Vanadium Redox Flow Battery

V2+ + VO2+ + 2H+ ⇌ V3+ + VO2+ + H2O

نظرة عامة

The vanadium redox flow battery (VRFB) uses four oxidation states of vanadium (V²⁺/V³⁺ and VO²⁺/VO₂⁺) in two electrolyte tanks. During discharge, V²⁺ is oxidized to V³⁺ at the negative electrode while VO₂⁺ is reduced to VO²⁺ at the positive electrode. Using the same element eliminates cross-contamination.

المشاركون

الدور المادة المعامل الحالة
متفاعل Vanadium V 1 (aq)
منتج Water H₂O 1 (l)

مثال من الحياة اليومية

Large VRFB installations store renewable energy from wind and solar farms, releasing it when the sun is not shining or wind is not blowing.

الأهمية الصناعية

Vanadium flow batteries are used for grid-scale energy storage with capacities up to hundreds of MWh. They offer 20+ year lifetimes and unlimited cycling.

الخصائص

النوع
Redox
قابل للعكس
نعم
الطاقة
طارد للحرارة
ΔH
-121,0 kJ/mol

التفاعلات ذات الصلة

Iron(II) to Iron(III) Oxidation by Oxygen Bleaching with Sodium Hypochlorite Copper Reduction of Silver Ion Aqua Regia Dissolving Gold Cerium(IV) Reduction by Iron(II) Chlorine Oxidation of Bromide Copper Oxidation by Nitric Acid Hypochlorite Oxidation of Hydrogen Peroxide Hydrogen Peroxide as Oxidizing Agent (Acidic) Displacement of Hydrogen from Acid by Magnesium

Frequently Asked Questions

What is the equation for Vanadium Redox Flow Battery?
The balanced equation is: V²⁺ + VO₂⁺ + 2H⁺ ⇌ V³⁺ + VO²⁺ + H₂O.
What type of reaction is Vanadium Redox Flow Battery?
Vanadium Redox Flow Battery is a redox reaction. It is reversible under certain conditions.
Is Vanadium Redox Flow Battery exothermic or endothermic?
Vanadium Redox Flow Battery is exothermic (releases energy). The enthalpy change (ΔH) is -121.0 kJ/mol.