electrode; a negative electrode provided with a hydrogen-absorbing alloy; and a cation-... | 06/14/2005 |
| 6875536 | Catalytic hydrogen storage composite material and fuel cell employing same A composite hydrogen storage material including 1) an active material having hydrogen storage capacity; and 2) a catalytic material having greater catalytic activity toward the dissociation of molecular hydrogen and/or oxidation of hydrogen than that of said active ... | 04/05/2005 |
| 6852447 | Metal hydride alkaline storage cell and manufacturing method thereof A metal hydride alkaline storage cell of the present invention comprises a positive electrode, a separator impregnated with an electrolyte, and a negative electrode comprising hydrogen-absorbing alloy powder. On the surface of the hydrogen-absorbing alloy powder, th... | 02/08/2005 |
| 6835490 | Alloy for hydrogen storage, method for absorption and release of hydrogen using the alloy, and hydrogen fuel cell using the method A method for absorbing and releasing hydrogen comprises applying repeatedly hydrogen pressurization and depressurization to a hydrogen storage metal alloy of a body-centered cubic structure-type phase exerting a two-stage or inclined plateau characteristic in a hydr... | 12/28/2004 |
| 6830725 | Hydrogen storage alloys having a high porosity surface layer Electrochemical and thermal hydrogen storage alloy compositions that provide superior performance, including an electrochemical hydrogen storage alloy that provides superior low temperature discharge characteristics. The alloy compositions include microstructures in... | 12/14/2004 |
| 6824592 | Apparatus for hydrogen separation/purification using rapidly cycled thermal swing sorption The present invention provides apparatus and methods for separating hydrogen. In preferred embodiments, the apparatus and methods utilize microchannel devices with small distances for heat and mass transfer to achieve rapid cycle times and surprisingly large volumes... | 11/30/2004 |
| 6821676 | Metal hydride battery material with high storage capacity A hydrogen storage material has a magnesium-containing intermetallic compound which can form a hydride with hydrogen. The intermetallic compound has an alloy of magnesium and a trivalent metal selected from the group of Sc, Y, La and the rare earth elements. The hyd... | 11/23/2004 |
| 6790558 | Electrode alloy powder and method of producing the same A method of producing an electrode alloy powder is disclosed, wherein, to provide an electrode alloy powder capable of yielding an alkaline storage battery excellent in high-rate discharge property, self-discharge property and cycle life, a first step of immersing a... | 09/14/2004 |
| 6787103 | Hydrogen storage alloy having laves phase and production method therefor The present invention is to obtain a Ti—Zn—Mn—V—Fe based hydrogen storage alloy having the excellent hydrogen absorbing and discharging performance at a low cost. An alloy represented by the general formula: Ti1−xZrxMnw−y−z | 09/07/2004 |
| 6759165 | Hydrogen-absorbing alloy, method of surface modification of the alloy, negative electrode for battery and alkaline secondary battery A hydrogen-absorbing alloy which is excellent in stability in an aqueous solution and in mechanical pulverizability is disclosed. This hydrogen-absorbing alloy contains an alloy represented by the following general formula (I): Mg2M1y... | 07/06/2004 |
| 6746645 | High storage capacity, fast kinetics, long cycle-life, hydrogen storage alloys Hydrogen propelled vehicles and fundamentally new magnesium-based hydrogen storage alloy materials which for the first time make it feasible and practical to use solid state storage and delivery of hydrogen to power internal combustion engine or fuel cell vehicles. ... | 06/08/2004 |
| 6740450 | Hydrogen-absorbing alloy for battery, method for producing the same, and alkaline storage battery using the same An alkaline storage battery which is excellent in charge and discharge cycle life characteristics and high-rate discharge characteristics is provided by constructing it using an electrode made of an MmNi type hydrogen-absorbing alloy powders having modified surface.... | 05/25/2004 |
