Zeon Corporation

Fuji Xerox Co., Ltd.

Asahi Kasei Chemicals Corporation

Kenya Sonobe

Katsumi Nukada

Wataru Yamada

Takatsugu Doi

Tsuyoshi Miyamoto

Yasuhiro Isshiki

Yusuke Adachi

Maki Mesuda

Yusaku Matsuo

Naoki Takahashi

Yuko Iwadate

Norikazu Yamamoto

Hiroki Oguro

Ai Masuda

Yasuhiro Wakizaka

Kazuki Asai

Masanori Shibuya

Noritaka Tanimura

Takuya Kaneda

Yukie Ito

Takafumi Sekimoto

Yasuhiro Akita

Miho Sonobe

Provided is a binder composition for an all-solid-state secondary battery that can yield an all-solid-state secondary battery having excellent output characteristics and high-temperature cycle characteristics. The binder composition for an all-solid-state secondary battery contains a polymer, an anti-aging agent, and an organic solvent. The polymer includes a (meth)acrylic acid ester monomer unit in a proportion of not less than 25 mass % and not more than 95 mass % and has a gel content of 50 mass % or less. The anti-aging agent is contained in an amount of not less than 0.005 parts by mass and not more than 0.5 parts by mass per 100 parts by mass of the polymer.

Binder composition for all-solid-state secondary battery

Provided is a novel technique relating to electrochemical devices that makes it possible to ensure a high level of safety of an electrochemical device while also causing the electrochemical device to display excellent high-temperature storage characteristics. One or more composite particles for an electrochemical device each include a core particle and a shell portion at least partially covering an outer surface of the core particle. The core particle contains a melamine compound, and the shell portion contains an inorganic material.

Composite particles for electrochemical device and method of producing same, binder composition for electrochemical device functional layer and method of producing same, conductive material paste for electrode mixed material layer and method of producing same, slurry for electrode mixed material layer, electrode for electrochemical device, and electrochemical device

Provided is a slurry composition for a functional layer that can form a functional layer capable of closely adhering strongly to a separator substrate and that can enhance rate characteristics of a secondary battery including a separator that includes the functional layer. The slurry composition for a functional layer contains a binder and a melamine compound. The binder is a polymer including at least one functional group selected from the group consisting of a carboxy group, a hydroxyl group, an amino group, an epoxy group, an oxazoline group, a sulfo group, a nitrile group, and an amide group. The melamine compound has a volume-average particle diameter of not less than 20 nm and not more than 300 nm and constitutes a proportion of not less than 0.5 mass % and not more than 85 mass % among the total of the binder and the melamine compound.

Slurry composition for non-aqueous secondary battery functional layer, separator for non-aqueous secondary battery, and non-aqueous secondary battery

A conductive paste for an electrode mixed material layer has a water content of 1,000 ppm or less. The paste contains a conductive additive, not less than 3 parts by mass and not more than 200 parts by mass of a polymer per 100 parts by mass of the conductive additive, and not less than 12 parts by mass and not more than 350 parts by mass of expandable particles per 100 parts by mass of the conductive additive. The polymer includes at least one functional group selected from the group consisting of a carboxyl group, a hydroxyl group, an amino group, an epoxy group, an oxazoline group, a sulfo group, a nitrile group, an ester group, and an amide group. The expandable particles have an initial thermal decomposition temperature of not lower than 120° C. and not higher than 400° C.

Conductive paste for electrode mixed material layer, slurry for electrode mixed material layer, electrode for electrochemical device, and electrochemical device

Provided is a binder composition for a non-aqueous secondary battery electrode that can inhibit electrode swelling associated with repeated charging and discharging while also causing a secondary battery to display excellent cycle characteristics. The binder composition contains a graft copolymer having a structure in which a branch polymer is bonded to a backbone polymer. The backbone polymer includes a hydroxyl group-containing vinyl monomer unit in a proportion of not less than 5 mass % and not more than 89 mass % and has a weight-average molecular weight of not less than 1.0×10and not more than 2.0×10. The branch polymer includes a water-soluble monomer unit that is formed from a water-soluble monomer having a solubility of not less than 0.01 g/100 g-HO and not more than 25 g/100 g-HO at a temperature of 20° C.

