National Institute of Advanced Industrial Science and Technology

Honda Motor Co., Ltd.

Nihon Spindle Manufacturing Co., Ltd.

Isuzu Glass Company, Ltd.

Sumitomo Seika Chemicals Co., Ltd.

Isuzu Glass Ltd.

Taichi Sakamoto

Takashi Mukai

Naoto Yamashita

Yuta Ikeuchi

Kiyoshi Tanaami

Tetsuo Sakai

Masahiro Yanagida

Shintaro Aoyagi

Koichiro Ikeda

Toshimitsu Tanaka

Makiko Takahashi

Yuji Isogai

Tomohiro Kinoshita

Kunihiko Tani

Kiichiro Yamaguchi

Keiichi Asami

Keiichiro Onishi

Junichi Fujishige

Erina Takahashi

Teppei Taniguchi

Kenji Izumi

Masako Kinno

To provide a nonaqueous electrolyte secondary battery which enables to suppress durability deterioration, improve energy density, and further suppress a decrease in the function of the nonaqueous electrolyte secondary battery cell. A nonaqueous electrolyte secondary battery, comprising: a positive electrode; and a negative electrode, wherein the negative electrode has: a current collector comprising a porous metal body; and a negative electrode material disposed in pores of the porous metal body, the negative electrode material comprises a negative electrode active material comprising a silicon-based material, a skeleton-forming agent comprising a silicate having a siloxane bond, a conductive auxiliary, and a binder, and a content of the skeleton-forming agent in an outside in a surface direction of the negative electrode is higher than a content of the skeleton-forming agent in an inside in the surface direction of the negative electrode.

Nonaqueous electrolyte secondary battery

To provide a negative electrode for nonaqueous electrolyte secondary batteries, by which the structural deterioration of the electrode is suppressed and cycle characteristics can be improved by absorbing the expansion and contraction of a silicon-based active material placed in the inside of a current collector made of porous metal, and a nonaqueous electrolyte secondary battery including the same. A negative electrode for nonaqueous electrolyte secondary batteries, having a current collector made of porous metal, and a negative electrode material placed in pores of the porous metal, the negative electrode material including a negative electrode active material including a silicon-based material; a skeleton forming agent including a silicate having a siloxane bond; a conductive additive; a binder; and a fibrous material.

Negative electrode for nonaqueous electrolyte secondary batteries and nonaqueous electrolyte secondary battery including the same

Provided are a negative electrode that is for use in a non-aqueous electrolyte secondary battery, includes a porous metal body as a current collector, contains a skeleton-forming agent highly infiltrated in the current collector so that it is less likely to suffer from structural degradation and provides improved cycle durability; and a non-aqueous electrolyte secondary battery including such a negative electrode. The negative electrode for use in a non-aqueous electrolyte secondary battery includes a current collector including a porous metal body; a first negative electrode material disposed in pores of the porous metal body and including a conductive aid, a binder, and a negative electrode active material including a silicon-based material; and a second negative electrode material disposed in pores of the porous metal body and including a skeleton-forming agent including a silicate having a siloxane bond.

Negative electrode for use in non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery including same

An object is to provide a non-aqueous electrolyte secondary battery negative electrode that can suppress a deterioration in durability and improve energy density, and a non-aqueous electrolyte secondary battery including the same. A non-aqueous electrolyte secondary battery negative electrode, comprising: a collector formed of a porous metal body, and a negative electrode material disposed in pores of the porous metal body, wherein the negative electrode material comprises a negative electrode active material formed of a silicon-based material, a skeleton-forming agent comprising a silicate having a siloxane bond, a conductivity aid, and a binder.

Non-aqueous electrolyte secondary battery negative electrode and non-aqueous electrolyte secondary battery including same

A lithium ion secondary battery includes a positive electrode having a positive electrode active material layer on a current collector, a negative electrode having a negative electrode active material layer on a current collector, and a separator disposed between the positive electrode and the negative electrode and impregnated with a non-aqueous electrolyte solution. The positive electrode active material layer contains a positive electrode active material and a binder, the negative electrode active material layer contains a negative electrode active material and a binder, the binder of the negative electrode active material layer contains a copolymer of vinyl alcohol and an alkali metal neutralized product of ethylenically unsaturated carboxylic acid, and the separator includes a polymeric base material containing an inorganic compound or includes a polymer having a melting point or glass transition temperature of 140&#xb0; C. or higher.

