LITHIUM SECONDARY BATTERY

LITHIUM SECONDARY BATTERY

The object of an exemplary embodiment of the invention is to provide a lithium secondary battery which has high energy density by containing a positive electrode active substance operating at a potential of 4.5 V or higher with respect to lithium and which has excellent cycle property. An exemplary...

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Hauptverfasser: HATAKEYAMA, Hiroshi, NOGUCHI, Takehiro, SAITHO, Shinsaku, SASAKI, Hideaki, WAKI, Ippei, KATOU, Yuukou, KANEKO, Shinako, UEHARA, Makiko
Format: Patent
Sprache:eng ; fre ; ger
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator HATAKEYAMA, Hiroshi
NOGUCHI, Takehiro
SAITHO, Shinsaku
SASAKI, Hideaki
WAKI, Ippei
KATOU, Yuukou
KANEKO, Shinako
UEHARA, Makiko
description The object of an exemplary embodiment of the invention is to provide a lithium secondary battery which has high energy density by containing a positive electrode active substance operating at a potential of 4.5 V or higher with respect to lithium and which has excellent cycle property. An exemplary embodiment of the invention is an lithium secondary battery, which comprises a positive electrode comprising a positive electrode active substance and an electrolyte liquid comprising a nonaqueous electrolyte solvent; wherein the positive electrode active substance operates at a potential of 4.5 V or higher with respect to lithium; and wherein the nonaqueous electrolyte solvent comprises a fluorine-containing phosphate represented by a prescribed formula.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title LITHIUM SECONDARY BATTERY
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