Mitsubishi Chemical Corporation

Mu Ionic Solutions Corporation

Sanyo Electric Co., Ltd.

Panasonic Corporation

A&t Battery Corporation

Minoru Kotato

Shinichi Kinoshita

Masamichi Onuki

Hiroyuki Tokuda

Kunihisa Shima

Takashi Fujii

Youichi Ohashi

Shuhei Sawa

Yasuyuki Shigematsu

Hitoshi Suzuki

Masahiro Takehara

Kanako Takiguchi

Noriko Shima

Ryoichi Kato

Daisuke Noda

Takayuki Aoshima

Tsuyoshi Inoue

Eiji Nakazawa

Isao Konno

Yumiko Nakagawa

Maruo Kamino

Taizou Sunano

Kouhei Tuduki

Hitoshi Matsumoto

Tomohiro Sato

Hidekazu Yamamoto

Hiroaki Yoshida

Asao Kominato

Takamichi Mitsui

Yoichi Oohashi

Takahiro Yamamoto

Kazuki Watanabe

Hideharu Sato

Atsushi Ueda

Akira Yajima

Makoto Ue

Ryo Yamaguchi

Shoichiro Mori

Takafumi Oura

Takaharu Morikawa

Tooru Fuse

Norioki Mine

Koji Fukamizu

Hidekazu Miyagi

Akemi Hosokawa

Hiroyuki Uono

Masakazu Yokomizo

Youichi Oohashi

Teppei Yamada

Takayuki Nakajima

Hiroyuki Oshima

Tomohiro Satou

Hideharu Satou

Toshimitsu Kato

Marc Deshamps

Hitoshi Ota

Takashi Fuji

An object is to provide a non-aqueous electrolyte solution that can improve the capacity deterioration and gas generation associated with the high-temperature storage of non-aqueous electrolyte batteries. A further object is to provide a non-aqueous electrolyte battery that uses this non-aqueous electrolyte solution. These objects can be achieved by using a non-aqueous electrolyte solution that incorporates, in prescribed contents, (A) a compound having at least two isocyanate groups per molecule and (B) a compound of formula (3):LiCFSO  (3)

Non-aqueous electrolyte solution and non-aqueous electrolyte secondary battery employing the same

A nonaqueous electrolyte solution, which contains a compound represented by the following general formula (A), and (1) at least one compound selected from the group consisting of a nitrile compound, an isocyanate compound, a difluorophosphate, a fluorosulfonate, a lithium bis(fluorosulfonyl)imide and a compound represented by the following general formula (B), or (2) a cyclic carbonate compound having a fluorine atom in an amount of 0.01% by mass to 50.0% by mass based on the total amount of the nonaqueous electrolyte solution. (In formula (A), Rto Rmay be mutually the same or different and represent optionally substituted organic groups having 1 to 20 carbon atoms.) (In formula (B), R, Rand Rrespectively and independently represent an alkyl group, alkenyl group or alkynyl group having 1 to 12 carbon atoms that may be substituted with a halogen atom, and n represents an integer of 0 to 6.

Nonaqueous electrolyte solution and nonaqueous electrolyte battery using same

Disclosed herein is a non-aqueous electrolyte secondary battery containing at least a positive electrode capable of the absorbing and releasing of a lithium ion, a negative electrode capable of the absorbing and releasing of the lithium ion, and a non-aqueous electrolyte solution containing a non-aqueous solvent and an electrolyte dissolved in the non-aqueous solvent, where

A lithium secondary battery comprising: a positive electrode and a negative electrode which each has a specific composition and specific properties; and a nonaqueous electrolyte which contains a cyclic siloxane compound represented by general formula (1), fluorosilane compound represented by general formula (2), compound represented by general formula (3), compound having an S&#x2014;F bond in the molecule, nitric acid salt, nitrous acid salt, monofluorophosphoric acid salt, difluorophosphoric acid salt, acetic acid salt, or propionic acid salt in an amount of 10 ppm or more of the whole nonaqueous electrolyte. This lithium secondary battery has a high capacity, long life, and high output. [In general formula (1), Rand Rare an organic group having 1-12 carbon atoms and n is an integer of 3-10. In general formula (2), Rto Rare an organic group having 1-12 carbon atoms; x is an integer of 1-3; and p, q, and r each are an integer of 0-3, provided that 1&#x2264;p+q+r&#x2264;3. In general formula (3), Rto Rare an organic group having 1-12 carbon atoms and symbol A is a group constituted of H, C, N, O, F, S, Si, and/or P.]

Lithium secondary batteries and nonaqueous electrolyte for use in the same

The present invention relates to a nonaqueous electrolytic solution for use in a nonaqueous electrolytic solution secondary battery that comprises a negative electrode and a positive electrode capable of storing and releasing metal ions, and a nonaqueous electrolytic solution, wherein the nonaqueous electrolytic solution contains the specific compounds (A) and (B).

Nonaqueous electrolytic solution and nonaqueous electrolytic solution secondary battery using same

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

Disclosed herein is a nonaqueous electrolyte solution containing an electrolyte and a nonaqueous solvent, the nonaqueous electrolyte solution including a compound represented by formula (A) and: (1) at least one compound selected from a nitrile compound, an isocyanate compound, a difluorophosphate, a fluorosulfonate, a lithium bis(fluorosulfonyl)imide and a compound represented by the formula (B) below, or (2) a cyclic carbonate compound having a fluorine atom in an amount of 0.01% by mass to 50.0% by mass based on a total amount of the nonaqueous electrolyte solution. In formula (A), Rto Rrepresent optionally substituted organic groups having 1 to 20 carbon atoms, and in formula (B), R, Rand Rindependently represent an alkyl group, alkenyl group or alkynyl group having 1 to 12 carbon atoms that may be substituted with a halogen atom, and n represents an integer of 0 to 6. 

Disclosed herein is a non-aqueous electrolyte solution containing, in addition to an electrolyte and a non-aqueous solvent, (A) a compound having at least two isocyanate groups per molecule, and (B) LiN(FSO).

An object is to provide a non-aqueous electrolyte solution that can improve the capacity deterioration and gas generation associated with the high-temperature storage of non-aqueous electrolyte batteries. A further object is to provide a non-aqueous electrolyte battery that uses this non-aqueous electrolyte solution. These objects can be achieved by using a non-aqueous electrolyte solution that incorporates, in prescribed contents, (A) a compound having at least two isocyanate groups per molecule and a compound having at least two cyano groups per molecule.

The object of the present invention is to provide a nonaqueous electrolyte secondary battery which has excellent balance of general performance with respect to performance including durability, capacity, resistance, and output characteristics. Provided is a nonaqueous electrolyte battery comprising a positive electrode and a negative electrode each being capable of occluding and releasing metal ions, and a nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution contains an electrolyte, a nonaqueous solvent, and at least one compound selected from the group consisting of a compound having a fluorosulfonyl structure (&#x2014;SOF), a difluorophosphate, and an isocyanate compound, and wherein the negative electrode has a negative electrode active material containing metal particles capable of alloying with Li and graphite particles.

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Ibaraki, Japan

Minoru Kotato