Tokyo, Japan
Tokyo, Japan

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A resin tapping member used for a method of separating and recovering that enables a polymer to be separated and recovered from a polymer-containing liquid during or after a polymerization reaction at a high quality, high efficiency, and high processing capacity. The resin tapping member for preventing clogging of a screen is used in separating and recovering a polymer obtained by a polymerization reaction in a solvent. The resin tapping member has a weight reduction percentage of 3 wt. % or less after continuous separating and recovering of a polymer from a polymer-containing liquid for 48 hours.


The present invention provides a production method and a production apparatus for a polyarylene sulfide (PAS), thus the formation of a floating polymer and the leakage of the floating polymer to the outside of the vessel in a washing step are prevented, to achieve steady production of the polymer with high quality, to improve the yield of the polymer and to reduce environmental load, wherein the floating polymer refers to a particles of the polymer which are floating on the surface of a washing solution, in the upper part of the inside of a washing vessel, as a result of the adhesion of a gas onto the surface of the particles of the polymer. The present invention provides a production method for a PAS comprising step (I), performing polymerization, step (II), separating and collecting a polymer, step (III), washing a slurry, and step (IV), collecting the polymer after washing, wherein an aqueous medium is sprayed onto a PAS floating on the surface of the aqueous washing solution in the upper part of the inside of the washing vessel in step (III) (step (IIIa), washing a slurry using a counter current, and/or step (IIIb), treating a slurry with acid using a counter current, or the like); and a production apparatus for a PAS comprising a washing device (counter current washing device and/or a counter current contact/acid treatment device or the like) having an aqueous medium spray means.


To provide a carbonaceous material for a non-aqueous electrolyte secondary battery anode that yields an anode for a non-aqueous electrolyte secondary battery having excellent input/output characteristics, and a non-aqueous electrolyte secondary battery having high discharge capacity per unit volume, and a non-aqueous electrolyte secondary battery and a vehicle comprising this non-aqueous electrolyte secondary battery anode. The carbonaceous material for a non-aqueous electrolyte secondary battery anode of the present invention has a number average particle size of from 0.1 to 2.0 m, a value of a number average particle size divided by a volume average particle size of not greater than 0.3, an average interlayer spacing d_(002) of an (002) plane determined by X-ray diffraction of from 0.340 to 0.390 nm, and an atomic ratio (H/C) of hydrogen and carbon of not greater than 0.10.


Provided is a carbonaceous material for a non-aqueous electrolyte secondary battery anode having high discharge capacity per unit volume and excellent storage characteristics. The carbonaceous material for a non-aqueous electrolyte secondary battery anode of the present invention has a true density (_(Bt)) determined by a pycnometer method using butanol of not less than 1.55 g/cm^(3) and less than 1.75 g/cm^(3) and a discharge capacity of an anode at 0.05 V to 1.5 V in terms of a lithium reference electrode standard of not less than 180 mAh/g. Furthermore, the slope 0.9/X (Vg/Ah) of a discharge curve calculated from a discharge capacity X (Ah/g) and a potential difference of 0.9 (V) corresponding to 0.2 V to 1.1 V in terms of a lithium reference electrode standard is not greater than 0.75 (Vg/Ah), and an absorbed moisture quantity after storage for 100 hours in a 25C 50% RH air atmosphere is not greater than 1.5 wt%.


To provide a method of melt-molding a vinylidene fluoride resin, in which the melt molding can be performed at a lower temperature. A composition is melt-molded at a shear rate of 1 s^(-1) to 600 s^(-1), where the composition contains a vinylidene fluoride resin having a weight average molecular weight of 250,000 to 450,000 and polyethylene having a melt flow rate of 0.04 g/10 min to 40 g/10 min, and an amount of the polyethylene being from 0.1 parts by mass to 5.0 parts by mass per 100 parts by mass of the vinylidene fluoride resin.


An object of the present invention is to provide an all-solid battery having high energy density. The problem can be solved by a negative electrode for an all-solid battery comprising:a carbonaceous material having a true density of from 1.30 g/cm^(3) to 1.70 g/cm^(3) determined by a butanol method, a specific surface area of from 0.5 to 50.0 m^(2)/g, an average particle size D_(v50) of from 1 to 50 m, and a combustion peak T (C) according to differential thermal analysis and a butanol true density _(Bt) (g/cm^(3)) satisfying the following formula (1): a solid electrolyte.


An object of the present invention is to provide a production method for suppressing the deformation of a negative electrode in the production of a negative electrode for an all-solid-state battery using turbostratic carbon and a solid electrolyte. The problem described above can be solved by a production method for a negative electrode for an all-solid-state battery comprising the steps of:(1) coating a carbonaceous material having a true density of from 1.30 g/cm^(3) to 2.10 g/cm^(3) determined by a butanol method with a solid electrolyte; and(2) pressure-molding the solid electrolyte-coated carbonaceous material.


A negative electrode material for a non-aqueous electrolyte secondary battery and the like with high discharge capacity relative to volume and excellent cycle characteristics are provided. The negative electrode material for a non-aqueous electrolyte secondary battery of the present invention comprises, as an active material, a carbon material mixture including a non-graphitic carbon material and a graphitic material. In this carbon material mixture, the non-graphitic carbon material has an atom ratio (H/C) of hydrogen atoms to carbon atoms determined by elemental analysis of 0.10 or less, and an average particle size (D_(v50)) of from 1 to 8 m; and the graphitic material has a true density (_(Bt)) determined by a pycnometer method using butanol of 2.15 g/cm^(3) or greater. The true density (_(Bt)) of the non-graphitic carbon material is preferably 1.52 g/cm^(3) or greater and less than 2.15 g/cm^(3).


The vinylidene fluoride copolymer of the present invention is a polymer obtained by copolymerizing at least one type of fluorine-based monomer selected from hexafluoropropylene and chlorotrifluoroethylene, vinylidene fluoride, and a compound represented by formula (1) (wherein X is an atomic group having a hydroxyl group or a carboxyl group and having a molecular weight of not greater than 517 with a main chain having from 1 to 19 atoms) and is obtained by adding the compound represented by formula (1) to the fluorine-based monomer and vinylidene fluoride in divided portions or continuously during copolymerization. The gel electrolyte of the present invention contains the vinylidene fluoride copolymer and a non-aqueous electrolyte solution, and the gel electrolyte has an excellent balance of ionic conductivity and gel strength.


A carbonaceous material for a negative electrode of a non-aqueous electrolyte secondary battery with high energy density relative to volume and excellent cycle characteristics is provided. The negative electrode material for a non-aqueous electrolyte secondary battery of the present invention includes a carbon material mixture including, as an active material, a plurality of non-graphitic carbon materials. The carbon material mixture has a true density (_(Bt)) determined by a pycnometer method using butanol of 1.60 g/cm^(3) or greater and 2.05 g/cm^(3) or less, an atom ratio (H/C) of hydrogen atoms to carbon atoms determined by elemental analysis of 0.10 or less, and a discharge capacity at from 0 to 0.1 V based on a lithium reference electrode of 80 mAh/g or greater and 230 mAh/g or less.

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