Electrolyte membrane

The present invention relates to an electrolyte membrane including a graft polymer having a sulfonic acid group as a proton conductive group, in which, when the electrolyte membrane is divided into four equal parts in a thickness direction thereof, a content of the sulfonic acid group in each of out...

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Bibliographische Detailangaben
1. Verfasser:	TACHIBANA TOSHIMITSU
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CABLES CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS CONDUCTORS ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INSULATORS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	The present invention relates to an electrolyte membrane including a graft polymer having a sulfonic acid group as a proton conductive group, in which, when the electrolyte membrane is divided into four equal parts in a thickness direction thereof, a content of the sulfonic acid group in each of outer regions is larger than a content of the sulfonic acid group in each of inner regions; in which A1, A2, B1 and B2 satisfy the following formula: 1.5 (A1+A2)/(B1+B2) 8, in which A1 and A2 each represent a maximum value of a distribution amount of the sulfonic acid group in each of the two outer regions, and B1 and B2 each represent an average value of a maximum value and a minimum value of a distribution amount of the sulfonic acid group in each of the two inner regions; and in which the electrolyte membrane has an ion-exchange capacity of 0.5 to 2 meq/g.