Abstract: A secondary battery includes a battery electrode assembly in which positive electrode 1 and negative electrode 6 are stacked alternately with separator 20 interposed therebetween. Positive electrode 1 and negative electrode 6 each have current collector 3, 8 and active material 2, 7. Each surface of current collectors 3, 8 has a coated portion and an uncoated portion of active materials 2, 8. Active material 2, 7 has inclined portions 2a, 7a having decreasing thickness. Insulators 40 are arranged to cover boundaries 4a between the coated portion and the uncoated portion of positive electrode 1. One or both of insulators 40 on both surfaces of positive electrode current collector 3 have one end 40a which is located on inclined surface 2a and which is opposite to inclined portion 7a of one or both of active materials 7 on both surfaces of negative electrode current collector 3, and have other end 40b which is located on uncoated portion of positive electrode 1.

Abstract: Provided is electrically conductive ink that shows favorable flowability and that can also suppress deformation, such as flattening, upon application of surface pressure. The electrically conductive ink is applied onto a substrate 21 of a separator 11 that constitutes a cell 13 of a fuel cell stack by way of screen printing so as to form ribs 22 on the substrate 21, wherein the electrically conductive ink has viscoelasticity, as measured by a rotary rheometer, that exhibits a loss tangent of 1 with a strain of 10 to 100%.

Abstract: Provided is a highly reliable nickel-zinc battery including a separator exhibiting hydroxide ion conductivity and water impermeability. The nickel-zinc battery includes a positive electrode containing nickel hydroxide and/or nickel oxyhydroxide; a positive-electrode electrolytic solution in which the positive electrode is immersed, the electrolytic solution containing an alkali metal hydroxide; a negative electrode containing zinc and/or zinc oxide; a negative-electrode electrolytic solution in which the negative electrode is immersed, the electrolytic solution containing an alkali metal hydroxide; a hermetic container accommodating the positive electrode, the positive-electrode electrolytic solution, the negative electrode, and the negative-electrode electrolytic solution; and the separator exhibiting hydroxide ion conductivity and water impermeability and disposed in the hermetic container so as to separate a positive-electrode chamber from a negative-electrode chamber.

Abstract: Provided is an anode for a lithium secondary battery composed of a multi-layered structure including an electrode current collector, a first anode active material layer including a first anode active material formed on the electrode current collector, and a second anode active material layer including a second anode active material having relatively lower press density and relatively larger average particle diameter than the first anode active material. Since an anode according to an embodiment of the present invention may include a multi-layered active material layer including two kinds of anode active materials having different press densities and average particle diameters on an electrode current collector, porosity of the surface of the electrode may be improved even after a press process to improve ion mobility into the electrode. Thus, charge characteristics and cycle life of a lithium secondary battery may be improved.

Abstract: A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li1+aNibMncCodTieMfO2+?, and has an atomic ratio Ti3+/Ti4+ between Ti3+ and Ti4+, as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and ? are numbers satisfying ?0.1?a?0.2, 0.7<b?0.9, 0?c<0.3, 0?d<0.3, 0<e?0.25, 0?f<0.3, b+c+d+e+f=1, and ?0.2???0.2.

Abstract: A bipolar plate, including conductive sheets, and in which flow channels are made between the conductive sheets and are in communication with a coolant inlet and outlet manifolds. An outer face of a conductive sheet includes first ribs delimiting reactant flow channels, and a second rib extending on the side of the reactant flow channels. A sealing gasket extends at least partially on the second rib. The outer face of the conductive sheet further includes third ribs extending between a first rib and the second rib, between which an alternation of third ribs and of indentation is formed. The sheets are in contact at the level of indentations, and respective passages are formed under the third ribs.

Abstract: An electrolyte, an electrolyte solvent, and an electrolyte additive, in particular for a lithium cell, include at least one ether. The at least one ether has at least one of the general chemical formula: R11R12R13C—(CR14R15)x1-[O—(CR31R32)a-(CR33R34)b]c-O—(CR24R25)x2-CR21R22R23 and of the general chemical formula: R41R42R43C—(CR44R45)y1-O—(CR54R55)y2-CR51R52R53.

Abstract: An electrochemical cell includes a membrane electrode assembly and a bipolar plate. The membrane electrode assembly includes a proton exchange membrane and first and second electrodes. The bipolar plate includes conductive sheets, coolant flow channels are made between the conductive sheets. An outer face of a conductive sheet includes reactant flow channels and a first rib extending on the side of the reactant flow channels. A gasket extends on the first rib. The bipolar plate includes an intermediate zone extending between the first rib and the first electrode, a first band in which the sheets have complementary shapes nested one in the other over the entire length of a coolant flow channel, and a second band in which a sheet includes reliefs in contact with the membrane electrode assembly.

Abstract: To provide a power storage unit having a structure which is unlikely to break down by change in shape, such as bending. An electrode plate is covered with a sheet of an insulator which is folded in two. The sheet is preferably processed into a bag-like shape or an envelope-like shape by bonding overlapping portions of the sheet in the periphery of the electrode plate. The electrode plate and the sheet are fixed to an exterior body. In the case where the shape of the exterior body is changed by bending or the like, the electrode plate and the sheet can slide together in the exterior body. Thus, stress on the electrode plate due to bending can be relieved.

