Vanadium Redox Flow Battery

V2+ + VO2+ + 2H+ ⇌ V3+ + VO2+ + H2O

개요

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.

참여 물질

역할 물질 계수 상태
반응물 Vanadium V 1 (aq)
생성물 Water H₂O 1 (l)

일상 속 예시

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

산업적 중요성

바나듐 흐름 전지는 수백 MWh의 용량으로 그리드 규모 에너지 저장에 사용됩니다. 20년 이상의 수명과 무한한 사이클링을 제공합니다.

성질

유형
Redox
가역 반응
예
에너지
발열
ΔH
-121.0 kJ/mol

관련 반응

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.