BackComputational Modeling of a 2D Vanadium Redox Flow Battery Cell
JOM 76(1) : 130-140 (2024)
Abstract
These days, the implementation of sustainable power generation has led to a
difference in propensity in the energy creation and capacity frameworks,
compelling them to conquer the hardships that it addresses. Considering the
entirety among the suggested technologies, vanadium redox flow batteries
(VRFB) stand out as a wonderful choice regarding cyclability and versatility.
The point of this study is to break down electrochemical performance of a
vanadium redox flow battery cell in two dimensions. To accomplish this, a two-
dimensional model comprising an ion exchange membrane, electrode and flow
channel was created. A set of electrode compression and flow rates was tested
to envision the impact on the velocity field, species concentration and potential
and current distributions. As a result of compression, velocity profiles and
reaction rates are both increased, by 12.7% and 9.2%, respectively, when
applying 50% compression. Higher reaction rates and more stable concentra-
tion gradients were induced by higher electrolyte rates. Additionally, over-
potential was reduced by 1.5% with the lowest flow rate.
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