MANUFACTURING METHOD AND MANUFACTURING APPARATUS OF ELECTROLYTE FOR VANADIUM REDOX FLOW BATTERY

• Main Authors: NAKAYAMA KOSUKE, MASAMOTO MANABU, BABA KOTARO, NAGASHIMA IKUO, ODA ASUKA
• Format: Patent
• Language: English; Japanese
• Published: 10.01.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a manufacturing method and a manufacturing apparatus of an electrolyte for a simple and convenient vanadium redox flow battery in a low cost.SOLUTION: A manufacturing method includes steps of: preparing a solution containing an original powder containing pentavalent vanadium and less than tetravalent vanadium; obtaining a vanadium containing solution by mixing this original powder and the solution; and obtaining an electrolyte by performing an electrolytic reduction of the vanadium content solution. In this manufacturing method, a part of the electrolytes is used as a solution. A manufacturing apparatus comprises: an electrolyte tank; an accumulation tank of the electrolyte; a solvent tank of the original powder; an original supply line that supplies the original powder containing the pentavalent vanadium in the solvent tank; and a solution supply line that supplies one part of the electrolytes to the solvent tank.SELECTED DRAWING: Figure 1 【課題】安価かつ簡便なバナジウムレドックスフロー電池用電解液の製造方法及び製造装置の提供。【解決手段】この製造方法は、５価のバナジウムを含む原料粉末と、４価未満のバナジウムを含む溶解液と、を準備すること、この原料粉末と溶解液とを混合してバナジウム含有溶液を得ること、及び、バナジウム含有溶液を電解還元して電解液を得ること、を含む。この製造方法では、電解液の一部を溶解液として使用する。製造装置は、電解槽と、電解液の貯留槽と、原料粉末の溶解槽と、溶解槽に５価のバナジウムを含む原料粉末を供給する原料供給ラインと、電解液の一部を溶解槽に供給する溶解液供給ラインと、を備えている。【選択図】図１