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1. WO2020179126 - NON-AQUEOUS ELECTROLYTE, SEMI-SOLID ELECTROLYTE MEMBRANE, SHEET FOR SECONDARY BATTERY, AND SECONDARY BATTERY

Publication Number WO/2020/179126
Publication Date 10.09.2020
International Application No. PCT/JP2019/042237
International Filing Date 29.10.2019
IPC
H01M 10/0569 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564the electrolyte being constituted of organic materials only
0566Liquid materials
0569characterised by the solvents
H01M 10/052 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
H01M 10/0562 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0561the electrolyte being constituted of inorganic materials only
0562Solid materials
H01M 10/0567 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564the electrolyte being constituted of organic materials only
0566Liquid materials
0567characterised by the additives
H01M 10/0568 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
056characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564the electrolyte being constituted of organic materials only
0566Liquid materials
0568characterised by the solutes
Applicants
  • 株式会社日立製作所 HITACHI, LTD. [JP]/[JP]
  • 国立大学法人横浜国立大学 NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY [JP]/[JP]
Inventors
  • 宇根本 篤 UNEMOTO Atsushi
  • 上野 和英 UENO Kazuhide
  • 渡邉 正義 WATANABE Masayoshi
  • 獨古 薫 DOKKO Kaoru
Agents
  • 特許業務法人平木国際特許事務所 HIRAKI & ASSOCIATES
Priority Data
2019-03993405.03.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) NON-AQUEOUS ELECTROLYTE, SEMI-SOLID ELECTROLYTE MEMBRANE, SHEET FOR SECONDARY BATTERY, AND SECONDARY BATTERY
(FR) ÉLECTROLYTE NON AQUEUX, MEMBRANE ÉLECTROLYTIQUE SEMI-SOLIDE, FEUILLE POUR BATTERIE SECONDAIRE ET BATTERIE SECONDAIRE
(JA) 非水電解液、半固体電解質層、二次電池用シート及び二次電池
Abstract
(EN)
The purpose of the present invention is to provide a non-aqueous electrolyte capable of improving input/output characteristics of a secondary battery, and in particular capable of improving the life and rate characteristics at a high temperature of the secondary battery. This non-aqueous electrolyte is characterized by containing: a solvated ionic liquid having sulfolane and/or a derivative thereof and an electrolyte salt; an optional low-viscosity organic solvent; and an optional negative-electrode interface stabilizer, wherein the low-viscosity organic solvent has an equilibrium vapor pressure of at least 1 Pa at room temperature, and Y≤142.86X-11.429 is satisfied, where X is the ratio of the number of moles of the solvated ionic liquid to the total number of moles of the solvated ionic liquid and the low-viscosity organic solvent, and Y (%) is the ratio of the weight of the negative-electrode interface stabilizer to the total weight of the solvated ionic liquid and the low-viscosity organic solvent.
(FR)
Le but de la présente invention est de fournir un électrolyte non aqueux capable d'améliorer les caractéristiques d'entrée/sortie d'une batterie secondaire, et en particulier capable d'améliorer les caractéristiques de durée de vie et de vitesse à une température élevée de la batterie secondaire. Cet électrolyte non aqueux est caractérisé en ce qu'il contient : un liquide ionique solvaté ayant du sulfolane et/ou un dérivé de celui-ci et un sel électrolytique; un solvant organique à faible viscosité facultatif; et un stabilisateur facultatif d'interface d'électrode négative, le solvant organique à faible viscosité ayant une pression de vapeur d'équilibre d'au moins 1 Pa à température ambiante, et Y ≤ 142,86X - 11,429 étant satisfaite, X étant le rapport du nombre de moles du liquide ionique solvaté au nombre total de moles du liquide ionique solvaté et du solvant organique de faible viscosité, et Y (%) est le rapport du poids du stabilisateur d'interface d'électrode négative au poids total du liquide ionique solvaté et du solvant organique de faible viscosité.
(JA)
二次電池の入出力特性を向上させることができ、特に、高温における寿命及びレート特性を向上させることが可能な非水電解液を提供することを目的とする。 本発明の非水電解液は、スルホラン及び/又はその誘導体と電解質塩とを有する溶媒和イオン液体、任意の低粘度有機溶媒、並びに任意の負極界面安定化材を含み、前記低粘度有機溶媒の室温での平衡蒸気圧が1Pa以上であり、前記溶媒和イオン液体と前記低粘度有機溶媒との総モル数に対する前記溶媒和イオン液体のモル数の比をXとし、前記溶媒和イオン液体と前記低粘度有機溶媒との総重量に対する前記負極界面安定化材の重量の比をY(%)としたとき、 Y≦142.86X-11.429 を満たすことを特徴とする。
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