Binder composition for non-aqueous secondary battery electrode, slurry composition for non-aqueous secondary battery electrode, electrode for non-aqueous secondary battery, and non-aqueous secondary battery

Provided is a binder composition for a secondary battery with which a slurry composition for a secondary battery having low foaming can be produced, and that can improve handleability of a functional layer or electrode layer formed using the produced slurry composition for a secondary battery. The binder composition for a secondary battery contains a polymer A and a solvent. The polymer A includes an amide group-containing monomer unit and a carboxylic acid ester-containing monomer unit including an alkyl chain having a carbon number of not less than 2 and not more than 9. Content of the carboxylic acid ester-containing monomer unit in the polymer A is not less than 12 mass % and not more than 28 mass %.

Binder composition for secondary battery, slurry composition for secondary battery, functional layer for secondary battery, electrode layer for secondary battery, and secondary battery

Provided is a binder composition for an all-solid-state secondary battery with which it is possible to form a solid electrolyte-containing layer that can cause an all-solid-state secondary battery to display excellent output characteristics and high-temperature cycle characteristics. The binder composition contains a polymer A that includes a nitrile group-containing monomer unit and an aliphatic conjugated diene monomer unit. The proportional content of the nitrile group-containing monomer unit in the polymer A is not less than 5 mass % and not more than 30 mass %, and the proportional content of the aliphatic conjugated diene monomer unit in the polymer A is not less than 40 mass % and not more than 95 mass %. The polymer A has a Mooney viscosity (ML, 100° C.) of 65 or more.

Binder composition for all-solid-state secondary battery, slurry composition for all-solid-state secondary battery electrode mixed material layer, slurry composition for all-solid-state secondary battery solid electrolyte layer, and all-solid-state secondary battery

A binder composition contains an organic solvent and a binder that includes a particulate polymer A and a highly soluble polymer B. The particulate polymer A includes an ethylenically unsaturated acid monomer unit in a proportion of not less than 1.0 mass % and not more than 10.0 mass % and a (meth)acrylic acid ester monomer unit in a proportion of not less than 30.0 mass % and not more than 98.0 mass %. The particulate polymer A includes two particulate polymers A1 and A2 having different volume-average particle diameters. The volume-average particle diameters D50and D50of these particulate polymers A1 and A2 satisfy a formula: D50>D50≥50 nm.

Binder composition for non-aqueous secondary battery electrode, slurry composition for non-aqueous secondary battery electrode and method of producing same, electrode for non-aqueous secondary battery, and non-aqueous secondary battery

A binder composition for a secondary battery positive electrode contains a polymer including a nitrile group-containing monomer unit, an aromatic vinyl monomer unit, a hydrophilic group-containing monomer unit, a conjugated diene monomer unit, and a linear alkylene structural unit having a carbon number of 4 or more. The aromatic vinyl monomer unit is included in the polymer in a proportion of not less than 30.0 mass % and not more than 60.0 mass %. The polymer has an iodine value of not less than 60 mg/100 mg and not more than 150 mg/100 mg.

Binder composition for secondary battery positive electrode, slurry composition for secondary battery positive electrode and method of producing same, positive electrode for secondary battery, and secondary battery

Provided is a binder composition for lithium ion secondary battery electrode-use that reduces internal resistance of a lithium ion secondary battery while also providing the lithium ion secondary battery with excellent life characteristics. The binder composition contains a copolymer X and a solvent. The copolymer X is obtained from a monomer composition X that contains at least 20.0 mass % and no greater than 75.0 mass % of an ethylenically unsaturated carboxylic acid compound (A) composed of either or both of an ethylenically unsaturated carboxylic acid and an ethylenically unsaturated carboxylic acid salt, and at least 20.0 mass % and no greater than 75.0 mass % of a copolymerizable compound (B) that has an ethylenically unsaturated bond and a solubility of at least 7 g in 100 g of water at 20&#xb0; C. The copolymer X has a degree of swelling in electrolysis solution of less than 120 mass %.

