Abstract: An object of the present disclosure is then to provide a lithium secondary battery with a lithium metal and/or a lithium alloy as a negative electrode active material, in which the lithium secondary battery can be enhanced in capacity retention rate and reduced in resistance value. A lithium secondary battery, wherein the lithium secondary battery comprises a negative electrode current collector layer, a negative electrode active material layer, an inorganic porous layer, an electrolyte layer, a positive electrode active material layer, and a positive electrode current collector layer in the listed order, the negative electrode active material layer contains a lithium metal or a lithium alloy, and the inorganic porous layer contains a metal compound containing at least one metal element selected from calcium, barium, lanthanum, and cerium.

Abstract: An object of the present disclosure is then to provide a lithium secondary battery with a lithium metal and/or a lithium alloy as a negative electrode active material, in which the lithium secondary battery is enhanced in capacity retention rate, reduced in resistance, and suppressed in short-circuit. A lithium secondary battery, wherein the lithium secondary battery comprises a negative electrode current collector layer, a negative electrode active material layer, a protective layer, an electrolyte layer, a positive electrode active material layer, and a positive electrode current collector layer in the listed order, the negative electrode active material layer contains a lithium metal or a first lithium alloy, and the protective layer contains a second lithium alloy different from the first lithium alloy.

Abstract: The lithium-ion battery includes a cathode, an anode, and an electrolyte. The anode includes a metal anode layer. The metal anode layers include Li, a first element, and a second element. The second element is different from the first element. The first element is at least one selected from the group consisting of Mg, Ga, Ag, Au and Cd. The second element is at least one selected from the group consisting of Na, Mg, Al, Si, Ca, Sc, Ti, Mn, Zn, Ga, Ge, Sr, Rh, Y, Zr, Pd, In, Sn, Ba, Ag, Pb, Ir, Au, Pt, Bi, Sb, Cd, Nd, and Tl. The relation “M1:M2=60:40 to 98:2” is satisfied. “M1” indicates the mass of the first element included in the metal anode layer. “M2” indicates the mass of the second element included in the metal anode layer.

Abstract: A lithium secondary battery includes a positive electrode, and a negative electrode in which deposition and dissolution reactions of lithium metal occur. The negative electrode includes a negative electrode layer. The negative electrode layer contains, as a negative electrode active material, an alloy of the lithium metal and dissimilar metal. An element percentage of lithium element in the alloy is 40.00 atomic % or more and 99.97 atomic % or less when the lithium secondary battery is fully charged.

Abstract: A negative electrode for a lithium secondary battery includes a negative electrode current collector and a negative electrode layer. The negative electrode layer includes a dielectric particle and a negative electrode active material including either or both of a lithium metal and a lithium alloy.

Abstract: A lithium secondary battery includes a positive electrode, and a negative electrode in which deposition and dissolution reactions of lithium metal occur. The negative electrode includes a negative electrode layer. The negative electrode layer contains, as a negative electrode active material, an alloy of the lithium metal and dissimilar metal. An element percentage of lithium element in the alloy is 40.00 atomic % or more and 99.97 atomic % or less when the lithium secondary battery is fully charged.

Abstract: A negative electrode for a lithium secondary battery includes a negative electrode current collector and a negative electrode layer. The negative electrode layer includes a dielectric particle and a negative electrode active material including either or both of a lithium metal and a lithium alloy.

Abstract: A negative electrode of the present disclosure contains a negative electrode active material having an average particle size of 2 ?m or more and 25 ?m or less, and a proportion of secondary particles of 50%, and a tortuosity is 1 or more and 20 or less, and a migration index is 1.0 or more and 1.6 or less.

Abstract: The secondary battery current collector disclosed herein includes a resin layer, a first metal layer covering one main surface of the resin layer, and a second metal layer covering the other main surface of the resin layer. Each of the first metal layer and the second metal layer extend beyond an external side of the main surface of the resin layer. The secondary battery current collector has a resin-laminated part, in which the first metal layer, the resin layer, and the second metal layer are laminated; and a metal-laminated part, in which the first metal layer and the second metal layer are overlaid, on an external side of the resin-laminated part. A thickness of the metal-laminated part is greater than a total thickness of the first metal layer and the second metal layer in the thickest portion of the resin-laminated part.

Abstract: A lithium secondary battery includes a lithium metal and/or a lithium alloy as a negative electrode active material, in which the lithium secondary battery can be enhanced in capacity retention rate and can be suppressed in generation of dendrite lithium. A lithium secondary battery comprises a negative electrode current collector layer, a metal layer, and a negative electrode active material layer, the negative electrode active material layer contains a lithium metal or a lithium alloy, the coverage of the negative electrode current collector layer with the metal layer is 50% or more and less than 95%, and the metal layer has a first metal that is taken with lithium to form an alloy, and a second metal contained in the negative electrode current collector layer.

Abstract: A lithium secondary battery with a lithium metal and/or a lithium alloy as a negative electrode active material, in which the lithium secondary battery can be inhibited from being increased in resistance value in heat generation thereof is provided. A lithium secondary battery, wherein the lithium secondary battery comprises a negative electrode current collector layer, a metal layer, a negative electrode active material layer, an electrolyte layer, a positive electrode active material layer, and a positive electrode current collector layer in the listed order, the negative electrode active material layer contains a lithium metal or a lithium alloy, the thickness of the metal layer is 10 nm to 4000 nm, and the metal layer has a first metal that is taken with lithium to form an alloy, and a second metal contained in the negative electrode current collector layer.

