Abstract: The present disclosure relates to an oxide-based solid electrolyte for low-temperature sintering process and a method of manufacturing the same, and more particularly to a low-temperature sintering process having no problem of side reaction between a positive electrode active material and an oxide-based solid electrolyte through use of a low-melting point dissimilar oxide and a method of manufacturing an all-solid-state battery including a positive electrode manufactured thereby.

Abstract: Provided is a lithium secondary battery separator including a laminate of a substrate and a porous heat-resistant polyimide film which covers at least one surface of the substrate. The porous heat-resistant polyimide film has pores which are regularly arrayed three-dimensionally and a film thickness of 5-20 ?m. Penetration damage to the separator by growth of dendrite-shaped lithium is avoided, and it is also possible to meet a request which is demanded of the lithium secondary battery separator.

Abstract: To provide: an electrolyte film having a practical film thickness, an excellent mechanical strength, and electrochemical characteristics; an electrolyte composition making it possible to obtain the electrolyte film; and a cell in which the electrolyte film is used. [Solution] An electrolyte composition characterized in comprising an electrolyte powder, a binder, and an ion-conductive material; the electrolyte powder being an oxide-based ceramic electrolyte powder; the binder being a polymer compound that is stable with respect to metal ions; the ion-conductive material being a solvated ion-conductive material or an ion-conductive solution having a metal ion-based compound. An electrolyte film characterized in being provided with an electrolyte powder and a composite material in which a binder and an ion-conductive material are made into a composite.

Abstract: Provided is a separator which can make the electric field on the surface of a negative electrode for a metal secondary battery homogeneous to thereby prevent the formation of dendrites. A porous separator for metal secondary batteries, which has a polymer electrolyte layer formed on the surface layer of at least one main surface of a porous polyimide film. It is preferred that the polymer electrolyte layer is composed of both a polymer electrolyte material which is supported on at least one main surface of the porous polyimide film and a polymer electrolyte material which is supported in voids in a layered region that extends from the main surface.

Abstract: (Problem to be Solved) The present application is to provide an all-solid-state lithium-sulfur battery that experiences little reduction in battery performance even after repeated charging/discharging cycling, does not generate toxic gas when damaged, and does not require addition of equipment or the like for management of moisture or oxygen concentration; and a production method for the all-solid-state lithium-sulfur battery. (Means for Solution) The present invention uses a positive electrode that contains sulfur and a conductive material, a negative electrode that contains lithium metal, and, as an electrolyte layer that is interposed between the positive electrode and the negative electrode, an oxide solid electrolyte to achieve a high-performance all-solid-state lithium-sulfur battery.

Abstract: A lithium metal secondary battery includes a positive electrode, a negative electrode, a solid electrolyte, and a soft electrolyte. The negative electrode includes a negative electrode current collector having at least one hole, in which lithium metal is deposited in a charged state. The solid electrolyte is disposed on the surface, which face negative electrode current collector, of the positive electrode. The soft electrolyte fills the space between the negative electrode current collector and solid electrolyte and entering into the at least one hole. The solid and soft electrolytes have lithium ion conductivity.

Abstract: (Problem to be Solved) The present application is to provide: a positive electrode material for producing a lithium-sulfur solid-state battery that does not experience degradation of battery performance from charging/discharging cycling, does not present the fire risk of liquid electrolytes, and thereby makes battery performance compatible with safety; an all-solid-state lithium-sulfur battery that uses the positive electrode material; and a production method. (Means for Solution) The present application relate to a lithium-sulfur solid-state battery positive electrode material that contains: sulfur; a conductive material; a binder; and an ionic liquid or a solvate ionic liquid, and an all-solid-state lithium-sulfur battery that includes: a positive electrode that comprises the positive electrode material; a negative electrode; and an oxide solid electrolyte.

Abstract: To provide an electrode which can sufficiently exhibit the battery characteristics necessary for a solid-state battery, a production method therefor, an electrode composition for producing said electrode, and a battery using the electrode.

Abstract: (Problem to be Solved) The present application is to provide: a positive electrode material for producing a lithium-sulfur solid-state battery that does not experience degradation of battery performance from charging/discharging cycling, does not present the fire risk of liquid electrolytes, and thereby makes battery performance compatible with safety; an all-solid-state lithium-sulfur battery that uses the positive electrode material; and a production method. (Means for Solution) The present application relate to a lithium-sulfur solid-state battery positive electrode material that contains: sulfur; a conductive material; a binder; and an ionic liquid or a solvate ionic liquid, and an all-solid-state lithium-sulfur battery that includes: a positive electrode that comprises the positive electrode material; a negative electrode; and an oxide solid electrolyte.

Abstract: (Problem to be Solved) The present application is to provide an all-solid-state lithium-sulfur battery that experiences little reduction in battery performance even after repeated charging/discharging cycling, does not generate toxic gas when damaged, and does not require addition of equipment or the like for management of moisture or oxygen concentration; and a production method for the all-solid-state lithium-sulfur battery. (Means for Solution) The present invention uses a positive electrode that contains sulfur and a conductive material, a negative electrode that contains lithium metal, and, as an electrolyte layer that is interposed between the positive electrode and the negative electrode, an oxide solid electrolyte to achieve a high-performance all-solid-state lithium-sulfur battery.

Abstract: A lithium metal secondary battery includes a positive electrode, a negative electrode, a solid electrolyte, and a soft electrolyte. The negative electrode includes a negative electrode current collector having at least one hole, in which lithium metal is deposited in a charged state. The solid electrolyte is disposed on the surface, which face negative electrode current collector, of the positive electrode. The soft electrolyte fills the space between the negative electrode current collector and solid electrolyte and entering into the at least one hole. The solid and soft electrolytes have lithium ion conductivity.

