VANADIUM REDOX BATTERY

PROBLEM TO BE SOLVED: To achieve a vanadium redox battery of longer life and high output.SOLUTION: A vanadium redox battery includes a positive electrode 20, a negative electrode 30, an ion-exchange membrane 12 for sectioning the positive electrode 20 and negative electrode 30, and passing hydrogen...

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Hauptverfasser:	YAMAMURA ASAO, YOSHIDA SHIGEKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To achieve a vanadium redox battery of longer life and high output.SOLUTION: A vanadium redox battery includes a positive electrode 20, a negative electrode 30, an ion-exchange membrane 12 for sectioning the positive electrode 20 and negative electrode 30, and passing hydrogen ions, and an electrolyte. The ion-exchange membrane 12 has a membrane resistance of 2.0 Ω cmor less at 1 kHz in 0.5M sulphuric acid, and a permeability of pentavalent vanadium ions of 600 μmol/(cmweek) or less.SELECTED DRAWING: Figure 1 【課題】バナジウムレドックス電池の高寿命化及び高出力化を達成する。【解決手段】バナジウムレドックス電池は、正極２０と、負極３０と、正極２０と負極３０とを区画するとともに、水素イオンを通過させるイオン交換膜１２と、電解液と、を含む。イオン交換膜１２は、０．５Ｍ硫酸中での１ｋＨｚにおける膜抵抗値が２．０Ω・ｃｍ２以下であり、かつ、５価のバナジウムイオンの透過性が６００μｍｏｌ／（ｃｍ２・week）以下である。【選択図】図１