Mitsubishi Chemical Corporation

Mu Ionic Solutions Corporation

Masakazu Yokomizo

Hideharu Sato

Minoru Kotato

Akio Ueda

Tooru Fuse

Hitoshi Suzuki

Ryoichi Kato

Hitoshi Matsumoto

Nobuyuki Ishiwatari

Shunsuke Yamada

Hidekazu Miyagi

Yosuke Saito

Hiroyuki Uono

Tadashi Ishihara

Hideharu Satoh

Takayuki Nakajima

Hiroyuki Oshima

Tomohiro Satou

Akihiro Kato

Masashi Fujiwara

Akihiro Katou

An objet of the invention is to provide a non-aqueous electrolyte secondary battery superior in input-output characteristics even at a low temperature. To achieve the object, hybrid particles (carbon material) satisfying certain conditions, and composed of graphite particles and carbon particles with a primary particle size from 3 nm to 500 nm, preferably as well as amorphous carbon, are used as a negative electrode active material for a non-aqueous electrolyte secondary battery, so that the input-output characteristics of a non-aqueous electrolyte secondary battery at a low temperature can be improved remarkably.

Carbon material for non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and manufacturing method for carbon material for non-aqueous electrolyte secondary battery

The present invention resolves the problem by using a multilayer-structured carbon material, as a nonaqueous electrolytic solution secondary battery negative electrode, which satisfies the following (a) and (b):

Multilayer-structured carbon material for nonaqueous electrolytic solution secondary battery negative electrode, negative electrode for nonaqueous secondary battery, lithium ion secondary battery, and process for producing multilayer-structured carbon material for nonaqueous electrolytic solution secondary battery negative electrode

A lithium secondary battery is provided. The battery comprises: 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 of formula (1), a fluorosilane compound of formula (2), a compound of 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. 

Lithium secondary batteries and nonaqueous electrolyte for use in the same

A negative electrode for a nonaqueous electrolyte secondary battery having a small surface film resistance and a high negative electrode strength, wherein the negative electrode includes a collector and an active material layer formed thereon, wherein the active material layer contains an active material and a binder composition, wherein the active material is a material in which metal oxide fine particles having an average particle diameter of 250 nm or less are attached to the surface thereof, and wherein the binder composition contains a binder having an olefinic unsaturated bond.

Negative electrode for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery using the same

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Ibaraki, Japan

Masakazu Yokomizo