Wako Pure Chemical Industries, Inc.

Fujifilm Wako Pure Chemical Corporation

Tokyo University of Science Foundation

Other

Japan Science and Technology Agency

Fuji Photo Film Company, Limited

Kuniaki Okamoto

Tsutomu Watahiki

Motoshige Sumino

Takahiro Kiyosu

Kazuhiko Sato

Goro Mori

Shinichi Komaba

Atsunori Sano

Hiromi Watahiki

Shu Kobayashi

Tsuneaki Maesawa

Hironori Mizuta

Naoaki Yabuuchi

Takeo Sasaki

Nobutaka Shimamura

Shota Hashimoto

Ayako Kuramoto

Takatoshi Matsuura

Zhen-ji Han

Kouki Ohkubo

Tatsuko Ikeda

Yoshio Inagaki

Takehiko Kitamori

Yuichiro Mori

Ryo Akiyama

Yasuyoshi Mori

Mutsumi Sato

Shoko Aoki

Kazuki Takimoto

Masaharu Ueno

Keiji Ohno

Tomimasa Kurita

Jun Ebashi

Michihiko Sato

Kaho Sugimoto

Kiyofumi Yamagiwa

Takao Shibasaki

Zhen-Ji Han

An object of the present invention is to provide an excellent binder agent composition solving problems such as the decrease in a charge/discharge capacity that occurs in a case where a silicon-containing active material is used, a slurry composition and an electrode in which the binder agent composition is used, and a method for preparing the electrode. The present invention relates to 'a binder agent composition containing (A) one or more kinds of polymers containing polyacrylic acid, (B) a bivalent to decavalent alcohol, and (C) water', 'a slurry composition for lithium batteries, containing 1) a silicon-containing active material, 2) a conductive assistant, and 3) the binder agent composition', &#x201c;an electrode for lithium batteries that has 1) a silicon-containing active material, 2) a conductive assistant, 3) a binder agent derived from the binder agent composition, and 4) a current collector&#x201d;, and &#x201c;a method for preparing an electrode for lithium batteries, including coating a current collector with the slurry composition and drying the slurry composition after the coating&#x201d;.

Binder agent composition for lithium battery

It is an object of the present invention to provide an electrode capable of maintaining superior capacity retention without destruction of an electrode structure, even in the case of using an active material including silicon. The present invention relates to 'a binder for a lithium cell, the binder comprising polyacrylic acid cross-linked by a cross-linking agent selected from the compounds described in the general formulae [1] to [13] and the polymer described in the general formula [14] (provided that the one which includes a functional group-containing vinylidene fluoride-based polymer is excluded)'; a 'composition for producing an electrode of a lithium cell, the composition comprising 1) an active material containing silicon, 2) a conductive assistant and 3) a cross-linked-type polyacrylic acid (provided that the one containing a functional group-containing vinylidene fluoride-based polymer is excluded)'; and an &#x201c;electrode for a lithium cell, the electrode comprising 1) an active material containing silicon, 2) a conductive assistant, 3) a cross-linked-type polyacrylic acid, and 4) a current collector (provided that the one containing a functional group-containing vinylidene fluoride-based polymer is excluded)&#x201d;.

Binder for lithium cell, composition for producing electrode, and electrode

The present invention relates to an electrolytic solution for a magnesium battery, formed by mixing a compound represented by the following general formula (I), a Lewis acid or a compound represented by the following general formula (A), and a solvent; and the like.  {In the formula, m represents 0 or 2, n represents 2 in a case of m=0 and represents 0 or 1 in a case of m=2, Xrepresents a chlorine atom or a bromine atom, and two R's each independently represent a magnesium chloride oxy group; a magnesium bromide oxy group; an alkyl group which may have a halogeno group or the like as a substituent; an alkoxy group; an aryl group which may have an alkoxy group or the like as a substituent; an aryloxy group which may have an alkoxy group or the like as a substituent; or a group represented by the following general formula (1), and two R's may also form the following general formula (2).}  (In the formula, four R's each independently represent an alkyl group, a perfluoroalkyl group, a phenyl group, or a perfluorophenyl group.)

Phosphorus electrolytic solution containing magnesium ions

It is an object of the present invention to provide an electrode having superior charge-discharge capacity, even in the case of using an active material containing silicon. The present invention relates to 'a binder for a lithium cell comprises a polymer having a monomer unit derived from acrylic acid, and 1 to 2 kinds of monomer units derived from the compound shown by the general formula (I), the general formula (II), or the general formula (III), as constituents, and cross-linked by a cross-linking agent selected from the compounds described by the following general formulae [1] to [13], and the polymer described by the following general formula [14]', 'a composition for producing an electrode of a lithium cell comprising 1) an active material containing silicon, 2) a conductive assistant, and 3) the above-described binder for a cell', and &#x201c;an electrode for a lithium cell having 1) an active material containing silicon, 2) a conductive assistant, 3) the above-described binder for a cell, and (4) a current collector&#x201d;.

