Daikin Industries, Ltd.

Akinori Tani

Hideo Sakata

Akiyoshi Yamauchi

Meiten Koh

Hitomi Nakazawa

Shinichi Kinoshita

Michiaki Okada

Masahiro Tomita

Tomoyo Sanagi

Tomo Shimada

Hiroyuki Arima

Takaya Yamada

Yoshiko Kuwajima

Junpei Terada

Aoi Nakazono

Yuki Adachi

Kyouhei Sawaki

Kae Fujiwara

Shigeaki Yamazaki

Takahiro Furutani

Tomoya Hidaka

Mayuko Taeda

Shinya Takano

Mayuko Takano

Michiru Kagawa

Toshiki Ichisaka

Hitomi Miyawaki

Provided are a composite that can be suitably used as an electrolyte in polymer-based solid-state batteries, and various electrochemical devices using the composite. The composite includes a fluorine-containing elastomer and an alkali metal salt as essential components, wherein the fluorine-containing elastomer is an amorphous fluorine-containing elastomer having a glass transition temperature of 25° C. or less, and the composite has a volatile content of 0.1 mass % or less with respect to the entire composite.

Polymer electrolyte including amorphous fluorine-containing elastomer and alkali metal salt, electrochemical device, polymer-based solid-state battery, and actuator including the same

A binder and a slurry suitable for use in the production of an electrode in a sulfide-based solid-state battery. The binder contains sulfide-based solid electrolyte particles, and is a polymer including a vinylidene fluoride unit and at least one copolymerization unit (A) selected from a monomer unit having a structure represented by formula (1) below and a monomer unit having a structure represented by formula (2) below: where Rfand Rfare each a linear or branched fluorinated alkyl or fluorinated alkoxy group with 1 to 12 carbon atoms, which optionally contains an oxygen atom between carbon-carbon atoms when the number of carbon atoms is 2 or more. The slurry contains sulfide-based solid electrolyte particles, the binder and a solvent. Also disclosed is an electrode including an electrode active material layer formed using the slurry and a lithium-ion secondary solid state battery including the electrode.

Binder, slurry for solid-state battery, electrode for solid-state battery, and secondary solid-state battery

An electrolyte solution containing a compound (1) represented by the formula (1): wherein Rand Rare each independently a C1-C4 alkyl group optionally containing an ether bond; and a compound (11) represented by the formula (11): wherein Rand Rare each independently a substituent that is a C1-C7 alkyl group or the like. The substituent optionally contains one or more divalent to hexavalent hetero atoms in its structure, with one or more hydrogen atoms each optionally replaced by a fluorine atom or a C0-C7 functional group. Also disclosed is an electrochemical device containing the electrolyte solution, a lithium ion secondary battery containing the electrolyte solution, and a module including the electrochemical device or the lithium ion secondary battery.

Electrolyte solution, electrochemical device, lithium ion secondary battery, and module

A binder and a slurry suitable for use in the production of an electrode in a sulfide-based solid-state battery. The binder contains sulfide-based solid electrolyte particles, and is a fluorine-containing elastomer in which resin end functional groups satisfy:0.01≤([—CHOH]+[—COOH])/([—CH]+[—CFH]+[—CHOH]+[—CHI]+[—OC(O)RH]+[—COOH]≤0.25where R represents an alkyl group with 1 to 20 carbon atoms. Also disclosed is an electrode including an electrode active material layer formed using the slurry and a lithium-ion secondary solid state battery including the electrode.

A compound represented by the following formula (1): wherein Rto R, each independently, are a C1-C6 organic group, optionally contain at least one selected from the group consisting of a hetero atom and an unsaturated bond, and are optionally linear, branched, or cyclic. Also disclosed is an electrolyte solution containing the compound, an electrochemical device containing the electrolyte solution, a lithium ion secondary battery containing the electrolyte solution and a module including the electrochemical device or the lithium ion secondary battery.

Compound, electrolytic solution additive, electrolytic solution, electrochemical device, lithium ion secondary battery, and module

The present invention provides a lithium ion secondary cell excellent in high-temperature storage characteristics and high voltage cycle characteristics; and a nonaqueous electrolyte for the cell. The present invention relates to a lithium ion secondary cell, comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte containing nonaqueous solvents and an electrolyte salt, the nonaqueous solvents comprising a fluorine-containing ether represented by the formula (1):Rf&#x2014;O&#x2014;Rf&#x2003;&#x2003;(1)wherein Rfand Rfare the same as or different from each other, each being a Calkyl group or a Cfluoroalkyl group; and at least one of Rfand Rfis a fluoroalkyl group, and the following compounds (I) and (II): (I) a fluorine-containing unsaturated compound; and (II) a hydroxy group-containing compound represented by the formula (2):RfOH&#x2003;&#x2003;(2)wherein Rfis the same as above, and the nonaqueous solvents comprising the compounds (I) and (II) in a total amount of 5000 ppm or less for the fluorine-containing ether.

Lithium ion secondary battery and nonaqueous electrolyte for lithium ion secondary battery

An electrolyte solution containing a compound represented by the following formula (1): wherein Rf is a C1-C8 fluorinated alkyl group, and vinylene carbonate. Also disclosed is an electrochemical device including the electrolyte solution, a lithium ion secondary battery including the electrolyte solution and a module including the lithium ion secondary battery.

Fluorinated unsaturated cyclic carbonate and process for producing the same

An unsaturated cyclic carbonate containing a fluorinated alkyl group represented by the following formula: wherein Rf is a C1-C8 fluorinated alkyl group.

