Daikin Industries, Ltd.

Toyota Jidosha Kabushiki Kaisha

Tomoya Hidaka

Shigeaki Yamazaki

Yoshiko Kuwajima

Kenzou Takahashi

Masakazu Kinoshita

Yuuki Suzuki

Takaya Yamada

Akiyoshi Yamauchi

Kotaro Hayashi

Hisako Nakamura

Toshiharu Shimooka

Hiroyuki Arima

Akinori Tani

Shinichi Kinoshita

Hideo Sakata

Tatsuya Ohtsuka

Yoshihiro Yamamoto

Hiroto Asano

Shimpei Kondo

Akira Koyama

An electrolytic solution, a lithium-sulfur secondary battery including the electrolytic solution and a module. The lithium-sulfur secondary battery has a positive electrode or a negative electrode containing a sulfur-containing electrode active material containing at least one selected from simple sulfur, lithium polysulfides (LiS: 1≤n≤8) and organosulfur compounds. The electrolytic solution contains: a fluorinated ether represented by: Rf—(OR)—O—R; an ether compound represented by: R—(OCHRCH)—OR; and an alkali metal salt, wherein Rf, R, R, R, R, R, n and x are as defined herein.

Electrolytic solution, lithium-sulfur secondary battery, and module

An electrolyte solution capable of reducing the initial resistance of an electrochemical device, and an electrochemical device including the electrolyte solution. The electrolyte solution contains a compound represented by formula (1-1): wherein Rto Rare each individually a C1-C4 linear alkyl group, and wherein the compound (1-1) is present in an amount of 0.01-1000 mass ppm relative to the electrolyte solution.

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

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

An electrolyte solution containing at least one compound (1) selected from a compound represented by the following formula (1-1) and a compound represented by the following formula (1-2), the formula (1-1) being: wherein Rto Rare each individually a C1-C4 linear alkyl group, the formula (1-2) being: wherein Rto Rare each individually a C1-C4 linear alkyl group.

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

An electrolyte solution containing a compound represented by the following formula (1). In the formula, Rand Rare each individually a substituent such as a C1-C7 alkyl group, the substituent optionally contains at least one divalent to hexavalent hetero atom in a structure or optionally has a structure obtained by replacing at least one hydrogen atom by a fluorine atom or a C0-C7 functional group, and at least one selected from the group consisting of Rand Rwhen both being an alkyl group, contains at least one divalent to hexavalent hetero atom in the structure or has a structure obtained by replacing at least one hydrogen atom by a fluorine atom or a C0-C7 functional group:

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

An electrolyte solution for a lithium ion secondary battery, including a compound (1) represented by the following formula (1): wherein Rand Rare each independently a methyl, ethyl, propyl, or butyl group. Also disclosed is a lithium ion secondary battery including the electrolyte solution and a module including the lithium ion secondary battery.

Electrolytic solution for lithium-ion secondary battery, lithium-ion secondary battery, and module

An electrolyte solution containing at least one compound (1) selected from the group consisting of a compound represented by the following formula (1-1) (wherein Rto Rare each individually a C1-C4 linear or branched alkyl group, and at least one selected from Rto Ris a C1-C4 branched alkyl group) and a compound represented by the following formula (1-2) (wherein Rto Rare each individually a C1-C4 linear or branched alkyl group, and at least one selected from Rto Ris a C1-C4 branched alkyl group). Also disclosed is an electrochemical device including the electrolyte solution, a lithium ion secondary battery including the electrolyte solution and a module including the electrochemical device or lithium ion secondary battery:

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

An electrolyte solution containing LiFSOand a compound (1) represented by the following formula (1): LiZ, wherein Z is PF, BF, N(FSO), N(CFSO), N(CFSO), POF, or B(CO). The electrolyte solution has a ratio [FSO]/[Z] of a molar content of FSO[FSO] to a molar content of Z [Z] of 3 to 1000. Also disclosed is an electrochemical device including the electrolyte solution, a lithium ion secondary battery including the electrolyte solution and a module including the electrochemical device.

An electrolyte solution containing a compound represented by formula (1) and a compound represented, for example, by formula (11-1), the formula (1) being: wherein Mis P or P═O; Ris a group such as a C1-C11 alkylsilyloxy group; n101 is an oxidation number of Mminus 1 or an oxidation number of Mminus 3; and Rto Rare each individually a group such as a C1-C11 alkyl group; the formula (11-1) being: wherein Rand Rare the same as or different from each other and are each an atom or group such as a hydrogen atom; and Ris a group such as an alkyl group free from a fluorine atom.

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

An electrolyte solution containing a compound (1) represented by the formula (1), (wherein Rand Rare each individually a substituent such as a C1-C7 alkyl group, and the substituent optionally contains at least one divalent to hexavalent hetero atom in a structure or optionally has a structure obtained by replacing at least one hydrogen atom by a fluorine atom or a C0-C7 functional group) and at least one compound (11) selected from compounds such as a compound represented by formula (11-1) (wherein Rand Rare the same as or different from each other and are each a hydrogen atom or the like, and Ris an alkyl group free from a fluorine atom or the like):

An electrolyte solution containing at least one selected from a compound (I) represented by the following formula (I) and specific compounds (II). The formula (I) is as follows: wherein Ris a C2-C6 alkyl group. Also disclosed are a secondary battery containing the electrolyte solution and a module including the electrochemical device or the secondary battery.

Electrolytic solution, electrochemical device, secondary cell, and module

The invention provides an electrolyte solution capable of providing an electrochemical device having low resistance and excellent high-temperature storage characteristics and cycle characteristics. The electrolyte solution contains lithium fluorosulfonate and a solvent containing a compound (1) represented by the following formula (1): CFHCOOCH.

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

The disclosure provides an electrolyte solution that enables a lithium ion secondary battery to have reduced initial resistance, a small increase in resistance at high-temperature cycles, and reduced gas generation at high temperature. The electrolyte solution for a lithium ion secondary battery contains lithium difluorophosphate, an oxalic acid ion, and a compound (1) represented by the following formula (1): wherein Rand Rare each independently a methyl group, an ethyl group, a propyl group, or a butyl group.

Electrolyte for lithium ion secondary battery, lithium ion secondary battery, and module

An electrolyte solution contains tris(trimethylsilyl) phosphite and at least one fluorinated saturated cyclic carbonate (1) selected from pentafluoropropylethylene carbonate and heptafluoroisobutylethylene carbonate. Also disclosed is an electrochemical device including the electrolyte solution.

Growing community of inventors

Osaka, Japan

Tomoya Hidaka