Abstract: A lithium metal secondary battery with enhanced in capacity retention rate and reduced in resistance value is provided. A lithium metal secondary battery, wherein the lithium metal secondary battery comprises a negative electrode current collector layer, a metal layer, a negative electrode active material layer, an electrolyte layer, a positive electrode active material layer, and a positive electrode current collector layer in the listed order, the negative electrode active material layer contains a lithium metal and a metal particle dispersed in the lithium metal, the metal particle contains a metal element that is taken with lithium to form an alloy, and the area ratio of the metal particle is 1×10?5% to 50% in observation of a cross section of the negative electrode active material layer in a full charge state.

Abstract: An object of the present disclosure is then to provide a lithium secondary battery with a lithium alloy as a negative electrode active material, in which the lithium secondary battery is enhanced in capacity retention rate and reduced in resistance value. A lithium secondary battery, wherein the lithium secondary battery comprises a negative electrode current collector layer, a negative electrode active material layer, an electrolyte layer in the listed order, the negative electrode active material layer contains lithium, a first metal element that is taken with lithium to form an alloy, and a second metal element that is taken with lithium to form an alloy, the concentration (atomic %) of the first metal element in a surface facing the electrolyte layer is higher than the concentration (atomic %) of the first metal element in a surface facing the negative electrode current collector layer.

Abstract: Provided is a positive electrode material which can impart a secondary battery with excellent low temperature output characteristics, excellent high temperature cycle characteristics and excellent durability against high voltage. A positive electrode material of a secondary battery disclosed here includes a positive electrode active substance particle and a coating containing a titanium-containing compound at the surface of the positive electrode active substance particle. A layer having a higher Ti concentration than the Ti concentration at a depth of 500 nm from the surface is formed in a surface portion of the positive electrode active substance particle. The titanium-containing compound in the coating is at least one compound selected from the group consisting of TiO2, TinO2n?1, wherein n is an integer of 3 or more, and oxides containing Li and Ti.

Abstract: The present disclosure provides a current collector of a secondary battery in which the current inside the battery is easily blocked at the time of inside short circuit, and in which the capacity retention rate and the decreasing rate of the electric resistance are outstanding. The current collector herein disclosed includes a laminate structure in which a resin layer and a metal layers formed on the both surfaces of the resin layer are laminated. The surface of the metal layer includes a rough surface part provided with a plurality of protruding parts and a plurality of recessed parts. On the rough surface part, a resin coat layer is formed, and at least one part of the protruding part among the plurality of protruding parts includes an exposed part that is exposed from the resin coat layer.

Abstract: A method of producing a wet mixture includes a stirring and mixing process in which lithium-containing positive electrode active material particles having surplus lithium compounds on the surface and crystalline ferroelectric ceramic particles are dried, stirred and mixed to obtain a mixed powder; and a solution mixing process in which a lithium conductor forming solution is mixed with the mixed powder to obtain a wet mixture containing coated lithium-containing positive electrode active material particles having a coating which is made of an amorphous lithium conductor and in which the ferroelectric ceramic particles are dispersed on the surface of the lithium-containing positive electrode active material particles.

Abstract: A lithium secondary battery includes a positive electrode, and a negative electrode in which deposition and dissolution reactions of lithium metal occur. The negative electrode includes a negative electrode layer. The negative electrode layer contains, as a negative electrode active material, an alloy of the lithium metal and dissimilar metal. An element percentage of lithium element in the alloy is 40.00 atomic % or more and 99.97 atomic % or less when the lithium secondary battery is fully charged.

Abstract: A hydrogen permeable membrane that includes a PdCu alloy and can be used for hydrogen purification. The hydrogen permeable membrane includes 38.75 mass % or more and 39.5 mass % or less of Cu with the balance being Pd and inevitable impurities as the PdCu alloy, and the area percentage of a ? phase on an arbitrary cross section is 95% or more. The hydrogen permeable membrane of the present invention has a hydrogen permeability coefficient ? of 2.0×10?8 mol/m·S·Pa1/2 or more at any temperature in a temperature range of 150° C. or higher and 350°° C. or lower. This value exceeds the hydrogen permeability coefficient of a PdCu alloy membrane containing Cu concentration of 40 mass %, which has been thus far considered to be optimal, demonstrating that the present invention is excellent in terms of hydrogen permeability.

Abstract: A non-aqueous electrolyte secondary battery disclosed herein includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive and negative electrodes each include a current collector and a mixture layer formed on the surface of the current collector. The current collector includes a resin layer and metallic foils provided on both surfaces of the resin layer in at least one of the positive and negative electrodes. A surface of the metallic foils on which the mixture layer is formed is roughened. Furthermore, the average X (?m) of the thicknesses at the thinnest parts and the average Y (?m) of the thicknesses at the thickest parts of the metallic foil determined based on a plurality of obtained sectional SEM images in a stacked direction of the resin layer and the metallic foils satisfy the following relationship: 0.1 ?m<X<4 ?m, and 1.2?Y/X.

Abstract: A lithium metal negative electrode secondary battery comprises a positive electrode, a separator, a negative electrode, and an electrolyte solution. The electrolyte solution includes Li ions. The separator is interposed between the positive electrode and the negative electrode. The separator includes a porous base material and a covering layer. The porous base material has a first main face and a second main face. The first main face faces the positive electrode. The second main face faces the negative electrode. The covering layer covers the second main face. The covering layer includes a Li-ion conductor. The Li-ion conductor has a Li-ion conductivity from 1.0×10?13 to 2.0×10?9 S/cm.