Abstract: Electrode materials such as LixMnO2 where 0.2<x?2 compounds for use with rechargeable lithium ion batteries can be formed by mixing LiMn2O4 compounds or manganese dioxide compounds with lithium metal or stabilized and non-stabilized lithium metal powders.

Abstract: A fuel cell system is disclosed that comprises a fuel cell unit operable to store at least one of water and hydrogen. At least one membrane is provided at one or more ends of the fuel cell unit. The membrane is operable to enable a flow of oxygen through the at least a portion of fuel cell unit. Further, the membrane is further operable to prevent water from flowing through at least a portion of the fuel cell. Moreover, an electrical source in operative engagement with the fuel cell unit. The fuel cell operates in a first mode to collect the hydrogen when receiving voltage from the electrical source, and further the fuel cell operates in a second mode to generate electricity using the hydrogen. The fuel cell unit is preferably stackable via a combination of conductible studs and receptacles.

Abstract: A cell block including a metal case including a plurality of pipe-shaped members and a plurality of single cells housed in each of the pipe-shaped members. Each of the pipe-shaped members is joined at joining surfaces, and the pipe-shaped members are joined and integrated. A member for housing single cells is provided, and the housing member is molded with a high degree of accuracy and is capable of being manufactured at low cost and in a simple manner.

Abstract: A solid oxide fuel cell (SOFC) includes a cathode electrode, a solid oxide electrolyte, and an anode electrode. The electrolyte and/or electrode composition includes zirconia stabilized with (i) scandia, (ii) ceria, and (iii) at least one of yttria and ytterbia. The composition does not experience a degradation of ionic conductivity of greater than 15% after 4000 hrs at a temperature of 850° C.

Abstract: A fuel cell system 100 includes: a fuel cell 1 for generating a power by causing an electrochemical reaction between an oxidant gas supplied to an oxidant electrode 34 and a fuel gas supplied to a fuel electrode 67; a fuel gas supplier HS for supplying the fuel gas to the fuel electrode 67; and a controller 40 for controlling the fuel gas supplier HS to thereby supply the fuel gas to the fuel electrode 67, the controller 40 being configured to implement a pressure change when an outlet of the fuel electrode 67 side is closed, wherein based on a first pressure change pattern for implementing the pressure change at a first pressure width ?P1, the controller 40 periodically changes a pressure of the fuel gas at the fuel electrode 67.

Abstract: The present invention provides lithium composite compound particles having good high-temperature storage property and excellent cycle characteristics as an active substance for a non-aqueous electrolyte secondary battery, and a secondary battery using the lithium composite compound particles. The Li—Ni composite oxide particles for a non-aqueous electrolyte secondary battery according to the present invention have a BET specific surface area of 0.05 to 0.8 m2/g; an atomic ratio (Ma/Ni) of a concentration of an amphoteric metal to a concentration of Ni on an outermost surface of the respective Li—Ni composite oxide particles is 2 to 6; and the concentration of the amphoteric metal on the outermost surface of the respective Li—Ni composite oxide particles is higher than a concentration of the amphoteric metal at a position spaced by 50 nm from the outermost surface toward a center of the respective Li—Ni composite oxide particles.

Abstract: A method for forming a hydrolytically-stable hydrophilic coating on a fuel cell flow field plate comprises contacting a flow field plate with a titanium oxide sol to form a titanium oxide layer disposed upon the flow field plate. The coated flow field plate is subsequently contacted with a silicon oxide sol to form a silicon oxide/titanium oxide bilayer disposed upon the flow field plate. A flow field plate formed by the method is also provided.

Abstract: An electrode structure has a layer of at least two interdigitated materials, a first material being an electrically conductive material and a second material being an ionically conductive material, the materials residing co-planarly on a membrane in fluid form, at least one of the interdigitated materials forming a feature having an aspect ratio greater than one.

Abstract: An example method of controlling fluid distribution within a fuel cell includes adjusting a flow of a reactant moving within a fuel cell to increase water within a portion of the fuel cell. Another example method of controlling fluid distribution within a fuel cell includes adjusting a flow of fuel entering a fuel cell, a velocity of air entering the fuel cell, or both, so that a first amount of water exiting the fuel cell in a fuel stream is about the same as a second amount of water exiting the fuel cell in an airstream.

Abstract: A flow battery and method of operating a flow battery. The flow battery includes a first electrode, a second electrode and a reaction zone located between the first electrode and the second electrode. The flow battery is configured with a first electrolyte flow configuration in charge mode and a second flow configuration in discharge mode. The first electrolyte flow configuration is at least partially different from the second electrolyte flow configuration.