Fluorinated unsaturated cyclic carbonate and process for producing same

The present invention aims to provide an electrolyte solution that suppresses generation of gas. The electrolyte solution of the present invention includes a non-aqueous solvent (I) containing one or both of a fluorinated cyclic carbonate and a fluorinated acyclic carbonate; an electrolyte salt (II); and a compound (III) represented by the following formula (1): wherein Ris a C1-C20 linear or branched alkenyl or alkyl group or a C3-C20 alkyl group having a cyclic structure; m is 0 or 1; Ris a C1-C20 linear or branched alkylene group or a C3-C20 alkylene group having a cyclic structure, Rand Reach may have an oxygen atom between carbon atoms if Rand Reach have two or more carbon atoms, but the oxygen atom is not adjacent to another oxygen atom.

Electrolytic solution, electrochemical device, lithium-ion secondary cell, and module

The present invention provides an electrolytic solution capable of restraining gas generation. The present invention relates to an electrolytic solution containing a nonaqueous solvent (I), an electrolyte salt (II), and a compound (III) represented by the following formula (1): wherein Rf represents a C1-C20 linear or branched fluorinated alkyl group or a C3-C20 fluorinated alkyl group having a cyclic structure, R represents a C1-C20 linear or branched alkylene group or a C3-C20 alkylene group having a cyclic structure, hydrogen atoms in R may be partially or fully replaced by fluorine atoms, Rf and R may each contain an oxygen atom between carbon atoms when having a carbon number of 2 or more as long as oxygen atoms are not adjacent to each other.

An object of the present invention is to provide a lithium cell exhibiting a high remaining capacity after high-temperature storage even if used at high voltages, and an electrolytic solution used for the cell. The present invention relates to an electrolytic solution containing a nonaqueous solvent; an electrolyte salt; and 10 vol % or more of a compound represented by the following formula (1) based on 100 vol % of the nonaqueous solvent, wherein R, Rand Rmay be the same as or different from one another, each representing a hydrogen atom, a fluorine atom, a C-Calkyl group, or a C-Cfluorinated alkyl group, excluding cases where all of R, R, and Rare hydrogen atoms or fluorine atoms.

Electrolyte solution, electrochemical device, lithium battery, and module

The present invention aims to provide an electrochemical device excellent in high temperature storage characteristics and cycling characteristics at high voltages, and a nonaqueous electrolyte for the electrochemical device. The present invention relates to an electrochemical device including: a positive electrode; a negative electrode; and a nonaqueous electrolyte containing a nonaqueous solvent and an electrolyte salt, wherein the nonaqueous solvent contains a fluorinated linear carbonate represented by the formula (1):RfOCOOR&#x2003;&#x2003;(1)(wherein Rf represents a C1-4 fluorinated alkyl group and R represents a C1-4 alkyl group), and further contains following compounds of (I) to (III) in a total amount of not more than 5000 ppm relative to the fluorinated linear carbonate: (I) a compound represented by the formula (2)RfOH&#x2003;&#x2003;(2)(wherein Rf is defined as above); (II) a compound represented by the formula (3)ROH&#x2003;&#x2003;(3)(wherein R is defined as above); and (III) a compound represented by the formula (4)ROCOCl&#x2003;&#x2003;(4)(wherein R is defined as above).

Electrochemical device and nonaqueous electrolyte solution for electrochemical device

The present invention directs to a non-aqueous electrolyte solution, including (I) at least one compound selected from the group consisting of fluorinated linear sulfones and fluorinated linear sulfonic acid esters, and (II) an electrolyte salt. Such a non-aqueous electrolyte solution has high oxidation resistance, minimizes its decomposition even when hydrofluoric acid is produced. Also, the solution is less likely to cause, in the case of being used for a secondary cell, swelling of the cell and lowering of the battery performance.

Non-aqueous electrolyte solution

A solvent for non-aqueous electrolytic solution of lithium secondary battery including a non-fluorine-containing cyclic carbonate (I), a non-fluorine-containing chain carbonate (II) and 1,2-dialkyl-1,2-difluoroethylene carbonate (III). When the total amount of (I), (II) and (III) is taken as 100% by volume, the non-fluorine-containing cyclic carbonate (I) is contained in an amount of 10 to 50% by volume, the non-fluorine-containing chain carbonate (II) is contained in an amount of 49.9 to 89.9% by volume and the 1,2-dialkyl-1,2-difluoroethylene carbonate (III) is contained in an amount of not less than 0.1% by volume and less than 30% by volume. A non-aqueous electrolytic solution including the above-mentioned solvent and a lithium secondary battery using the non-aqueous electrolytic solution are also disclosed.

Solvent including 1,2-dialkyl-1,2-difluoroethylene carbonate for non-aqueous electrolytic solution of lithium secondary battery

The present invention provides a process for preparing fluorinated 1,3-dioxolan-2-one by reacting a derivative of 1,3-dioxolan-2-one having halogen atom other than fluorine with an amine hydrofluoride in an organic solvent, and in this preparation process, fluorinated 1,3-dioxolane-2-on can be prepared in a short period of time by liquid-liquid reaction while maintaining high yield, by using a derivative of 1,3-dioxolan-2-one having halogen atom other than fluorine as a starting material and fluorinating the derivative with a fluorinating agent.

Growing community of inventors

Settsu, Japan

Akinori Tani