Abstract: A battery is provided which includes: a first electrode body which is a porous body having voids and which is formed by connecting first electrode active material grains containing a first electrode active material to each other; a first cover layer which covers a surface of the first electrode body and which contains a solid electrolyte; and a second cover layer which covers a surface of the first cover layer and which contains a second electrode active material. In the battery described above, a space presents at the position of the void of the first electrode body covered with the first cover layer and the second cover layer.

Abstract: Provided is a redox catalyst wherein a catalytically active component is supported on carbon nanotubes whose average diameter (Av) and standard deviation (?) of diameters satisfy the condition 0.60>3?/Av>0.20, and at least a part of a surface of the carbon nanotubes, including a part on which the catalytically active component is supported, is covered with porous inorganic material.

Abstract: A nickel-hydrogen secondary battery includes an electrode group including a separator, a positive electrode and a negative electrode, the positive electrode includes a positive electrode active material, the positive electrode active material includes a composite particle including a compound of Co and a compound of Ni, and the ratio R represented by A/B satisfies a relationship of R?0.3, when the amount of jumping in the X-ray absorption fine structure spectrum of the Co in 7600 to 7800 eV and the amount of jumping in the X-ray absorption fine structure spectrum of the Ni in 8300 to 8500 eV obtained by measurement according to a conversion electron yield method are defined as A and B, respectively.

Abstract: Methods for making a negative electrode material for use in an electrochemical cell, like a lithium ion battery, are provided. The electroactive material includes a functionalized surface having a grafted reactive group (e.g., an amino group, a carboxyl group, an anhydride group, and the like). The electrically conductive material includes a functionalized surface having a grafted reactive group (e.g., an amino group, a carboxyl group, and the like). The functionalized electroactive material and the functionalized electrically conductive material is admixed and reacted with at least one binder precursor having a reactive group (e.g., an amino group, an anhydride group, and the like). A porous solid electrode material is thus formed. Negative electrodes are also provided, which provide significant performance benefits and reduce the issues associated with capacity fade, diminished electrochemical cell performance, cracking, and short lifespan associated with conventional silicon anode materials.

Abstract: A resin film, which is adapted for use in a packaging material for secondary cell having a sealant layer formed of a polyolefin resin and is disposed between the sealant layer and leads, respectively, connected to a positive electrode and a negative electrode, includes a first layer at a position close to the leads and a second layer disposed at a position close to the sealant layer, a heat quantity of the second layer, measured according to JIS K 7122, being larger than a heat quantity of fusion of the first layer.

Abstract: Provided is a battery in which collector foil is unlikely to break. In a lithium-ion secondary battery, as for a distance from a connection section between a positive electrode tab and the positive electrode terminal to a boundary section between applying and non-applying sections of positive-electrode active material in a direction perpendicular to a stacking direction, compared with a reference positive electrode having the boundary section that is located farthest to the connection section by straight-line distance, a layer of a positive electrode that is stacked in such a way as to be farthest from the reference positive electrode has a smaller distance from a boundary of the applying and non-applying sections of the positive-electrode active material to a connection section with the positive electrode tab in a direction perpendicular to a stacking direction.

Abstract: Provided are an electrolyte for a lithium secondary battery and a lithium secondary battery containing the same. The electrolyte for a secondary battery according to the present invention has excellent high-temperature stability, excellent low-temperature discharge capacity, and excellent life cycle characteristics.

Abstract: The present application relates to a secondary battery head cover assembly, a secondary battery including the same and an assembling method thereof. The secondary battery head cover assembly includes a head cover and an insulation structure, the insulation structure includes a top connection sheet and two naked battery core insulation sheets, an electrode pole is provided on the head cover, and an electrode pole through hole, through which the electrode pole passes, is provided at a position on the top connection sheet corresponding to the electrode pole, the top connection sheet is located below the head cover and is fixed to the head cover. The secondary battery includes the secondary battery head cover assembly and the naked battery core, the naked battery core is located below the top connection sheet, and the two naked battery core insulation sheets wrap the side and bottom surfaces of the naked battery core.

Abstract: Provided is a highly reliable nickel-zinc battery including a separator exhibiting hydroxide ion conductivity and water impermeability.

Abstract: A battery pack for a vehicle is presented. The battery pack comprises a plurality of bricks, each brick of the plurality of bricks comprising a phase change material block, a side of the phase change material block defining a plurality of channels, and a plurality of battery cells, each battery cell being disposed at least in part in the phase change material block; and at least one connector for electrically connecting a first one of the plurality of bricks to a second one of the plurality of bricks, the at least one connector being disposed at least partially in one of the plurality of channels.

Abstract: The main object of the present disclosure is to provide a composite active material with a capability of improving a battery output. The present disclosure achieves the object by providing a composite active material comprising: an oxide active material, an oxide solid electrolyte layer that coats a surface of the oxide active material, and a sulfide solid electrolyte layer that coats a surface of the oxide solid electrolyte layer; wherein the sulfide solid electrolyte layer has a specific surface area in a range of 1.06 m2/g to 1.22 m2/g, and a thickness the sulfide solid electrolyte layer is in a range of 15 nm to 25 nm.