Abstract: A solid oxide fuel cell (SOFC) includes a cathode electrode, a solid oxide electrolyte, and an anode electrode. The electrolyte and/or electrode composition includes zirconia stabilized with (i) scandia, (ii) ceria, and (iii) at least one of yttria and ytterbia. The composition does not experience a degradation of ionic conductivity of greater than 15% after 4000 hrs at a temperature of 850° C.

Abstract: Provided herein are electrochemical cell element systems. One such system includes a first electrode having a desired length and an interrupted second electrode having one or more interruptions disposed between a plurality of electrode segments. The system also includes one or more separators positioned to separate the first electrode and the interrupted second electrode. The first electrode, the interrupted second electrode, and the one or more separators are wound along the length of the cell element.

Abstract: A temperature control method and a battery system create an optimal temperature range for operating a battery. The battery cells of the battery lie in several separate modules that are integrated in a temperature control circuit. Heat is increased stepwise in a heating phase in which only one first module is heated by means of a temperature control medium, the medium being active in the temperature control circuit and being heated by means of a heating element. The heat that is generated during the operation of at least the first module is used to heat at least one further module.

Abstract: To provide a lithium secondary battery which has high capacity while maintaining excellent cycle characteristic. The lithium secondary battery cathode of the present invention includes a cathode collector formed of a conductive substance, and a cathode active material layer formed of a sintered lithium composite oxide sheet. The cathode active material layer is bonded to the cathode collector by the mediation of a conductive bonding layer. A characteristic feature of the present invention resides in that the cathode active material layer has a thickness of 30 ?m or more, a voidage of 3 to 30%, and an open pore ratio of 70% or higher.

Abstract: A fuel cell equipped with at least an air electrode side power collector layer, an air electrode catalyst layer, a polymer electrolyte membrane, a fuel electrode catalyst layer and a fuel electrode side power collector layer and provided with a porous body layer having a porous body at a liquid fuel side of the fuel electrode side power collector layer assumes a structure in which the porous body layer is provided with a gas flow velocity (superficial velocity in the layer) of 10 to 5000 cm/s at a differential pressure of 100 kPa. The porous body layer is a diffusion medium of a fuel into the fuel electrode catalyst layer and a discharge resistor of gases comprising carbon dioxide and steam which are electrode reaction products and a vapor of the liquid fuel in progress of electrode reaction. An interface of the gases and a gases layer are also provided.

Abstract: A cathode element is formed as a continuous single element with a plurality of cathode leaves connected by cathode bridges. An anode element is similarly formed as a continuous single element with a plurality of anode leaves connected by anode bridges. The cathode element and anode element can be aligned and interleaved at spaces between adjacent leaves. The resulting battery pre-stack can then be folded along its bridges in alternating directions to form a battery stack whose layers alternate between an anode and cathode, and which requires minimal components and minimal or no welds.

Abstract: A battery module includes a plurality of electrochemical cells arranged within the battery module and a thermal management system configured to provide thermal management to the plurality of electrochemical cells. The thermal management system includes a first thermal plate provided adjacent a first side of the battery module and a second thermal plate provided adjacent a second side of the battery module opposite that of the first side of the battery module. The first thermal plate includes a series of fins that extend from a surface of the first thermal plate from the first side of the battery module to the second side of the battery module. The second thermal plate comprises a series of fins that extend from a surface of the second thermal plate from the second side of the battery module to the first side of the battery module.

Abstract: An electrolyte for electrochemical device and the electrochemical device thereof. The electrolyte comprises 9.95˜19.95 wt % of a salt; 80.0˜90.0 wt % of a non-aqueous solvent; 0.05˜10.00 wt % of an additive comprising a compound represented by below formula (I) or (II): wherein X1, R1, and R4˜R10 is defined as herein. Besides, the present invention also provides a method for enhancing cycle life of electrochemical device which accomplished by adding above additive to an electrolyte of electrochemical device.

Abstract: A start-up plating process for a flow cell battery is disclosed. Upon start-up of the flow-cell stack, catalysts may have deplated from the electrodes. The catalyst is replated to the electrode by application of currents to the stack prior to circulating electrolyte fluids.

Abstract: A system and method in which a high temperature fuel cell stack exhaust stream is recycled back into the fuel inlet stream of the high temperature fuel cell stack. The recycled stream may be sent to a carbon dioxide separation device which separates carbon dioxide from the fuel exhaust stream. The carbon dioxide separation device may be a carbon dioxide trap, an electrochemical carbon dioxide separator, or a membrane separator. A water separator may be used in conjunction with the carbon dioxide separation device or used separately to continuously remove water from the recycled stream.