Mitsubishi Chemical Corporation

Daikin Industries, Ltd.

Toyota Jidosha Kabushiki Kaisha

Diafoil Hoechst Company, Limited

Mu Ionic Solutions Corporation

Panasonic Corporation

Mitsubishi Polyester Film Gmbh

The School Corporation Kansai University

Shinichi Kinoshita

Minoru Kotato

Shigeaki Yamazaki

Takashi Fujii

Hideo Sakata

Youichi Ohashi

Hiroyuki Arima

Hiroyuki Tokuda

Noriko Shima

Masamichi Onuki

Kenzou Takahashi

Masahiro Takehara

Yoshiko Kuwajima

Akinori Tani

Toshiyuki Kawai

Mayuko Taeda

Akiyoshi Yamauchi

Masakazu Kinoshita

Meiten Koh

Yoshiaki Honda

Kunihisa Shima

Yoshinori Sato

Hiroshi Yoshizawa

Satoshi Uchida

Takeshi Abe

Atsushi Ueda

Tooru Matsui

Masaki Deguchi

Hitoshi Suzuki

Makoto Ue

Martin Winter

Tomo Shimada

Michiaki Okada

Atsushi Maruo

Daisuke Noda

Hiroto Asano

Teppei Yamada

Isao Konno

Yumiko Nakagawa

Ryoichi Kato

Shinya Takano

Toshirou Miura

Mayuko Takano

Tomoya Hidaka

Takafumi Oura

Takaharu Morikawa

Narihiro Masuda

Aoi Nakazono

Hitoshi Matsumoto

Michiru Kagawa

Michael Sternad

Hidemi Yoshida

Masashi Ishikawa

Kenichi Uchino

Takamichi Mitsui

Asao Kominato

Hitomi Miyawaki

Shinpei Kondo

Yoshio Meguro

Masaki Yamagata

Tomoo Shimada

Hideharu Satou

Yuya Torii

Takashi Fuji

A non-aqueous liquid electrolyte secondary battery using negative-electrode active material having Si, Sn and/or Pb, with high charge-capacity, superior characteristics including discharge-capacity retention rate over long is provided. Its non-aqueous liquid electrolyte contains carbonate having unsaturated bond and/or halogen and compounds like LiPFand/or LiBF(first lithium salt) and lithium salt different from said first one, represented by formula below (second lithium salt).Li(αX)

Non-aqueous liquid electrolyte and non-aqueous liquid electrolyte secondary battery

The present invention provides an electrolytic solution capable of providing an electrochemical device, such as a lithium ion secondary battery, or a module that has excellent high-temperature storage performance. The electrolytic solution contains: a homocyclic compound other than aromatic compounds; and a cyclic dicarbonyl compound. The homocyclic compound contains at least one group selected from the group consisting of a nitrile group and an isocyanate group.

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

An electrolyte solution for an alkali metal-sulfur-based secondary battery, an alkali metal-sulfur-based secondary battery, and a module containing the alkali metal-sulfur-based secondary battery. The electrolyte solution includes a positive electrode containing a carbon composite material that contains a carbon material and a sulfur-containing positive electrode active material. The carbon material has a pore volume ratio (micropores/mesopores) of 1.5 or higher. The electrolyte solution contains a fluorinated ether represented by the following formula (1): R—(OR)—O—R. In the formula, Rand Rare the same as or different from each other, and are each an alkyl group optionally containing a fluorine atom, with at least one of Ror Rcontaining a fluorine atom; Ris an alkylene group optionally containing a fluorine atom; and n11 is 0, 1, or 2.

Electrolyte solution for alkali metal-sulfur-based secondary battery, and alkali metal-sulfur-based secondary battery

An electrochemical device which is an alkali metal battery or an alkaline earth metal battery, wherein only a positive electrode is an electrode having a perfluoropolyether group-containing compound in a surface thereof.

Electrode and electrochemical device

An object is to provide a nonaqueous electrolyte and a nonaqueous-electrolyte secondary battery which have excellent discharge load characteristics and are excellent in high-temperature storability, cycle characteristics, high capacity, continuous-charge characteristics, storability, gas evolution inhibition during continuous charge, high-current-density charge/discharge characteristics, discharge load characteristics, etc. The object has been accomplished with a nonaqueous electrolyte which comprises: a monofluorophosphate and/or a difluorophosphate; and further a compound having a specific chemical structure or specific properties.

