Mitsubishi Chemical Corporation

Mu Ionic Solutions Corporation

Yasuyuki Shigematsu

Minoru Kotato

Masamichi Onuki

Kunihisa Shima

Shuhei Sawa

Kanako Takiguchi

Hiroaki Yoshida

Shinichi Suzuki

Atsushi Watarai

Toyoshi Ohashi

Mariko Hayashi

An object is to provide a non-aqueous electrolyte solution that can improve the capacity deterioration and gas generation associated with the high-temperature storage of non-aqueous electrolyte batteries. A further object is to provide a non-aqueous electrolyte battery that uses this non-aqueous electrolyte solution. These objects can be achieved by using a non-aqueous electrolyte solution that incorporates, in prescribed contents, (A) a compound having at least two isocyanate groups per molecule and (B) a compound of formula (3):LiCFSO  (3)

Non-aqueous electrolyte solution and non-aqueous electrolyte secondary battery employing the same

Disclosed herein is a non-aqueous electrolyte secondary battery containing at least a positive electrode capable of the absorbing and releasing of a lithium ion, a negative electrode capable of the absorbing and releasing of the lithium ion, and a non-aqueous electrolyte solution containing a non-aqueous solvent and an electrolyte dissolved in the non-aqueous solvent, where

The present invention relates to a nonaqueous electrolytic solution for use in a nonaqueous electrolytic solution secondary battery that comprises a negative electrode and a positive electrode capable of storing and releasing metal ions, and a nonaqueous electrolytic solution, wherein the nonaqueous electrolytic solution contains the specific compounds (A) and (B).

Nonaqueous electrolytic solution and nonaqueous electrolytic solution secondary battery using same

Disclosed herein is a non-aqueous electrolyte solution containing, in addition to an electrolyte and a non-aqueous solvent, (A) a compound having at least two isocyanate groups per molecule, and (B) LiN(FSO).

An object is to provide a non-aqueous electrolyte solution that can improve the capacity deterioration and gas generation associated with the high-temperature storage of non-aqueous electrolyte batteries. A further object is to provide a non-aqueous electrolyte battery that uses this non-aqueous electrolyte solution. These objects can be achieved by using a non-aqueous electrolyte solution that incorporates, in prescribed contents, (A) a compound having at least two isocyanate groups per molecule and a compound having at least two cyano groups per molecule.

The demand for improvements in lithium non-aqueous electrolyte secondary batteries has been constantly increasing in recent years, but the durability&#x2014;most prominently the cycle characteristics&#x2014;have resided in a trade off relationship with properties such as the capacity, resistance, and output characteristics. A problem has thus been a poor overall property balance. In order to solve this problem, the present invention uses a non-aqueous electrolyte solution including, in addition to an electrolyte and a non-aqueous solvent, (A) at least one compound selected from the group consisting of carbonates having a carbon-carbon unsaturated bond, compounds represented by the following general formula (1), sulfoxides, sulfites, sulfones, sulfonates, sultones, and sulfates; (B) a fluorine atom-containing cyclic carbonate; and (C) a compound that has at least two isocyanate groups in the molecule.

A non-aqueous electrolyte solution for a non-aqueous electrolyte secondary battery that has a positive electrode and a negative electrode capable of the absorbing and releasing of a metal ion, and a separator, the non-aqueous electrolyte solution comprising, in addition to an electrolyte and a non-aqueous solvent, 0.01 mass % or more to less than 3 mass % of a compound having one or more partial structure represented by the following general formula (1) and two or more isocyanate groups in the molecule: (In the general formula (1), R represents hydrogen or a C-Corganic group that may contain an isocyanate group and is constituted of atoms selected from the group consisting of hydrogen atom, carbon atom, nitrogen atom, oxygen atom, sulfur atom, phosphorus atom, and halogen atom).

Non-aqueous electrolyte for secondary battery and non-aqueous electrolyte secondary battery employing the same

The electrophotgraphic photoreceptor is composed of an electrically conductive substrate having formed thereon a photosensitive layer containing a phthalocyanine mixed crystal comprising titanyl phthalocyanine and hydrogen phthalocyanine, wherein the phthalocyanine mixed crystal has peaks at 6.8.degree., 7.4.degree., 15.0.degree., 24.7.degree., 26.2.degree., and 27.2.degree. of the Bragg angle (2 .theta..+-.0.2.degree.) in the X-ray diffraction spectrum and having a ratio of the peak intensity at 27.2.degree. to the peak intensity at 6.8.degree. of 1 or more. The electrophotographic photoreceptor can output the output signals as digital signals even when the input light is a digital light or an analog light and thus the electrophotographic photoreceptor can be used for an electrophotograph of a digital recording system and even when the photorecetor is used as a conventional photoreceptor for PPC (analog light input), high-quality images having sharp edges can be obtained.

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Yokohama, Japan

Yasuyuki Shigematsu