GS Yuasa Patente

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A non-aqueous electrolyte energy storage device according to one aspect of the present invention includes: a positive electrode having a positive electrode active material layer; a negative electrode having a metal negative electrode substrate and a negative electrode active material layer containing graphite; and a separator disposed between the positive electrode active material layer and the negative electrode active material layer, in which the separator has an air resistance of not less than 125 seconds/100 mL, and X represented by the following formula (1) is not more than 890. X=PcTcTa/Pa (In formula (1), Pc is a porosity (%) of the positive electrode active material layer, Tc is a thickness (µm) of the positive electrode active material layer, Pa is a porosity (%) of the negative electrode active material layer, and Ta is a thickness (µm) of the negative electrode active material layer.)

A lead-acid battery includes an element and an electrolyte solution. The element includes a positive electrode plate containing a positive electrode material, a negative electrode plate containing a negative electrode material, and a separator interposed between the positive electrode plate and the negative electrode plate. The negative electrode material contains a first carbonaceous material having a particle size of less than 32 µm and a fatty acid having 8 or more and 30 or less carbon atoms. A content Cc of the first carbonaceous material in the negative electrode material is 0.4 mass% or more. When the content of the fatty acid on a mass basis in the negative electrode material is represented by Cf (ppm), the specific surface area of the negative electrode material is represented by Sn (m<2>/g), and the DBP oil absorption of the first carbonaceous material is represented by Y, at least one of the condition (i) or the condition (ii) is satisfied. (i) The ratio Cf/Y is 0.1 ppm ·mL<-1> ·100 g or more. (ii) The ratio Cf/Sn is 20 ppm ·m<-2> ·g or more.

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A non-aqueous electrolyte energy storage device according to one aspect of the present invention includes: a positive electrode including a lithium-transition metal composite oxide containing nickel and manganese; and a negative electrode including graphite, in which a molar ratio of cobalt to manganese in the lithium-transition metal composite oxide is less than 1.0, a molar ratio of nickel to manganese in the lithium-transition metal composite oxide is more than 1.0 and 1.5 or less, and a depth of charge of the graphite in a charged state is more than 0.40 and less than 0.65.

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A nonaqueous electrolyte energy storage device according to one aspect of the present invention includes a positive electrode containing a composite of a sulfur active material and porous carbon, and a nonaqueous electrolyte containing a nonaqueous solvent, in which the nonaqueous solvent contains at least one type of cyclic carbonate selected from a group consisting of a fluorinated cyclic carbonate and an unsaturated cyclic carbonate, and a fluorinated ether, and the content of the cyclic carbonate in the nonaqueous solvent is more than 50 vol%, and the fluorinated ether is represented by the following formula (1): R<1>-O-R<2> ··· (1) (in the formula (1), R<1> is a fluorinated alkyl group having the number of carbon atoms of 1 to 3; R<2> is an alkyl group having the number of carbon atoms of 1 or 2).

A carbon dioxide emission amount calculation device includes a control unit, in which the control unit acquires exhaust gas information of exhaust gas supplied to a carbon dioxide recovery unit that recovers carbon dioxide contained in the exhaust gas, specifies a first required time required for the carbon dioxide recovery unit to convert the supplied exhaust gas into a carbon dioxide concentrated gas based on the acquired exhaust gas information, and calculates a carbon dioxide emission amount required for carbon dioxide concentration based on electric power information regarding electric power supplied to the carbon dioxide recovery unit during the first required time.

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An energy storage apparatus according to the present invention includes: a plurality of energy storage devices aligned in a first direction; an end plate located at an end portion of the plurality of energy storage devices in the first direction; and a side plate which extends in the first direction and joins with the end plate, in which the side plate includes: a first part which extends in the first direction; a second part which extends from the first part so as to cover the end plate and is fixed to the end plate; and a third part which extends from the second part in the first direction along an installation surface of the energy storage apparatus and is fixed to the installation surface.