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

Office
China
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
H01G 9/02
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
9Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
004Details
02Diaphragms; Separators
H01M 10/0525
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
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 10/0565
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
0565Polymeric materials, e.g. gel-type or solid-type
H01G 11/52
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
11Hybrid 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
52Separators
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage using batteries
H01M 50/449
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40Separators; Membranes; Diaphragms; Spacing elements inside cells
409Separators, membranes or diaphragms characterised by the material
449having a layered structure
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.