Abstract: A process to prepare an electrode for an electrochemical storage device by spraying an aqueous slurry composition comprising water, xanthan gum, a source of conducting carbon particles and an active material on an electrode base. The slurry may be made by first mixing solid xanthan gum with the conducting carbon particles and the active material and secondly adding water to the resulting mixture. Alternatively the slurry is obtained by mixing solid xanthan gum with a carbon-based active material and adding water to the resulting mixture obtained.

Abstract: The present invention relates to a lithium secondary battery, comprising: a negative electrode comprising a negative electrode active material layer comprising a soft carbon negative electrode active material and a byproduct having an average particle size (D50) of 10 to 70 nm; a positive electrode comprising a positive electrode active material; and an electrolyte.

Abstract: A positive electrode of a lithium-sulfur battery including maghemite as an additive and a lithium-sulfur battery including the same. The maghemite obtained by heat treatment of lepidocrocite adsorbs lithium polysulfide (LiPS) generated from a lithium-sulfur battery, thereby improving the charging/discharging efficiency and capacity of the battery, as well as increasing the life of the battery.

Abstract: A testing device for tubular solid oxide fuel cells (SOFC) includes a housing within which the tubular SOFC is mounted. The housing includes suitable inlets and outlets to allow a fuel gas, such as hydrogen, and an oxidant, such as air or oxygen, to interact with the anode and cathode of the tubular SOFC. In addition, the housing is formed of suitable material for placement in a heating device, such as a tubular furnace or a miniature tubular heater. A temperature sensor and computing device may monitor the temperature of the tubular SOFC in order to control the operation of the tubular heating device. In addition, the device provides electrical current collectors for coupling to the anode and cathode of the SOFC, which may be removable and reusable.

Abstract: A method of producing a positive-electrode active material for a non-aqueous electrolyte secondary battery is provided. The method includes obtaining a precipitate containing nickel and manganese from a solution containing nickel and manganese, heat-treating the resulting precipitate at a temperature of from 850° C. to less than 1100° C. to obtain a first heat-treated product, mixing the first heat-treated product and a lithium compound, and heat-treating the resulting lithium-containing mixture at a temperature of from 550° C. to 1000° C. to obtain a second heat-treated product. The second heat-treated product contains a group of lithium transition metal composite oxide particles having an average particle diameter DSEM of from 0.5 ?m to less than 3 ?m and D50/DSEM of 1 to 2.5. The lithium transition metal composite oxide particles have a spinel structure based on nickel and manganese.

Abstract: A method for patterning a lithium metal surface, including the steps of (S1) forming an intaglio or relief pattern having a predetermined size on a patterning substrate; (S2) either (a) compressing lithium metal physically to a surface of the patterning substrate having the pattern formed thereon to form the predetermined pattern on the surface of the lithium metal, or (b) applying liquid lithium to the surface of the patterning substrate having the pattern formed thereon and solidifying the liquid lithium to form the predetermined pattern on the surface of the lithium metal; and (S3) separating the lithium metal having the predetermined pattern formed thereon from the patterning substrate, wherein the patterning substrate is at least one selected from a silicon wafer or polycarbonate substrate.

Abstract: An electrochemical reaction cell stack including a plurality of unit cells and flat plate-shaped electrically conductive members arranged in a first direction. The electrically conductive members include: a first member having a first surface including a first flat portion and a protruding portion and a second member both located on the first side of the first member in the first direction, the second member having a second surface facing the first surface and including a second flat portion and a recessed portion facing the protruding portion. The thickness of the second member is larger than the thickness of the first member in the first direction. The depth of the recessed portion of the second member from the second flat portion is larger than the protruding length of the protruding portion of the first member from the first flat portion in the first direction.

Abstract: A positive electrode of a lithium-sulfur battery including maghemite as an additive and a lithium-sulfur battery including the same. The maghemite obtained by heat treatment of lepidocrocite adsorbs lithium polysulfide (LiPS) generated from a lithium-sulfur battery, thereby improving the charging/discharging efficiency and capacity of the battery, as well as increasing the life of the battery.

Abstract: Disclosed are a catalyst layer for a fuel cell, including a carbon carrier having pores, a catalyst metal carried on the carbon carrier, and an ionomer covering the carbon carrier, wherein the crystal length of the carbon carrier is not less than 6 nm, and the coverage of the catalyst metal by the ionomer is 55% to 65%, and a method for the production of a catalyst layer for a fuel cell, including heat-treating a carbon carrier having pores, heat-treating the heat-treated carbon carrier under an oxygen atmosphere to activate the carbon carrier, allowing the activated carbon carrier to carry a catalyst metal, mixing the carbon carrier carrying the catalyst metal and an ionomer to cover the carbon carrier with the ionomer, and forming the catalyst layer for a fuel cell using the carbon carrier covered with the ionomer.

Abstract: A nickel-hydrogen secondary battery includes an electrode group comprising a separator, a positive electrode, and a negative electrode, and the positive electrode contains a positive electrode active material including a base particle comprising a nickel hydroxide particle containing Mn in solid solution and a conductive layer comprising a Co compound and covering the surface of the base particle, wherein the X-ray absorption edge energy of Mn detected within 6500 to 6600 eV by measurement with an XAFS method is 6548 eV or higher.

