Modified vanadium compound, producing method thereof, redox flow battery electrolyte composite and redox flow battery electrolyte producing method
AssigneeNippon Chemical Industrial Co., Ltd.
InventorsYasuyuki Tanaka, Muneo Mita, Ken Horikawa, Nobuyuki Tokuda, Masayuki Furuya, Michiru Kubata
Life of this patent
Estimating the term…
Abstract
A modified vanadium compound of the present invention in such that vanadium sulfate (III) or a mixed vanadium compound of vanadium sulfate (III) and vanadyl sulfate (IV) contains excessive sulfuric acid other than sulfate group composing the vanadium sulfate (III) or the vanadyl sulfate (IV), and when the modified vanadium compound is used, a redox flow battery electrolyte can be prepared easily.
Claims10
A modified vanadium compound, characterized in that vanadium sulfate (III) or a mixed vanadium compound of vanadium sulfate (III) and vanadyl sulfate (IV) contains excessive sulfuric acid other than sulfate group composing the vanadium sulfate (III) or the vanadyl sulfate (IV).
A modified vanadium compound producing method, characterized in that a vanadium-contained solution, in which vanadium sulfate (III) or a mixed vanadium compound of vanadium sulfate (III) and vanadyl sulfate (IV) is dissolved in a sulfate solution, is condensed, cooled to be solidified.
A modified vanadium compound producing method, characterized in that vanadium sulfate (III) or a mixed vanadium compound of vanadium sulfate (III) and vanadyl sulfate (IV) is dissolved in a sulfate solution, and an obtained vanadium-contained solution is condensed and is cooled to be solidified.
Dependencies are inferred from the claim text.