Lithium ion secondary battery and electric device using same

Provided is a method for manufacturing a slurry for a positive electrode of a nonaqueous electrolyte secondary battery containing an alkali metal complex oxide, the method making it possible to reliably deaerate surplus carbonic acid gas after an alkali component of a slurry containing the alkali metal complex oxide is neutralized within a short period of time. The method for manufacturing a slurry for a positive electrode of a nonaqueous electrolyte secondary battery includes a step of manufacturing an electrode slurry including a step of performing a neutralization treatment on an alkali component in the slurry by using inorganic carbon dissolved in a solvent of the slurry and a step of deaerating the inorganic carbon in the slurry as carbonic acid gas by causing cavitation.

Method for manufacturing slurry for positive electrode of nonaqueous electrolyte secondary battery and slurry for positive electrode of nonaqueous electrolyte secondary battery

There is provided a static electricity removal structure in a low-humidity space, in which static electricity can be removed with high efficiency in the low-humidity space by using a static electricity removal device. A low-humidity space is configured such that dehumidified air is supplied from one side of the low-humidity space into the low-humidity space through a blowout surface material in which ventilation pore is formed, and exhausting is performed from the other side of the low-humidity space, which opposes the blowout surface material. A static electricity removal device is disposed on a downstream side of the blowout surface material.

Structure of removing static electricity in low-humidity space

The teachings herein are directed at a lithium secondary battery negative electrode active material consisting of a Sn Sb based sulfide that delivers a high electrode capacity density, excellent output characteristics, and excellent cycle life characteristics and also provide a method for manufacturing the lithium secondary battery negative electrode active material, said method being capable of easily manufacturing the high performance lithium secondary battery negative electrode active material at low cost without requiring a high-temperature processing step and special facilities as required in a glass melting method. The negative electrode active material preferably is prepared using a method that includes a step of obtaining a Sn Sb based sulfide precipitate by adding an alkali metal sulfide to a mixed solution of a tin halide and an antimony halide.

Lithium secondary battery negative electrode active material and method for manufacturing same

Problem. Provided is a negative electrode material for a sodium secondary battery and its manufacturing method, and a negative electrode for a sodium secondary battery, and a sodium secondary battery, wherein the negative electrode material can have excellent cycle characteristics while maintaining high discharge capacity. Solution. A negative electrode material for a sodium secondary battery according to the present invention includes sulfide or sulfide composite body containing sulfur and antimony, and as necessary further includes the following component(s) of (i): (i) at least one or more element(s) selected from a group consisting of Sn, As, Bi, Ge, Ga, Pb, and C, wherein when a component(s) of (i) is included, the ratio of each of the above described components is sulfur: 10 to 70 mol %, antimony: 10 to 70 mol %, and (i): 3 to 60 mol %.

Negative electrode material for sodium secondary battery and method for producing same, negative electrode for sodium secondary batter, and sodium secondary battery

[Object] The object is to provide a negative electrode material for a lithium secondary battery, wherein a sulfide-based negative electrode with water-resistant properties can exert excellent cycle characteristics and high output performance while maintaining a high discharge capacity and there is no precipitation of lithium dendrites during charge at low temperature. [Means for Solving Problems] A negative electrode material for a lithium secondary battery comprising sulfur and sulfide glass including the following components (i) and (ii): (i) at least one or more elements selected from a group consisting of Sb, As, Bi, Ge, Si, Cu, Zn, Pd, In and Zr; and (ii) at least one or more elements selected from a group consisting of Se, Te, Ga, Sn, Pb, Cd, Al, Fe, Mg, Ca, Co, Ag, Sr, P and Ba, 

Negative electrode material for lithium secondary battery and its manufacturing method, and negative electrode for lithium secondary battery, and lithium secondary battery

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Osaka, Japan

Taichi Sakamoto