[Cormzy]

In the case of oxidation reaction that needs to occur in a vanadium redox flow battery,
VO²⁺+H2O -- VO₂⁺+e- +2H+
This reaction requires an input of energy in order to allow this reaction to occur, as VO₂⁺ has a higher chemical energy than VO²⁺.
I want to know the energy supplied by charging electrons in the elections is exchanged to the chemicals.
I have been struggling with this concept for a while and any help would be much appreciated.
Many thanks.