Denso Corporation

Adeka Corporation

Other

The University of Tokyo

Asahi Denka Kogyo Kabushiki Kaisha

Asahi Denka Co., Ltd.

Kyohei Usami

Naohiro Kubota

Manabu Yamada

Naomi Awano

Hiroaki Watanabe

Takayuki Taki

Hisashi Umemoto

Yuyu Ohnuma

Miho Ito

Atsushi Fukaya

Atsuki Shibuya

Shinya Mashimo

Kouhei Yamamoto

Hideji Komatsu

Yasunori Takeuchi

Atsuski Shibuya

Tadashi Sugawara

Michio M Matsushita

A nonaqueous electrolyte solution for secondary batteries, which maintains small internal resistance and high electrical capacitance in long-term use in a nonaqueous electrolyte secondary battery uses, as an active material, a crystalline carbon material having a high crystallinity, and a negative electrode produced using a polymeric carboxylic compound as a binding agent. The nonaqueous electrolyte solution contains: (A) at least one compound selected from a group consisting of an unsaturated phosphate ester compound represented by a general formula (1) and an unsaturated phosphate ester compound represented by a general formula (2); (B) at least one compound selected from a group consisting of a sulfite ester compound, a sulfonate ester compound, an alkali metal imide salt compound, a fluorosilane compound, an organic disilane compound or an organic disiloxane compound; (C) an organic solvent, and (D) an electrolyte salt. A secondary battery using such nonaqueous electrolyte solution is also described.

Nonaqueous electrolyte solution for batteries, and nonaqueous electrolyte secondary battery using same

Disclosed is a non-aqueous electrolyte secondary battery using a polyanion compound or a lithium nickelate as a positive electrode active material, suppressing the elution of a transition metal from the polyanion compound or ameliorating the deterioration of a binder by a residual alkali component, and provides a non-aqueous electrolyte secondary battery having a negative electrode intercalating and deintercalating lithium ions, a positive electrode containing a lithium-containing compound as a positive electrode active material, and a non-aqueous electrolyte with a lithium salt dissolved in organic solvent. The lithium-containing compound is a polyanion compound or a lithium nickelate. The non-aqueous electrolyte contains a fluorosilane compound:  Rto R: alkyl group having 1-8 carbon(s), an alkenyl group having 2-8 carbons, a cycloalkyl group having 5-8 carbons, an aryl group having 6-8 carbons or a fluorine atom. R: alkylene group having 1-8 carbon(s) or an alkylene group having 4-8 carbons having an ether group.

Non-aqueous electrolyte secondary battery

An active material for a secondary battery has excellent large current charge-discharge characteristic and a high energy density. The secondary battery is composed mainly of the active material having a conductive polymer compound represented by formula B or F as the positive electrode. Because this conductive polymer compound works as an active material and has conductivity per se, the use of a conductivity enhancer can be omitted, and the energy density is high. An improvement in the capacity of a secondary battery using the active material above or a decrease in the internal resistance can be realized.

Active material and a secondary battery using the active material

A nonaqueous electrolytic solution comprising an electrolyte salt dissolved in an organic solvent is disclosed. The nonaqueous electrolytic solution contains a silicon compound represented by formula (I): wherein Rrepresents an alkenyl group having 2 to 10 carbon atoms; Rand Reach represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms or a halogen atom; and X represents a halogen atom.

Nonaqueous electrolytic solution and nonaqueous secondary battery using the same

A nonaqueous electrolytic solution having an electrolyte salt dissolved in an organic solvent, which contains a silicon compound having an unsaturated bond which is represented by formula (I):wherein R, R, R, R, R, and Reach represent an alkyl group, an alkoxy group, an alkenyl group, an alkenyloxy group, an alkynyl group, an alkynyloxy group, an aryl group or an aryloxy group, each of which may have an ether bond in the chain thereof; n represents a number of from 0 to 5; when n is 1 to 5, X represents a single bond, an oxygen atom, an alkylene group, an alkylenedioxy group, an alkenylene group, an alkenylenedioxy group, an alkynylene group, an alkynylenedioxy group, an arylene group or an arylenedioxy group; provided that at least one of R, R, R, R, R, R, and X represents a group containing an unsaturated bond, an organotin compound or an organogermanium compound and a nonaqueous secondary battery having the same.

Nonaqueous electrolytic solution and nonaqueous secondary battery

A flame-retardant electrolytic solution of an electrolyte salt in an organic solvent, wherein the organic solvent contains at least one phosphorus compound represented by formula (I) and a nonaqueous secondary battery containing the flame-retardant electrolytic solution.

Flame-retardant electrolytic solution and nonaqueous secondary battery containing the same

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Aichi, Japan

Kyohei Usami