Ovonic Battery Company, Inc.

Energy Conversion Devices, Inc.

Ovonic Hydrogen Systems LLC

Basf Corporation

Other

Texaco Ovonic Battery Systems, LLC

Texaco Ovonic Battery Company, Inc.

Ovinic Battery Company, Inc.

Univerticalcorporation

Michael A Fetcenko

Stanford R Ovshinsky

Kwo Young

Benjamin Reichman

William C Mays

Cristian Fierro

Beth Sommers

Avram Zallen

Srinivasan Venkatesan

Benjamin S Chao

Arthur Holland

Taihei Ouchi

Christian Fierro

John M Koch

Jun Su Im

Dennis A Corrigan

James L Strebe

Tim Hicks

Srini Venkatesan

Craig Harrison

Kevin Dean

Steven P Sumner

Joseph LaRocca

Rosa T Young

Krishna Sapru

Baoquan Huang

Diana F Wong

Herbert C Ovshinsky

Kuochih C Hong

Feng Li

Kozo Kajita

Donn Fillmore

Kwo-hsiung Young

Gabriel E Benet

Melanie Reinhout

Zhaosheng Tan

Merle Wolff

Tiejun Meng

Peter H Benson

Franklin J Martin

Charles T Walker

Kenneth Jeffries

Mark A Nuss

Andrea L Lijoi

Thomas Kaatz

Subnash Dhar

Paul R Gifford

Clifford Bennett

Sharon Stahl

Ben Chao

Peter Benson

Hydrogen storage negative electrodes based on group IV elements, for example hydrogen storage negative electrodes based on silicon and/or carbon, are highly effective towards reversibly charging/discharging hydrogen in an hydride electrochemical cell.

Electrochemical hydrogen storage electrodes and cells

Hydrogen storage alloys comprising a metal oxide containing &#x2265;60 at % oxygen; and/or comprising a metal region adjacent to a boundary region, which boundary region comprises at least one channel; and/or comprising a metal region adjacent to a boundary region, where the boundary region has a length and an average width, where the average width is from about 12 nm to about 1100 nm; and/or comprising a metal oxide zone comprising a metal oxide, which oxide zone is aligned with at least one channel; and/or comprising a Ni/Cr metal oxide have improved electrochemical properties, for instance improved low temperature electrochemical performance.

Hydrogen storage alloys

The performance of an ABtype metal hydride alloy is improved by adding an element to the alloy which element is operative to enhance the surface area morphology of the alloy. The alloy may include surface regions of differing morphologies.

Nanoscale nickel-based catalytic material

A multi-phase metal hydride alloy material which is capable of reversibly absorbing and desorbing hydrogen includes a first main phase or group of phases having an ABtype crystalline structure and a second phase which has a concentration of a modifier element therein which is greater than the concentration of the modifier element in the first phase or group of phases. The modifier element functions to promote the formation of the second phase and may comprise a light rare earth element such as yttrium. The first phase or group of phases may incorporate one or more Laves phases such as a C14, C15, and/or C36 phase. Further disclosed are metal hydride batteries including the alloys.

Metal hydride alloys having improved activation and high rate performance

A solid state battery including at least one multilayered battery cell comprising: 1) a layer of negative electrode material; 2) a layer of positive electrode material; and 3) a layer of perovskite-type oxide material disposed between the layer of positive electrode material and the layer of negative electrode material, where said layer of perovskite-type oxide material is electrically insulating and capable of readily conducting or transporting protons.

Low cost, high power, high energy density, solid-state, bipolar metal hydride batteries

A hydrogen storage alloy having the atomic formula AB4.75-5.25. Where A may comprise at least 85 atomic percent Nd and less than 15 atomic percent other rare earth elements and Mg and B may comprise Ni, Co, and at least one element selected from the group consisting of Mn and Al. The atomic percentages of Mn and Al may be governed by the following formulas where Mn and Al are in atomic percent: 1) Mn+1.5 Al&#x2267;6 atomic percent; and 2) Mn+Al&#x2266;12 atomic percent. The total percent of Mn and Al may provide the alloy with a 20&#xb0; C. plateau pressure of between 4 and 25 psi, preferably between 6 and 20 psi. The hydrogen storage alloy allows a nickel metal hydride battery into which it is incorporated to maintain a voltage of at least 1.2 V at a depth of discharge of 90%.