Binder for lithium cell

An object of the present invention is to provide a highly practical electrolytic solution which has a high oxidative decomposition potential, enables the dissolution and precipitation of magnesium to stably repeatedly proceed, and is easy to prepare. The present invention relates to an electrolytic solution for a magnesium battery comprising: a compound represented by the general formula (I), a Lewis acid or a compound represented by the general formula (A), and a solvent; and to the compound represented by the general formula (I). In the formula (I), two X's each independently represent a halogeno group, and Rrepresents an alkyl group having 1 to 6 carbon atoms; an alkoxy group having 1 to 6 carbon atoms; a phenoxy group; a &#x2014;OMgX group (X is the same as X described above); an aryl group having 6 to 18 carbon atoms which has, as a substituent, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a vinyl group, a phenyl group, a phenoxy group, a halogeno group or a &#x2014;B(OMgX)group (X is the same as X described above) or is unsubstituted; or a monocyclic or bicyclic heterocyclic group which has, as a substituent, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a vinyl group, a phenyl group, a phenoxy group, a halogeno group, or a &#x2014;B(OMgX)group (X is the same as X described above) or is unsubstituted. In the general formula (A), four R's each independently represent an alkyl group having 1 to 6 carbon atoms, a perfluoroalkyl group having 1 to 6 carbon atoms, a phenyl group, or a perfluorophenyl group.

Electrolyte solution containing magnesium ions

It is an object of the present invention to provide an electrochemical device having an electrolytic solution having high current density, as well as high safety, where dissolution and deposition of magnesium progress repeatedly and stably. Furthermore, the present invention relates to an electrolytic solution for an electrochemical device, comprising (1) a supporting electrolyte comprising a magnesium salt, and (2) at least one or more kinds of the compound represented by following general formula (I) (wherein n represents an integer of 0 to 6, and n pieces of Rand n pieces of Reach independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a halogenoalkyl group having 1 to 6 carbon atoms. Aand Aeach independently represent &#x2014;C(&#x2550;O)&#x2014;R, &#x2014;O&#x2014;R, &#x2014;N(R)&#x2014;R, &#x2014;S&#x2014;R, &#x2014;C(&#x2550;O)&#x2014;OR, &#x2014;O&#x2014;C(&#x2550;O)&#x2014;R, &#x2014;C(&#x2550;O)&#x2014;N(R)&#x2014;R, &#x2014;N(R)&#x2014;C(&#x2550;O)&#x2014;R, &#x2014;SO&#x2014;R, &#x2014;N(R)&#x2014;SO&#x2014;R, &#x2014;O&#x2014;B(OR), &#x2014;O&#x2014;P(&#x2550;O)(OR), &#x2014;CN, a monocyclic heterocyclic group, a group derived from cyclic acetal, a group derived from a cyclic carbonate ester, a group derived from a cyclic carboxylate ester).

Electrolyte solution for electrochemical device, and electrochemical device

It is an object of the present invention to provide an electrolytic solution having high oxidation decomposition potential, where dissolution and deposition of magnesium proceed repeatedly and stably, using a non-nucleophilic alkoxide-type magnesium salt. The present invention relates to  

Magnesium-containing electrolytic solution

It is an object of the present invention to provide an electrode capable of maintaining superior capacity retention without destruction of an electrode structure, even in the case of using an active material including silicon. The present invention relates to 'a binder for a lithium cell, the binder comprising polyacrylic acid cross-liked by a cross-linking agent selected from the compounds described in the general formulae [1] to [13] and the polymer described in the general formula [14] (provided that the one which includes a functional group-containing vinylidene fluoride-based polymer is excluded)'; a 'composition for producing an electrode of a lithium cell, the composition comprising 1) an active material containing silicon, 2) a conductive assistant and 3) a cross-linked-type polyacrylic acid (provided that the one containing a functional group-containing vinylidene fluoride-based polymer is excluded)'; and an &#x201c;electrode for a lithium cell, the electrode comprising 1) an active material containing silicon, 2) a conductive assistant, 3) a cross-linked-type polyacrylic acid, and 4) a current collector (provided that the one containing a functional group-containing vinylidene fluoride-based polymer is excluded)&#x201d;.

