Redox Flow Battery Charging: Understand Electrochemistry

[cormzy]

TL;DR

How does DC current in an electrode covert its electrical energy into chemical energy.

I am researching the electrochemistry of redox flow batteries, however, I do not understand the charging process.
As I understand DC current arrives in an electrode and transfers energy to excite electrons in the electrolyte thus providing energy to trigger a chemical reaction (storing electrical energy as chemical energy).
I am desperate to understand this concept and any help would be invaluable!
Many thanks,

 

[anorlunda]

Your question is more chemistry rather than EE. So before answering, please tell us a bit about your level of chemistry knowledge.

If a chemical reaction is reversible, what drives it to go one direction or the other?

 

[cormzy]

Your question is more chemistry rather than EE. So before answering, please tell us a bit about your level of chemistry knowledge.

If a chemical reaction is reversible, what drives it to go one direction or the other

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 is exchanged to the chemicals.