Tokyo Metropolitan University

Ngk Insulators, Inc.

Tokyo Ohka Kogyo Co., Ltd.

Tti Ellebeau, Inc.

3dom Inc.

Screen Holdings Co., Ltd.

Sumitomo Osaka Cement Co., Ltd.

The Furukawa Battery Co., Ltd.

Tokyo Electric Power Company Holdings, Inc.

Kabushiki Kaisha Toshiba

Panasonic Intellectual Property Management Co., Ltd.

Nissan Motor Company Limited

Kiyoshi Kanamura

Hirokazu Munakata

Akihiko Matsumura

Toshihiro Yoshida

Yosuke Sato

Mizuo Nakayama

Takehiko Matsumura

Hidero Akiyama

Takahiro Asai

Takeshi Matsuda

Masanori Hara

Masakazu Sanada

Hiroyoshi Sago

Kazuhiro Yamamoto

Kenta Hiramatsu

Hidetoshi Abe

Atsushi Kaeriyama

Mitsumasa Saito

Tomonori Suzuki

Kazuhiro Imazawa

Hideo Michibata

Mao Shoji

Takashi Eguro

Norio Takami

Hiroki Inagaki

Keigo Hoshina

Takashi Ono

Koichi Misumi

Junichi Sakamoto

Akira Kano

Tooru Matsui

Masahiro Suzuki

Akihiko Honda

Yoshihiro Ito

Kazuko Asano

Akihiko Tanioka

Shungo Kuwatani

Ryohei Maehana

Nobuharu Kosiba

Sayaka Okuda

Mie Minagawa

Sakae Torisawa

Yoriko Kobayashi

Yongcheng Jin

Koichi Kajiwara

Sayaka c/o Kanamura Office On Research Okuda

Masanori c/o Kanamura Office On Research Hara

Yosuke Legal Affairs And Intellectual Property Dept Sato

Kazuhiro c/o Legal Affairs And Intellectual Property Dept Yamamoto

Hiroshi c/o Nissan Motor Co Ltd Ogawa

Toshihiro c/o Nissan Motor Co Ltd Takekawa

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 &#x3bc;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.

Lithium secondary battery separator and method of manufacturing same

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.

Separator for metal secondary batteries

(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. According to the present invention, after a positive electrode slurry that contains sulfur is applied to a positive electrode side of an oxide solid electrolyte formation body and dried to form a positive electrode, the oxide solid electrolyte molded body is mounted upon a lithium foil that will become a negative electrode and adhered to the lithium foil. Said process allows for efficient assembly of a battery cell that is configured to have an oxide solid electrolyte interposed between a positive electrode and a negative electrode.

All-solid-state lithium-sulfur battery and production method for same

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.

Lithium metal secondary battery using lithium metal as negative electrode active material

(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. The positive electrode material is manufactured by means of a method wherein a slurry obtained by adding an organic solvent to the sulfur, the conductive material, the binder, and the ionic liquid or solvate ionic liquid is applied to one surface of an oxide solid electrolyte formation body and dried to remove the organic solvent.

Solid-state battery positive electrode material, production method for solid-state battery positive electrode material, all-solid-state lithium-sulfur battery using solid-state battery positive electrode material, and production method for all-solid-state lithium-sulfur battery using solid-state battery positive electrode material

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. The medium has a resin precursor for the resin matrix and surfaces of the microparticles are inactive against the medium.

Method for manufacturing secondary battery separator and method for manufacturing lithium secondary battery

A positive electrode active material includes LiMnMPO(wherein M represents at least one element selected from Mg, Fe, Ni, Co, Ti, and Zr; and 0&#x2264;x&#x3c;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 cm/g or more and not more than 0.3 cm/g.

Positive electrode active material, nonaqueous electrolyte battery, and battery pack

A method of manufacturing a multicomponent lithium phosphate compound particle with an olivine structure of formula LiM1M2PO, M1 is Fe, Mn or Co; Y satisfies 0.9&#x2266;Y&#x2266;1.2; M2 is Mn, Co, Mg, Ti or Al; and Z satisfies 0&#x3c;Z&#x2266;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 LiM1PO, M1 is Fe, Mn or Co, and X satisfies 0.9&#x2266;X&#x2266;1.2, and a precursor of a lithium M2 phosphate compound with an olivine structure of formula LiM2PO, M2 is Mn, Co, Mg, Ti or Al, and X satisfies 0.9&#x2266;X&#x2266;1.2, to form a mixture; and subjecting the mixture to heating in an inert atmosphere or a vacuum.

Method of manufacturing a multicomponent system lithium phosphate compound particle having an olivine structure

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.

Drying device and method of aqueous moisture gel

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.

Ceramic material and use thereof

An electrode having excellent charge/discharge cycle characteristics and which is capable of improving a secondary battery capacity. An electrode is formed on the surface of a collector as an assembly of multiple porous domain structures that are apart from each other, the porous domain structures each having a polygonal shape without an acute angle in a planar view, the polygonal shape having a maximum diameter of 120 &#x3bc;m or less.

Secondary battery porous electrode

A negative-electrode active material layer formed between a negative-electrode current collector and a solid electrolyte layer has a line-and-space structure in which a plurality of stripe-shaped pattern elements extending in a Y direction are arranged while being separated from each other. A gradient at each contact point where the stripe-shaped pattern element, the negative-electrode current collector and the solid electrolyte layer are in contact with each other is made smaller than 90&#xb0;.

Battery, vehicle, electronic device and battery manufacturing method

A negative-electrode active material layercontains LiTiOas a negative-electrode active material, and a positive-electrode active material layercontains LiCoOas a positive-electrode active material. A solid electrolyte layercontains polyethylene oxide and polystyrene as an electrolyte material. Gradients of surfaces of stripe-shaped pattern elementsforming the negative-electrode active material layerare smaller than 90&#xb0; when viewed from a surface of the negative-electrode current collector. By such a construction, it is possible to construct a battery having a high capacity in relation to the used amount of the active materials and good charge and discharge characteristics.

Lithium-ion secondary battery, vehicle, electronic device and manufacturing method of lithium-ion secondary battery

There is disclosed a multi-component system lithium phosphate compound particles having an olivine structure and represented by a general formula of LiM1M2POin which M1 is one metal element selected from the group consisting of Fe, Mn and Co, Y is a number satisfying a formula of 0.9&#x2266;Y&#x2266;1.2, M2 is at least one metal element selected from the group consisting of Mn, Co, Mg, Ti and Al, and Z is an number satisfying a formula of 0&#x3c;Z&#x2266;0.1, wherein a concentration of the metal element M2 existing on a surface of the particle is higher than the concentration of that existing in core portion of the particle and that the concentration of the metal element M2 is continuously lowered from the surface of particle to a core portion of the particle.

Multi-component-system lithium phosphate compound particle having an olivine structure and lithium secondary battery employing the lithium phosphate compound particle as a positive electrode material

To provide a method for producing a comb-shaped electrode capable of precisely carrying a large amount of active materials on a surface of current collectors with a fine shape. The method for producing comb-shaped electrodesof the present invention includes a current collector forming step of forming a pair of comb-shaped current collectorson a surface of a substrate, a resist coating step of forming a resist layeron the surface of the substrate, and a guide hole forming step of forming guide holesfor forming a positive electrodeor a negative electrode, in which a cationic polymerization type resist composition (i), a novolak type resist composition (ii), a chemically-amplified type resist composition (iii), or a radical polymerization type resist composition (iv), is used as a resist composition for forming the resist layer

Method for producing comb-shaped electrode

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Hachioji, Japan

Kiyoshi Kanamura