Central Glass Company, Limited

Takayoshi Morinaka

Mikihiro Takahashi

Wataru Kawabata

Makoto Kubo

Hiroki Matsuzaki

Kenta Yamamoto

Takashi Mori

Takashi Kume

Masutaka Shinmen

Shoichi Tsujioka

Susumu Iwasaki

Natsuya Nishimura

Toru Tanaka

Hiromi Kawamoto

Keita Nakahara

Ryosuke Terada

Tsutomu Nanmyo

Keiji Sato

Takashi Kashiwaba

Yuki Kondo

Masataka Fujimoto

Shigenori Sakai

Susumu Inoue

Ryota Esaki

Ryosuke Kondo

Masahiro Miura

Tetsu Taroura

Katsumasa Mori

Yuta Ikeda

Miyuki Yamauchi

Matsuzaki Hiroki

Satoshi Muramoto

Kei Kawahara

Takahiro Tanigawa

Provided is a nonaqueous electrolytic solution containing a nonaqueous organic solvent, a solute, a specific silicon compound (A), a specific borate (B), and a specific imide salt (C), in which W/W, which is a ratio of a content Wof the borate (B) based on mass to a content Wof the silicon compound (A) based on mass, is 1.5 or more and 3 or less, and W/W, which is a ratio of a content Wof the imide salt (C) based on mass to a content Wof the silicon compound (A) based on mass, is 1 or more and 5 or less, and the nonaqueous electrolytic solution can exhibit an effect of reducing an absolute value of internal resistance at a low temperature and an effect of improving a battery capacity after a cycle test in a well-balanced manner.

Nonaqueous electrolytic solution

The present invention provides: a nonaqueous electrolyte solution which is used in a nonaqueous electrolyte battery having a low initial resistance value; and a compound which is contained in this nonaqueous electrolyte solution. A nonaqueous electrolyte solution according to the present invention contains a compound represented by formula (1), a solute and a nonaqueous organic solvent. In general formula (1), each of Rand Rrepresents PO(R)or SOR, and Rf represents, for example, a fluorine atom; each of Rand Rrepresents, for example, a lithium ion, or alternatively Rand Rmay form a ring structure together with a nitrogen atom to which the moieties are bonded, and in this case, Rand Rform an alkylene group in combination with each other; an oxygen atom may be contained between carbon atom-carbon atom bonds in the alkylene group; a side chain thereof may have an alkyl group; and an arbitrary hydrogen atom in the alkyl group and the alkylene group may be substituted by a fluorine atom.

Nonaqueous electrolyte solution, nonaqueous electrolyte battery and compound

An additive for a non-aqueous electrolyte solution that can exhibit high-temperature cycle properties at 50&#xb0; C. or more and low-temperature output properties at &#x2212;20&#xb0; C. or less in a well-balanced manner for a non-aqueous electrolyte solution battery. The additive for a non-aqueous electrolyte solution is represented by formula [1], wherein Z, Z, Z, Z, Mand p are as defined in the specification.

Additive for non-aqueous electrolyte solution, non-aqueous electrolyte solution, and non-aqueous electrolyte solution battery

The present invention provides an electrolyte solution for a non-aqueous electrolyte solution battery capable of exhibiting excellent high-temperature cycle characteristics and excellent high-temperature storage characteristics at high temperature of 60&#xb0; C. or above, and a non-aqueous electrolyte solution battery using the same. The electrolyte solution for a non-aqueous electrolyte solution battery of the present invention comprises at least: a non-aqueous solvent; a solute; at least one first compound represented by the following general formula (1); and at least one second compound represented by the following general formula (2). 

Electrolyte solution for non-aqueous electrolytic solution battery and non-aqueous electrolyte solution battery using same

An additive for a non-aqueous electrolyte solution that can suppress the initial gas generation amount when used in a non-aqueous electrolyte solution battery. The additive for a non-aqueous electrolyte solution is represented by any one of formulae [1] to [4]: 

Additive for non-aqueous electrolyte solution, electrolyte solution for non-aqueous electrolyte solution battery, and non-aqueous electrolyte solution battery

Provided are an electrolyte for a non-aqueous electrolyte battery using a positive electrode including nickel, where the battery generates a small amount of gas during a durability test even if the cell potential reaches 4.1 V or more, as well as a non-aqueous electrolyte battery using the electrolyte. In the electrolyte for a non-aqueous electrolyte battery including a positive electrode including at least one selected from the group consisting of oxides containing nickel and phosphates containing nickel as a positive electrode active material, the electrolyte comprises (I) a non-aqueous organic solvent, (II) a fluorine-containing solute being an ionic salt, (III) at least one additive selected from the group consisting of compounds represented by formulae (1) and (2), and (IV) hydrogen fluoride in an amount of 5 mass ppm or more and less than 200 mass ppm based on the total amount of the components (I), (II), and (III). 