It is an object of the present invention to provide an electrochemical device having an electrolytic solution having high current density and high oxidation resistance, as well as high safety, where dissolution and deposition of magnesium progress repeatedly and stably. The present invention relates to the electrolytic solution for an electrochemical device comprising (1) the supporting electrolyte composed of a magnesium salt and (2) at least one or more kinds of the compound represented by the following general formula [2], as well as the electrochemical device comprising said electrolytic solution, a positive electrode, a negative electrode and a separator. 

Electrolyte solution for electrochemical devices

The present invention provides a non-aqueous electrolytic solution including a methylenebissulfonate derivative and improving initial irreversible capacity and other characteristics of a battery such as a cycle characteristics, electric capacity, and storage characteristics; a method for producing thereof; and a battery using the electrolytic solution. The non-aqueous electrolytic solution includes: (1) a non-aqueous solvent comprising at least one selected from a cyclic carbonate ester, a straight chained carbonate ester and/or a cyclic carboxylic acid ester, (2) a lithium salt which may be dissolved in the non-aqueous solvent, as an electrolyte salt, and (3) a methylenebissulfonate derivative of formula [1]:  The method includes steps of dissolving a lithium salt in a non-aqueous solvent, and then dissolving the methylenebissulfonate derivative. The non-aqueous electrolytic solution battery includes (i) the non-aqueous electrolytic solution, (ii) a negative electrode, (iii) a positive electrode, and (iv) a separator.

Nonaqueous electrolyte solution and nonaqueous electrolyte battery using same

The present invention provides a non-aqueous electrolytic solution including a methylenebissulfonate derivative and improving initial irreversible capacity and other characteristics of a battery such as cycle characteristics, electric capacity, and storage characteristics; a method for producing thereof; and a battery using the electrolytic solution. The non-aqueous electrolytic solution includes: (1) a non-aqueous solvent comprising a cyclic carbonate ester, a straight chained carbonate ester, and/or a cyclic carboxylic acid ester, (2) a lithium salt which may be dissolved in the non-aqueous solvent, as an electrolyte salt, and (3) a methylenebissulfonate derivative of formula [I]: The method includes steps of dissolving a lithium salt in a non-aqueous solvent, and then dissolving the methylenebissulfonate derivative. The non-aqueous electrolytic solution battery includes (i) the non-aqueous electrolytic solution above, (ii) a negative electrode, (iii) a positive electrode, and (iv) a separator.

Nonaqueous electrolyte solution, method for producing same, and nonaqueous electrolyte battery using the electrolyte solution

The present invention is directed to provide an efficient production method which is capable of not only obtaining a cyclic sulfonic acid ester (sultone) at low cost and in high yield, but also the sulfonic acid ester (sultone) stably even in a commercial scale. The present invention relates to a method for producing hydroxysultone comprising a first step where a diol having a specified structure and a thionyl halide are reacted to obtain a cyclic sulfite having a specified structure, and a second step where the cyclic sulfite is reacted with water or/and alcohol; a method for producing an unsaturated sultone having a specified structure comprising a third step where a hydroxylsultone having a specified structure is reacted with an acid halide or an acid anhydride to obtain an intermediate, subsequently the intermediate is treated with a base; as well as a cyclic sulfite having a specified structure.

Method for producing cyclic sulfonic acid ester and intermediate thereof

It is an object of the present invention to provide a commercially advantageous method for producing a cyclic disulfonic acid ester with high yield, the present invention discloses a method for producing a cyclic disulfonic acid ester represented by the general formula (3), which comprises reacting a silver alkanedisulfonate represented by the general formula (1) with a dihaloalkane represented by the general formula (2) in a nonpolar solvent.  Wherein Xand Xare each independently a chlorine atom, a bromine atom or an iodine atom; and Y and Z are each independently a substituted or unsubstituted alkylene chain which may have a heteroatom in the chain.

Method for producing cyclic disulfonic acid ester

Object To provide a method for producing a bis-quaternary ammonium salt efficiently and a novel synthetic intermediate thereof. Solution The present invention relates to a method for producing a bis-quaternary ammonium salt represented by a general formula [3] which comprises reacting a disulfonic acid ester represented by a general formula [1] (in the formula, definitions of two R's and T are as described in claim) with a tertiary amine represented by a general formula [2] (in the formula, definitions of Rto Rare as described in claim), and a disulfonic acid ester represented by a general formula [1'] (in the formula, two R's represent independently a halogen atom or a C1-C3 fluoroalkyl group, and two m's represent independently an integer of 1 to 5). 

Process for production of bis-quaternary ammonium salt, and novel intermediate

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Kawagoe, Japan

Kuniaki Okamoto