Binder composition for lithium ion secondary battery electrode-use, slurry composition for lithium ion secondary battery electrode-use, electrode for lithium ion secondary battery-use, and lithium ion secondary battery

A binder composition for a non-aqueous secondary battery electrode contains a water-soluble polymer including, in a proportion of at least 0.1 mass % and not more than 20 mass %, a monomer unit derived from a monomer represented by general formula (1): CH&#x2550;C(R) &#x2014;C&#x2550;O&#x2014;NH&#x2014;R&#x2014;OH (Ris hydrogen or an alkyl group and Ris (CHR)(O(CHR))[n=1 to 10; m=1 to 4; 1=0 to 3; and Ris hydrogen or an alkyl group having a carbon number of 1 to 4]).

Provided is a binder composition for an electrochemical device that has excellent binding capacity and is capable of forming a functional layer that can improve rate characteristics and cycle characteristics of an electrochemical device (for example, a secondary battery). The binder composition for an electrochemical device contains a binder and an organonitrogen compound. The binder is a polymer including at least one functional group selected from the group consisting of a carboxyl group, a hydroxyl group, a cyano group, an amino group, an epoxy group, an oxazoline group, an isocyanate group, and a sulfo group. The organonitrogen compound includes at least one functional group selected from the group consisting of an azo group, a hydrazino group, a hydrazo group, and a nitroso group, has a 5% mass loss temperature of 140&#xb0; C. or higher, and has a molecular weight of not less than 80 and not more than 1,000.

Binder composition for electrochemical device, slurry composition for electrochemical device functional layer, slurry composition for electrochemical device adhesive layer, and composite membrane

Provided is an electrode for an electrochemical device that has excellent peel strength and can ensure a high level of safety of an electrochemical device. The electrode for an electrochemical device includes a current collector and an electrode mixed material layer on the current collector. The electrode mixed material layer contains an electrode active material, a binder, and a foaming agent. The binder is a polymer including a diene monomer unit and/or nitrile group-containing monomer unit, and in which the total proportion constituted by the diene monomer unit and nitrile group-containing monomer unit is 10 mass % to 80 mass %. Volume resistivity Rof a laminate of the electrode mixed material layer and current collector at 25&#xb0; C. is 0.1 &#x3a9;&#xb7;cm to 200 &#x3a9;&#xb7;cm, and a ratio of volume resistivity Rof the laminate at 350&#xb0; C. relative to volume resistivity Rof the laminate at 25&#xb0; C. is 10 or more.

Electrode for electrochemical device, electrochemical device, and method of producing electrode for electrochemical device

Provided is an additive for an electrochemical device that can ensure a high level of safety of an electrochemical device. The additive for an electrochemical device is an additive for an electrochemical device that is used in an electrochemical device, for which a temperature at which a volume expansion ratio thereof reaches a factor of 2 or more is higher than 150&#xb0; C. and lower than 400&#xb0; C., and in which the content of (A) each element belonging to group 2 of the periodic table is less than 100 mass ppm, the content of (B) each element belonging to group 17 of the periodic table is less than 100 mass ppm, and the content of (C) each element among Cr, Mn, Fe, Co, Ni, Cu, and Zn is less than 5 mass ppm.

Additive for electrochemical device, binder composition for electrochemical device, slurry composition for electrochemical device, electrode for electrochemical device, and electrochemical device

A binder composition for a non-aqueous secondary battery electrode contains an organic solvent and a binder that includes a polymer A including an ethylenically unsaturated acid monomer unit in a proportion of not less than 1.00 mass % and not more than 10.00 mass %. The polymer A has a viscosity of 10,000 mPa&#xb7;s or less at a shear rate of 0.1 swhen mixed with the organic solvent in a concentration of 8 mass % to obtain a mixture.

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Tokyo, Japan

Kenya Sonobe