Abstract: A method for producing a lithium metal negative electrode structure including the steps of: (a) forming a lithium metal layer on a portion of one side or both sides of a current collector, wherein a non-coated portion of the current collector, on which a tab will be formed, is included on one side of the current collector, and wherein a stepped part is present between the non-coated portion of the current collector and the coated portion of the lithium metal layer; (b) coating and curing a photocurable material, or attaching an insulating tape, onto the stepped part between the non-coated portion of the current collector and the coated portion of the lithium metal layer; and (c) punching the result of step (b) into a unit electrode to produce the lithium metal negative electrode structure.

Abstract: Ceramic-polymer film includes a polymer matrix, plasticizers, a lithium salt, and a ceramic nanoparticle, LLZO: AlxLi7-xLa3Zr1.75Ta0.25O12 where x ranges from 0 to 0.85. The nanoparticles have diameters that range from 20 to 2000 nm and the film has an ionic conductivity of greater than 1×10?4 S/cm (?20° C. to 10° C.) and larger than 1×10?3 S/cm (?20° C.). Using a combination of selected plasticizers to tune the ionic transport temperature dependence enables the battery based on the ceramic-polymer film to be operable in a wide temperature window (?40° C. to 90° C.). Large size nanocomposite film (area ?8 cm×6 cm) can be formed on a substrate and the concentration of LLZO nanoparticles decreases in the direction of the substrate to form a concentration gradient over the thickness of the film. This large size film can be employed as a non-flammable, solid-state electrolyte for lithium electrochemical pouch cell and further assembled into battery packs.

Abstract: A manufacturing method of a proton battery and a proton battery module are provided. The manufacturing method of the proton battery includes the steps of providing a positive electrode, a negative electrode, and a polymer exchange membrane, and assembling the positive electrode, the negative electrode, and the polymer exchange membrane, in which the polymer exchange membrane is interposed between the positive electrode and the negative electrode. The step of providing the negative electrode at least includes forming a carbon layer on a substrate, and performing a polarization process on the carbon layer.

Abstract: Systems and methods drawn to an electrochemical cell comprising a low temperature ionic liquid comprising positive ions and negative ions and a performance enhancing additive added to the low temperature ionic liquid. The additive dissolves in the ionic liquid to form cations, which are coordinated with one or more negative ions forming ion complexes. The electrochemical cell also includes an air electrode configured to absorb and reduce oxygen. The ion complexes improve oxygen reduction thermodynamics and/or kinetics relative to the ionic liquid without the additive.

Abstract: The present invention relates to an electrode plate, an electrochemical device and a safety coating. The electrode plate comprises a current collector, an electrode active material layer and a safety coating disposed between the current collector and the electrode active material layer, the safety coating layer comprising a fluorinated polyolefin and/or chlorinated polyolefin polymer matrix, a conductive material and an inorganic filler. The electrode plate can quickly open the circuit when the electrochemical device (for example, a capacitor, a primary battery, or a secondary battery) is in a high temperature condition or an internal short circuit occurs, and thus it may improve the high temperature safety performance of the electrochemical device.

Abstract: The present development is a process for the preparation of nanowire synthesis, coatings and uses thereof. Lithium titanate (LTO) nanowires are synthesized using a continuous hydrocarbon/plasma flame process technology combined with the dry impregnation method. The resulting LTO nanowires can be used as electro active anode materials for lithium ion batteries. The coating parameters, such as thickness, porosity of the film, packing density, and viscosity are controlled using the length of the nanowires, calendaring pressure, and slurry composition.

Abstract: The present disclosure relates to the field of battery and, in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector of the present disclosure includes an insulation layer and a conductive layer. The insulation layer is used to support the conductive layer. The conductive layer is used to support an electrode active material layer and is located on at least one surface of the insulation layer. The insulation layer has a density smaller than that of the conductive layer. The insulation layer has a thickness of D1 satisfying 1 ?m?D1?10 ?m. The conductive layer has a thickness of D2 satisfying 200 nm?D2?1.5 ?m. The insulation layer has a tensile strength greater than or equal to 150 MPa.

Abstract: Provided is an energy storage system for a marine vessel. The energy storage system includes a battery pack and a storage container (i) configured for housing the battery pack and other components and (ii) including an electrical interface for electrically coupling the battery pack to the vessel. The energy storage system also includes an air blast cooling system (i) mountable to a first section of the container and (ii) for cooling the battery pack and an air conditioning system configured for cooling the other components.

Abstract: A lithium secondary battery includes a cathode, an anode and a non-aqueous electrolyte. The anode includes an anode active material which contains a mixture of an artificial graphite and a natural graphite. A sphericity of the natural graphite is 0.96 or more. The lithium secondary battery including the anode has improved life-span and power properties.

Abstract: An electrolyte composition can be capable of becoming molten when heated sufficiently. The electrolyte can include at least one lithium halide salt; and at least one lithium non-halide salt combined with the at least one lithium halide salt so as to form an electrolyte composition capable of becoming molten when above a melting point about 350° C. A lithium halide salt includes a halide selected from F and Cl. A first lithium non-halide salt can be selected from the group consisting of LiVO3, Li2SO4, LiNO3, and Li2MoO4. A thermal battery can include the electrolyte composition, such as in the cathode, anode, and/or separator region therebetween. The battery can discharge electricity by having the electrolyte composition at a temperature so as to be a molten electrolyte.