Abstract: A method for manufacturing, a secondary battery separator including a porous resin film in which pores have three-dimensionally ordered structure and are in mutual communication via through-holes. The method includes: uniformly dispersing spherical microparticles having narrow particle size distribution in a dispersion medium to prepare a microparticles-dispersed slurry; drying slurry to obtain a spherical microparticles-dispersed film; heat-treating the film to form a microparticles-resin film in which the microparticles are regularly arrayed in three-dimensions in a resin matrix; and contacting the microparticles-resin film with an organic acid, water, an alkaline solution or an inorganic acid other than hydrofluoric acid to dissolve and remove the microparticles, or heating the microparticles-resin film to remove the microparticles, to form pores which are in mutual communication and regularly arrayed in the resin matrix.

Abstract: A lithium secondary battery having a positive electrode, a negative electrode, a separator and an electrolyte solution, in which the positive electrode contains a first active material and a second active material each capable of intercalating and deintercalating lithium. The first active material is in the state under which only deintercalation of lithium can be carried out in a battery reaction with the negative electrode immediately after assembly of the lithium secondary battery, and the second active material is in the state under which lithium can be intercalated in the battery reaction with the negative electrode immediately after assembly of the lithium secondary battery. The negative electrode contains metal lithium as an active material. The separator has a structure in which pores are three-dimensionally regularly arranged.

Abstract: A positive electrode active material includes LiMn1-xMxPO4 (wherein M represents at least one element selected from Mg, Fe, Ni, Co, Ti, and Zr; and 0?x<0.5) and has an average pore diameter of 8 nm or more and not more than 25 nm and a total pore volume of 0.05 cm3/g or more and not more than 0.3 cm3/g.

Abstract: Provided is a separator which can make the electric field on the surface of a negative electrode for a metal secondary battery homogeneous to thereby prevent the formation of dendrites. A porous separator for metal secondary batteries, which has a polymer electrolyte layer formed on the surface layer of at least one main surface of a porous polyimide film. It is preferred that the polymer electrolyte layer is composed of both a polymer electrolyte material which is supported on at least one main surface of the porous polyimide film and a polymer electrolyte material which is supported in voids in a layered region that extends from the main surface.

Abstract: A nonaqueous secondary battery, a manufacturing method thereof, and an electrolyte. The battery includes a positive electrode, a negative electrode, a substrate and an electrolyte, in which respective end surfaces of the positive electrode and the negative electrode face each other at a distance, the positive electrode and the negative electrode are arranged in substantially the same plane, the substrate fixingly supports the positive electrode and the negative electrode, the electrolyte is present between the facing end surfaces of the positive electrode and the negative electrode, the electrolyte is involved in a battery reaction between the positive electrode and the negative electrode, and the electrolyte contains ion conductive inorganic solid electrolyte particles and a liquid electrolyte component.

Abstract: A method of manufacturing a multicomponent lithium phosphate compound particle with an olivine structure of formula LiyM11-ZM2ZPO4, M1 is Fe, Mn or Co; Y satisfies 0.9?Y?1.2; M2 is Mn, Co, Mg, Ti or Al; and Z satisfies 0<Z?0.1, in which the M2 concentration is continuously lowered from a surface of the particle to a core portion of the particle. The method includes mixing a lithium M1 phosphate compound with an olivine structure of formula LiXM1PO4, M1 is Fe, Mn or Co, and X satisfies 0.9?X?1.2, and a precursor of a lithium M2 phosphate compound with an olivine structure of formula LiXM2PO4, M2 is Mn, Co, Mg, Ti or Al, and X satisfies 0.9?X?1.2, to form a mixture; and subjecting the mixture to heating in an inert atmosphere or a vacuum.

Abstract: The formation of cracks is suppressed in a drying process for a water-containing wet gel without modifying the gel and without using a reagent. A water-containing wet gel is dried by removing water and then removing the remaining solvent. For example, a wet-gel container storing water-containing wet gel, containing a wet gel and a solvent, is heated. The solvent is vaporized into an upper space of the wet-gel container. The solvent-containing gas diffuses into a dehydrating agent container, and water is removed by a dehydrating agent. This state is maintained for one to two days to remove almost all amount of water from the solvent. Thereafter, the dehydrating agent container is detached and the wet gel, from which water has been removed, is heated to almost completely remove the solvent, and further heated at a higher temperature to completely remove the solvent to obtain a crack-free dry gel.

Abstract: A method for manufacturing, a secondary battery separator including a porous resin film in which pores have three-dimensionally ordered structure and are in mutual communication via through-holes. The method includes: uniformly dispersing spherical microparticles having narrow particle size distribution in a dispersion medium to prepare a microparticles-dispersed slurry; drying slurry to obtain a spherical microparticles-dispersed film; heat-treating the film to form a microparticles-resin film in which the microparticles are regularly arrayed in three-dimensions in a resin matrix; and contacting the microparticles-resin film with an organic acid, water, an alkaline solution or an inorganic acid other than hydrofluoric acid to dissolve and remove the microparticles, or heating the microparticles-resin film to remove the microparticles, to form pores which are in mutual communication and regularly arrayed in the resin matrix.

Abstract: The present invention provides a ceramic material allowing a pellet having higher density and satisfactory Li ion conduction to be obtained. The ceramic material contains Li, La, Zr, Al and O and has a garnet-type or garnet-like crystal structure, the ratio of the number of moles of Li with respect to La being 2.0 or greater to 2.5 or lower.