NdNi5 alloys for hydrogen storage and Ni-MH batteries

Metal hydride alloy with catalyst particles and channels

A method for converting nickel into a nickel salt solution. Nickel is dissolved and reacted in an oxygen-enriched acidic solution to produce a nickel salt solution as illustrated in the following chemical equation, wherein X is a conjugate base:Ni+HX+&#xbd;O-&#x3e;NiX+HO.

Method of producing a nickel salt solution

A low temperature alkaline fuel cell having a hydrogen electrode and an oxygen electrode, both of which are comprised of high performance non-precious metal catalytic materials providing high performance at low temperatures.

Low temperature alkaline fuel cell

A system for the solid state storage of hydrogen in accordance with several exemplary embodiments is disclosed herein. The system includes a plurality of hydrogen storage containers. Each hydrogen storage container of the plurality of hydrogen storage containers has an inner chamber and an inlet. The inlet provides a pathway for introducing hydrogen gas into the inner chamber. The inner chamber having a solid hydrogen storage medium disposed therein. The system further includes an endplate manifold having a hydrogen receiving port, a plurality of hydrogen outlet ports, and a flow channel. The hydrogen flow channel is integrated into the endplate manifold. Each hydrogen outlet port is in fluid communication with the inlet of one of the plurality of hydrogen storage containers. The hydrogen flow channel provides fluid communication between the hydrogen receiving port and each hydrogen outlet port.

Hydrogen storage system

A fuel cell. The anode of the fuel cell comprises a hydrogen oxidation catalyst comprising a finely divided metal alloy particulate. The metal alloy particulate has an average particle size of less than about 100 Angstroms.

Fuel cell

A method of making a catalyst. The method comprises the step of leaching a portion of the bulk of an alloy. The alloy may be a hydrogen storage alloy.

Method of making a catalyst

A hydrogen storage battery with improved cycle life and a method for making the same. The battery has a negative electrode with an electrochemically active negative material and a negative electrode capacity and a positive electrode electrochemically coupled with the negative electrode, the positive electrode having a positive electrode capacity and an electrochemically active positive material with a precharge. Also described herein is a positive electrode material for a hydrogen storage battery and a method for making the same. The positive electrode material includes a preoxidized positive active material which is partially non-oxidized. The preoxidized positive material may be used to provide precharge to the positive electrode of a hydrogen storage battery to aid in cell balancing.

Hydrogen storage battery; positive nickel electrode; positive electrode active material and methods for making

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 ABtype alloys that include a cycle life enhancement element and a low Co concentration. The preferred cycle life enhancement elements include Zr and Si. The cycle life enhancement elements increase the cycle life of the instant alloys by reducing the pulverization of alloy particles upon repeated cycles of charging-discharging or hydriding-dehydriding. The alloys are characterized by low hysteresis on cycling, where hysteresis is measured in terms of mass concentration difference, a parameter related to the activation energy associated with the incorporation of hydrogen into the alloy. The instant alloys are designed to have a low activation energy for hydrogen incorporation and as a result, provide low hysteresis and a more uniform concentration of absorbed hydrogen within the material. As a result, differential lattice expansion effects associated with the absorption of hydrogen are minimized and the tendency for particle pulverization on cycling is minimized. Alloys having a low Co concentration and long cycle life are thus provided for.

Hydrogen storage alloys having improved cycle life and low temperature operating characteristics

A preferred embodiment of the present invention provides a process for making nickel sulfate by converting nickel metal into nickel sulfate, which may be converted to nickel hydroxide. Nickel metal is dissolved in sulfuric acid and oxygen containing gas is introduced to produce a nickel sulfate solution having nickel sulfate and water as illustrated in the following chemical equation.Ni+HSO+&#xbd;O&#x2192;NiSO+HOThe nickel sulfate is filtered and sulfuric acid is continually added to maintain stoichiometry within a reactor until the nickel metal is dissolved. The sulfuric acid, oxygen containing gas and nickel metal may be heated to facilitate the desired reaction. Then, the nickel sulfate may be utilized to produce nickel hydroxide.

Process for converting nickel to nickel sulfate

Growing community of inventors

Rochester, MI, United States of America

Michael A Fetcenko