Redox Flow Battery Charging: Understand Electrochemistry

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cormzy
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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,
 
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anorlunda said:
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.