Electrolyte for non-aqueous electrolyte battery and non-aqueous electrolyte battery using the same

Provided is an electrolyte for a non-aqueous electrolyte battery, which can provide, when used in a non-aqueous electrolyte battery, in a good balance, an effect to suppress an increase in an internal resistance at a low temperature and an effect to suppress an increase in an amount of gas generated at a high temperature, as well as a non-aqueous electrolyte battery containing such an % electrolyte. The non-aqueous electrolyte comprises a non-aqueous solvent and at least a hexafluorophosphate and/or tetrafluoroborate as a solute, and further comprises at least one imide anion-containing salt represented by the following general formula [1] but does not contain a silane compound represented by the following general formula [2] or an ionic complex represented by, for example, the following general formula [3]. 

Electrolyte for non-aqueous electrolyte cell, and non-aqueous electrolyte cell wherein same is used

An electrolytic solution for a nonaqueous electrolyte battery according to the present invention includes: (I) at least one kind of silane compound represented by the following general formula (1); (II) at least one kind selected from the group consisting of a cyclic sulfonic acid compound and a cyclic sulfuric ester compound; (III) a nonaqueous organic solvent; and (IV) a solute. The nonaqueous electrolyte battery with this electrolytic solution achieves a good balance between improvement of high-temperature storage characteristics under high-temperature conditions of 70&#xb0; C. or higher and reduction of gas generation during high-temperature storage.Si(R)(R)&#x2003;&#x2003;(1) In the general formula (1), Ris each independently a carbon-carbon unsaturated bond-containing group; Ris each independently selected from a fluorine group and a C-Clinear or C-Cbranched alkyl group which may have a fluorine atom and/or an oxygen atom; and x is an integer of 2 to 4.

Electrolytic solution for nonaqueous electrolytic solution battery, and nonaqueous electrolytic solution battery using same

To provide a method for producing a phosphoryl imide salt represented by the following general formula (1) at a satisfactory yield by cation exchange. The method comprises the step of performing cation exchange by bringing a phosphoryl imide salt represented by the following general formula (2) into contact with a cation exchange resin having Mor a metal salt represented by the general formula (4) in an organic solvent having a water content of 0.3% by mass or less. 

Method for producing phosphoryl imide salt, method for producing nonaqueous electrolyte solution containing said salt, and method for producing nonaqueous secondary battery

The present invention provides an electrolyte solution for a non-aqueous electrolyte battery capable of an exerting high average discharge voltage and an excellent low-temperature output characteristic at &#x2212;30&#xb0; C. or lower and an excellent cycle characteristic and an excellent storage characteristic at high temperatures of 50&#xb0; C. or higher, as well as a non-aqueous electrolyte battery containing the same. The present electrolyte solution comprises a non-aqueous solvent, a solute, at least one silane compound represented by the following general formula (1) as a first compound, and a fluorine-containing compound represented by the following general formula (3), for example, as a second compound.Si(R)(R)&#x2003;&#x2003;(1) 

Electrolyte solution for non-aqueous electrolyte battery, and non-aqueous electrolyte battery using the same

The present invention provides an electrolyte solution for a non-aqueous electrolyte battery capable of an exerting high average discharge voltage and an excellent low-temperature output characteristic at &#x2212;30&#xb0; C. or lower and an excellent cycle characteristic and an excellent storage characteristic at high temperatures of 50&#xb0; C. or higher, as well as a non-aqueous electrolyte battery containing the same. The present electrolyte solution comprises anon-aqueous solvent, a solute, at least one silane compound represented by the following general formula (1) as a first compound, and a fluorine-containing compound represented by the following general formula (3), for example, as a second compound. 

Provided is an electrolyte for a non-aqueous electrolyte battery, which can provide, when used in a non-aqueous electrolyte battery, in a good balance, an effect to suppress an increase in an internal resistance at a low temperature and an effect to suppress an increase in an amount of gas generated at a high temperature, as well as a non-aqueous electrolyte battery containing such an electrolyte. The non-aqueous electrolyte comprises a non-aqueous solvent and at least a hexafluorophosphate and/or tetrafluoroborate as a solute, and further comprises at least one imide anion-containing salt represented by the following general formula [1] but does not contain a silane compound represented by the following general formula [2] or an ionic complex represented by, for example, the following general formula [3]. 

Disclosed is an electrolyte for nonaqueous electrolyte cells, which contains a nonaqueous organic solvent and a solute. This electrolyte is characterized by containing as additives at least one compound selected from a first compound group consisting of bis(oxalato)borate, difluoro(oxalato)borate, tris(oxalato)phosphate, difluorobis(oxalato)phosphate, and tetrafluoro(oxalato)phosphate, and at least one compound selected from a second compound group consisting of a sulfonate group-containing imide salt, which is represented by the general formula M[ROSONSOOR], and a phosphoryl group-containing imide salt, which is represented by the general formula M[RROPNPORR]. This electrolyte provides nonaqueous electrolyte cells with high-temperature durability without causing swelling and performance deterioration of batteries.

Growing community of inventors

Ube, Japan

Takayoshi Morinaka