Ube Industries, Inc.

Yuichi Kotou

Shoji Shikita

Koji Abe

Kei Shimamoto

Kazuhiro Miyoshi

Masahide Kondo

Yoshihiro Ushigoe

Junichi Chika

Ken Ikuno

Shuichi Koso

Tatsuo Fujino

Yosuke Sato

Takashi Hosomi

Toyoaki Ihara

The present invention provides a nonaqueous electrolytic solution capable of suppressing worsening of heat stability of a negative electrode and improving safety of an energy storage device while maintaining high-load charging and discharging cycle properties at a high temperature, an energy storage device using the same, and a phosphonoformic acid compound to be used for the same. The nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent contains 0.001 to 5% by mass of at least one selected from a phosphonoformic acid compound having at least one carbon-carbon unsaturated bond, which is represented by the following general formula (I), and a phosphonoformic acid compound having a carbon-carbon unsaturated bond or two phosphonocarbonyl groups, which is represented by the following general formula (II).  In the formula (I), each of Rto Ris an aliphatic organic group, provided that at least one of Rto Rrepresents a carbon-carbon unsaturated bond-containing aliphatic organic group.  In the formula (II), each of Rand Rrepresents an alkyl group, a cycloalkyl group, or an aryl group, and Rand Rmay be bonded to each other to form a ring structure. m represents 1 or 2; when m is 1, then Rrepresents an aryl group; when m is 2, then Rrepresents an alkylene group, an alkenylene group, or an alkynylene group; and a part of hydrogen atoms of Rto Rmay be substituted with a halogen atom.

Nonaqueous electrolyte solution, electricity storage device using same, and phosphonoformic acid compound used in same

A nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, containing a compound of formula (X): 

Non-aqueous liquid electrolyte, electricity storage device using same, and phosphorus compound used therein

The present invention provides a nonaqueous electrolytic solution capable of improving electrochemical characteristics in a broad temperature range and an energy storage device using the same. [1] A nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing, as an additive, an SOgroup-containing compound having a specified structure and [2] an energy storage device including a positive electrode, a negative electrode, and a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent, wherein the nonaqueous electrolytic solution contains, as an additive, 0.001% by mass or more and less than 5% by mass of an SOgroup-containing compound having a specified structure in the nonaqueous electrolytic solution, are disclosed.

Nonaqueous electrolyte solution and electricity storage device using same

The present invention includes [1] a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing from 0.001 to 5% by mass of a specified acyclic lithium salt in the nonaqueous electrolytic solution and being capable of improving electrochemical characteristics in a broad temperature range; and [2] an energy storage device including a positive electrode, a negative electrode, and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, the nonaqueous electrolytic solution containing from 0.001 to 5% by mass of a specified acyclic lithium salt in the nonaqueous electrolytic solution.

Non-aqueous electrolyte and power storage device using same

The present invention is to provide a nonaqueous electrolytic solution prepared by dissolving an electrolyte salt in a nonaqueous solvent, wherein the nonaqueous solvent includes 0.01 to 40% by volume of an ester having two alkyl groups at the &#x3b1;-position carbon of the carbonyl group and being represented by the following general formula (I), and an energy storage device. 

Nonaqueous electrolytic solution and energy storage device using same

An object of the present invention is to provide a nonaqueous electrolytic solution capable of improving low-temperature load characteristics after high temperature charging storage, an electrochemical element using it, and a 1,2-dioxypropane compound used for it. The nonaqueous electrolytic solution of the present invention comprises an electrolyte salt dissolved in a nonaqueous solvent, and contains a 1,2-dioxypropane compound represented by the above-mentioned general formula (I). 

Nonaqueous electrolyte solution, electrochemical element using same, and 1,2-dioxypropane compound used in same

The present invention is a method for producing an aromatic compound by substituting the sulfonic acid group in a sulfonic acid aromatic-ester with a hydrogen atom in the presence of a platinum group metal catalyst, wherein an alkali metal carboxylate and/or an ammonium formate are made to coexist in the system. According to the present invention, an aromatic compound where the sulfonic acid group in a sulfonic acid aromatic-ester is substituted with a hydrogen atom, can be produced efficiently with good operability without using metal magnesium.

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Ube, Japan

Yuichi Kotou