Vanadium solution, electrolyte comprising same, secondary battery comprising same, and method for preparing same
AssigneeLG Chem, Ltd.
InventorsJeongbae Lee, Tae Geun Noh, Bong Hyun Jeong, Geungi Min, Sikwon Moon, Sujin Byun
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Abstract
The present specification relates to a vanadium solution, an electrolyte including the same, a secondary battery including the same, and a method for preparing the same.
Claims18
A method for preparing a vanadium solution, the method comprising:
- preparing a vanadium solution comprising a pentavalent vanadium ion (VO2+), an acid, and deoxygenated distilled water;
- and
- dissolving a vanadium precursor capable of forming a tetravalent vanadium ion (VO2+) in the vanadium solution.
A vanadium solution comprising a vanadium component which comprises a tetravalent vanadium ion, deoxygenated distilled water, and an acid, wherein the vanadium component comprises a pentavalent vanadium ion in a state where the vanadium solution is not used in a charge or discharge using electrodes.
A vanadium solution comprising a vanadium component which comprises a tetravalent vanadium ion, deoxygenated distilled water, and an acid, wherein the vanadium solution comprises vanadium at a concentration of 1.5 to 3.5 M, and when the vanadium solution is left to stand at 5° C. for 100 hours in a state where the acid in the vanadium solution is at a concentration of 3 M, a molar percentage of the vanadium ion dissolved in the vanadium solution based on a content of vanadium in the entire vanadium solution is more than 95%.
Dependencies are inferred from the claim text.