Lg Energy Solution, Ltd.

Showa Denko Materials Co., Ltd.

Hitachi Chemical Company, Ltd.

Hiroki Mikuni

Yoshito Ishii

Hideyuki Ogawa

Takuya Nishimura

Yusuke Sera

Masayo Horikawa

Eisuke Haba

Nobuyuki Ogawa

Hiroo Nishiyama

Kaoru Konno

Kenji Takaoka

Yuma Gogyo

Akihiro Orita

Suguru Ueda

Kiyoshi Kawai

Katsunori Nishimura

Miyuki Muromachi

Yasuhiko Yoshinari

Minoru Hoshino

Kouichi Takei

Katsunori Kodato

An aspect of the present invention provides a manufacturing method for an electrolyte sheet, the manufacturing method including a step of molding a composition containing a polymer, Li[TFSI], oxide particles, and a dispersion medium into a sheet shape and volatilizing the dispersion medium at 100° C. or higher.

Electrolyte sheet and manufacturing method of secondary battery

Provided is an electrolyte composition, comprising one or two or more polymers, oxide particles, at least one electrolyte salt selected from the group consisting of a lithium salt, a sodium salt, a calcium salt, and a magnesium salt, and a solvent, wherein structural units constituting the one or two or more polymers comprises a first structural unit selected from the group consisting of tetrafluoroethylene and vinylidene fluoride, and a second structural unit selected from the group consisting of hexafluoropropylene, acrylic acid, maleic acid, ethyl methacrylate, and methyl methacrylate, a content of the one or two or more polymers is more than 90% by mass based on a total amount of polymers in the electrolyte composition, and a mass ratio of a content of the first structural unit to a content of the second structural unit in the one or two or more polymers is 50/50 or more.

Electrolyte composition, secondary cell, and method for manufacturing electrolyte sheet

A secondary battery includes: a positive electrode current collector; a negative electrode current collector; a positive electrode electrolytic solution part provided so as to be in contact with the positive electrode current collector, the positive electrode electrolytic solution part containing a positive electrode electrolytic solution; and a negative electrode electrolytic solution part provided so as to be in contact with the negative electrode current collector, the negative electrode electrolytic solution part containing a negative electrode electrolytic solution. The positive electrode electrolytic solution contains a positive electrode active material, an electrolyte salt, and a non-aqueous solvent containing a first solvent. The negative electrode electrolytic solution contains a negative electrode active material, an electrolyte salt, and a non-aqueous solvent containing a second solvent. The second solvent is a solvent having a reduction potential that is lower than an eigenvalue depending on the negative electrode active material.

Secondary battery

There is disclosed an electrolyte composition comprising one or two or more polymers, oxide particles having a hydrophobic surface, at least one electrolyte salt selected from the group consisting of a lithium salt, a sodium salt, a calcium salt, and a magnesium salt, and an ionic liquid.

Electrolyte composition and rechargeable battery

Disclosed is an electrochemical device electrode comprising an electrode current collector and an electrode mixture layer provided on at least one principal surface of the electrode current collector, wherein the electrode mixture layer comprises an electrode active material, a polymer having a structural unit represented by the following formula (1), at least one electrolyte salt selected from the group consisting of lithium salts, sodium salts, calcium salts, and magnesium salts, and a molten salt having a melting point of 250&#xb0; C. or less: 

Electrochemical device electrode. method for producing electrochemical device electrode and electrochemical device

There is disclosed a polymer electrolyte composition that comprises a polymer having a structural unit represented by the following formula (1), at least one electrolyte salt selected from the group consisting of lithium salts, sodium salts, and magnesium salts, and a molten salt having a melting point of 250&#xb0; C. or less: 

Polymer electrolyte composition including polymer having a structural unit represented by formula (1), electrolyte salt, and molten salt, and polymer secondary battery including the same

A lithium ion secondary battery includes: a cathode; an anode: a separator; and an electrolytic solution containing lithium hexafluorophosphate (LiPF) as a lithium salt, wherein the cathode includes a current collector and a cathode mixture formed on the current collector, and wherein the cathode mixture contains an aluminum oxide, a part or an entirety of a surface of the aluminum oxide being coated with carbon.

Lithium ion secondary battery including aluminum silicate

The aluminum silicate of the invention has: an element ratio of Si and Al, represented by Si/Al, of from 0.3 to 1.0 by molar ratio; a peak at approximately 3 ppm in aAl-NMR spectrum; peak A at approximately &#x2212;78 ppm and peak B at approximately &#x2212;85 ppm in aSi-NMR spectrum; and a peak at approximately 2&#x3b8;=26.9&#xb0; and a peak at approximately 2&#x3b8;=40.3&#xb0; in a powder X-ray diffraction spectrum. The aluminum silicate has an area ratio of peak B with respect to peak A of from 2.0 to 9.0, or does not include a tubular substance having a length of 50 nm or more as observed in a transmission electron microscope (TEM) photograph of the aluminum silicate taken at a magnification of 100,000. The aluminum silicate is produced by a method comprising: subjecting a reaction product of a silicate ion solution and an aluminum ion solution to desalting and solid separation; subjecting a resultant to a thermal treatment in an aqueous medium in the presence of an acid under concentration conditions in an aqueous medium such that a silicon atom concentration is 100 mmol/L or more and an aluminum atom concentration is 100 mmol/L or more; and subjecting a resultant to further desalting and solid separation.

Aluminum silicate, metal ion adsorbent, and method for producing same

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Tokyo, Japan

Hiroki Mikuni