▣  Redox Flow battery(RFB)  As one kind of ESS(Energy Storage System) technologies - 

  1. Independent from its energy capacity, which is only determined by species concentration and volume of electrolyte tank

  2. Completely discharged for long periods without ill effects

  3. Safety : Accidentally mixed situation, Easy thermal management, No possible to explode.

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▣  Component of RFB Cell

  1. Electrode : Electrochemical reaction occurs (Red-ox)

  2. Membrane : Only transport protons

  3. Manifold : Connect external tank and electrochemical cell

  4. Bipolar plate : Where the electrolyte flows in cell (Recently)

▣  RFB System

FB component => 10 ~ 20 cell (each 0.1kW/0.1kWh)

=> More than 100 Stack(each 1kW/1kWh) => FB system(MW/MWh)

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▣  Governing Equations

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Electrochemistry

Fluid Dynamics

- Brinkman Equation

- Nernst-Plank Equation

- Butler-Volmer's Law

- Ohm's Law

- Overpotential

▣  Simulation Results

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▲​ Velocity Field of RFB Battery Cell

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▲​ Concentration of Vanadium ion(V3,V5) at RFB Battery Cell