CN102844909 Separator for electrochemical element, electrochemical element using same, and method for manufacturing the separator for electrochemical element

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Application Number 201180019053.2

Application Date 14.03.2011

Publication Number 102844909

Publication Date 26.12.2012

Grant Number 102844909

Grant Date

Publication Kind A

CPC

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Applicants Hitachi Maxell

Inventors Matsumoto Nobuaki
Katayama Hideaki

Agents zhong jing wu yuzhen

Title

(EN) Separator for electrochemical element, electrochemical element using same, and method for manufacturing the separator for electrochemical element

(ZH)

电化学元件用隔膜及使用其的电化学元件、以及该电化学元件用隔膜的制造方法

Abstract

(EN) Disclosed is a separator for an electrochemical element, which is characterized by comprising a heat-resistant porous layer that is mainly composed of heat-resistant fine particles on at least one surface of a resin porous film that is mainly composed of a thermoplastic resin. The separator for an electrochemical element is also characterized in that: the resin porous film has a surface tension (wetting index) A of 35 mN/m or less; the heat-resistant porous layer is formed of a heat-resistant porous layer-forming composition that contains an aqueous medium and has a surface tension B of less than 29 mN/m; and the relation between the surface tension (wetting index) A and the surface tension B satisfies A > B.

H	ELECTRICITY
01	BASIC ELECTRIC ELEMENTS
G	CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
9	Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
004	Details
02	Diaphragms; Separators

H	ELECTRICITY
01	BASIC ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10	Secondary cells; Manufacture thereof
05	Accumulators with non-aqueous electrolyte
052	Li-accumulators
0525	Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries

H	ELECTRICITY
01	BASIC ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10	Secondary cells; Manufacture thereof
05	Accumulators with non-aqueous electrolyte
056	characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
0564	the electrolyte being constituted of organic materials only
0565	Polymeric materials, e.g. gel-type or solid-type

H	ELECTRICITY
01	BASIC ELECTRIC ELEMENTS
G	CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
11	Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors [EDLCs]; Processes specially adapted for the manufacture thereof or of parts thereof
52	Separators

Y	SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02	TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
E	REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60	Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10	Energy storage using batteries

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1. CN102844909 - Separator for electrochemical element, electrochemical element using same, and method for manufacturing the separator for electrochemical element

H	ELECTRICITY
01	BASIC ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50	Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40	Separators; Membranes; Diaphragms; Spacing elements inside cells
409	Separators, membranes or diaphragms characterised by the material
449	having a layered structure
451	comprising layers of only organic material and layers containing inorganic material

H	ELECTRICITY
01	BASIC ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50	Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40	Separators; Membranes; Diaphragms; Spacing elements inside cells
489	Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties

H	ELECTRICITY
01	BASIC ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50	Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40	Separators; Membranes; Diaphragms; Spacing elements inside cells
409	Separators, membranes or diaphragms characterised by the material
411	Organic material
414	Synthetic resins, e.g. thermoplastics or thermosetting resins