Nonaqueous electrolyte for secondary battery and nonaqueous-electrolyte secondary battery employing the same

An electrolyte solution for an electrochemical device, such as a lithium secondary battery, or module. The electrolyte solution contains: a solvent that contains a fluorinated acyclic carbonate having a fluorine content of 33 to 70 mass %; at least one organosilicon compound selected from a compound represented by the formula (1): (R)&#x2014;M&#x2014;O&#x2014;SiRRRand a compound represented by the formula (2): RRR&#x2014;Si&#x2014;F; a lithium salt (3) that contains an oxalato-complex as an anion; and a lithium salt (4) represented by the formula (4): LiMFO, where R, M, R, R, R, R, R, Rand Mare as defined herein.

Electrolyte solution, electrochemical device, secondary battery, and module

A non-aqueous liquid electrolyte secondary battery using negative-electrode active material having Si, Sn and/or Pb, with high charge-capacity, superior characteristics including discharge-capacity retention rate over long is provided. Its non-aqueous liquid electrolyte contains carbonate having unsaturated bond and/or halogen and compounds like LiPFand/or LiBF(first lithium salt) and lithium salt different from said first one, represented by formula below (second lithium salt).Li(&#x3b1;X)(In the formula, l, m and n represent integers of 1 to 10, 1 to 100 and 1 to 200, respectively. &#x3b1; represents boron, carbon, nitrogen, oxygen or phosphorus. Xrepresents functional group having atom selected from 14th to 17th groups of periodic table at its binding-position to &#x3b1;. Two or more of Xmay be connected to each other to form a ring structure. However, such a case where a is boron and Xis compound represented by(CHO)(CHO)is omitted (i and j represent integers of 2 or larger.).

The present invention provides a novel electrolyte solution capable of providing electrochemical devices whose internal resistance is less likely to increase even after repeated charge and discharge and whose cycle capacity retention ratio is high. The electrolyte solution of the present invention contains a solvent, an electrolyte salt, and at least one selected from the group consisting of compounds represented by RX&#x2014;SOMand compounds represented by RRN&#x2014;SOMin an amount of 0.001 to 10 mass % relative to the solvent.

Electrolyte solution and method for producing sulfate salt

The present invention relates to an electrode having a perfluoropolyether group-containing compound in a surface thereof.

An electrolyte solution applicable to high-voltage electrochemical devices and capable of improving the cycle characteristics of electrochemical devices even at high voltage, and an electrochemical device. The electrolyte solution contains a fluorinated diether and a metal salt having a specific structure. The fluorinated diether is represented by CFRR&#x2014;O&#x2014;CHCH&#x2014;O&#x2014;R, wherein Rand Rare each individually H, CH, F, CHF, CHF, or CF; and Ris a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group.

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

An electrolyte solution whose residual capacity is less likely to decrease and whose percentage increase in resistance is less likely to change even after stored at high temperature. The electrolyte solution contains a compound (1) represented by the following formula (1):RCFX(CH)COORwherein Ris H, F, a C1-C3 non-fluorinated alkyl group, or a C1-C3 fluorinated alkyl group; Xis H or F; Ris a C1-C3 non-fluorinated alkyl group or a C1-C3 fluorinated alkyl group; and n11 is an integer of 0 to 3; a fluorinated carbonate; and a specific additive.

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

The present disclosure provides a nonaqueous electrolyte solution that is used in a nonaqueous electrolyte secondary battery. The nonaqueous electrolyte solution contains a fluorinated solvent, a predetermined additive A and a predetermined additive B. A ratio (C/C) of concentration C(mol/L) of the additive A and concentration C(mol/L) of the additive B lies in a range of 1 to 30.

Nonaqueous electrolyte solution and method for producing nonaqueous electrolyte secondary battery

An electrolyte solution applicable to high-voltage electrochemical devices and capable of improving the cycle characteristics of electrochemical devices even at high voltage. The electrolyte solution contains a fluorinated acyclic carbonate and a metal salt having a specific structure. The fluorinated acyclic carbonate is represented by CF&#x2014;OCOO&#x2014;R(wherein Ris a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group) or CFH&#x2014;OCOO&#x2014;R(wherein Ris a C1 or C2 non-fluorinated alkyl group or a C1 or C2 fluorinated alkyl group).

A nonaqueous electrolyte solution used for a nonaqueous electrolyte secondary battery includes a cyclic carbonate and a fluorinated carboxylate ester including two fluorine atoms on an alpha carbon atom derived from a carboxylic acid as a nonaqueous solvent.

Nonaqueous electrolyte solution, nonaqueous electrolyte secondary battery, and method of producing nonaqueous electrolyte secondary battery

Growing community of inventors

Ibaraki, Japan

Shinichi Kinoshita