scholarly journals A Generalized Reduced Fluid Dynamic Model for Flow Fields and Electrodes in Redox Flow Batteries

AIChE Journal ◽  
2021 ◽  
Author(s):  
Ziqiang Cheng ◽  
Kevin M. Tenny ◽  
Alberto Pizzolato ◽  
Antoni Forner‐Cuenca ◽  
Vittorio Verda ◽  
...  
Keyword(s):  
Dynamic Model ◽  
Fluid Dynamic ◽  
Flow Fields ◽  
Redox Flow Batteries ◽  
Flow Batteries

scholarly journals Vanadium Redox Flow Batteries: A Review Oriented to Fluid-Dynamic Optimization

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 176
Author(s):  
Iñigo Aramendia ◽  
Unai Fernandez-Gamiz ◽  
Adrian Martinez-San-Vicente ◽  
Ekaitz Zulueta ◽  
Jose Manuel Lopez-Guede
Keyword(s):  
Large Scale ◽  
Numerical Models ◽  
Fluid Dynamic ◽  
Renewable Energy Sources ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Batteries ◽  
Design Flexibility ◽  
Flow Batteries ◽  
Exchange Membrane ◽  
Vanadium Redox

Large-scale energy storage systems (ESS) are nowadays growing in popularity due to the increase in the energy production by renewable energy sources, which in general have a random intermittent nature. Currently, several redox flow batteries have been presented as an alternative of the classical ESS; the scalability, design flexibility and long life cycle of the vanadium redox flow battery (VRFB) have made it to stand out. In a VRFB cell, which consists of two electrodes and an ion exchange membrane, the electrolyte flows through the electrodes where the electrochemical reactions take place. Computational Fluid Dynamics (CFD) simulations are a very powerful tool to develop feasible numerical models to enhance the performance and lifetime of VRFBs. This review aims to present and discuss the numerical models developed in this field and, particularly, to analyze different types of flow fields and patterns that can be found in the literature. The numerical studies presented in this review are a helpful tool to evaluate several key parameters important to optimize the energy systems based on redox flow technologies.

Rechargeable redox flow batteries: flow fields, stacks and design considerations

2018 ◽  
Vol 47 (23) ◽  
pp. 8721-8743 ◽  
Author(s):  
Xinyou Ke ◽  
Joseph M. Prahl ◽  
J. Iwan D. Alexander ◽  
Jesse S. Wainright ◽  
Thomas A. Zawodzinski ◽  
...  
Keyword(s):  
Flow Fields ◽  
Review Article ◽  
Next Generation ◽  
Redox Flow Batteries ◽  
Design Considerations ◽  
Flow Batteries

This review article summarizes the development of flow fields and stacks, and design considerations for next-generation flow batteries.

Combining Electrochemical, Fluid Dynamic, and Imaging Analyses to Understand the Effect of Electrode Microstructure and Electrolyte on Redox Flow Batteries

2020 ◽  
Vol MA2020-02 (60) ◽  
pp. 3032-3032
Author(s):  
Benedict A. Simon ◽  
Andrea Gayon Lombardo ◽  
Catalina Pino ◽  
Charles E. Wood ◽  
Kevin M. Tenny ◽  
...  
Keyword(s):  
Fluid Dynamic ◽  
Redox Flow Batteries ◽  
Flow Batteries

scholarly journals Modeling the Effect of Channel Tapering on the Pressure Drop and Flow Distribution Characteristics of Interdigitated Flow Fields in Redox Flow Batteries

Processes ◽  
2020 ◽  
Vol 8 (7) ◽  
pp. 775
Author(s):  
Pablo A. García-Salaberri ◽  
Tugba Ceren Gokoglan ◽  
Santiago E. Ibáñez ◽  
Ertan Agar ◽  
Marcos Vera
Keyword(s):  
Experimental Data ◽  
Pressure Drop ◽  
Cross Sections ◽  
Porous Electrode ◽  
Flow Distribution ◽  
Flow Fields ◽  
Viscous Resistance ◽  
Redox Flow Batteries ◽  
Sink Term ◽  
Flow Batteries

Optimization of flow fields in redox flow batteries can increase performance and efficiency, while reducing cost. Therefore, there is a need to establish a fundamental understanding on the connection between flow fields, electrolyte flow management and electrode properties. In this work, the flow distribution and pressure drop characteristics of interdigitated flow fields with constant and tapered cross-sections are examined numerically and experimentally. Two simplified 2D along-the-channel models are used: (1) a CFD model, which includes the channels and the porous electrode, with Darcy’s viscous resistance as a momentum sink term in the latter; and (2) a semi-analytical model, which uses Darcy’s law to describe the 2D flow in the electrode and lubrication theory to describe the 1D Poiseuille flow in the channels, with the 2D and 1D sub-models coupled at the channel/electrode interfaces. The predictions of the models are compared between them and with experimental data. The results show that the most influential parameter is γ , defined as the ratio between the pressure drop along the channel due to viscous stresses and the pressure drop across the electrode due to Darcy’s viscous resistance. The effect of R e in the channel depends on the order of magnitude of γ , being negligible in conventional cells with slender channels that use electrodes with permeabilities in the order of 10 − 12 m 2 and that are operated with moderate flow rates. Under these conditions, tapered channels can enhance mass transport and facilitate the removal of bubbles (from secondary reactions) because of the higher velocities achieved in the channel, while being pumping losses similar to those of constant cross-section flow fields. This agrees with experimental data measured in a single cell operated with aqueous vanadium-based electrolytes.

Computational design of flow fields for vanadium redox flow batteries via topology optimization

2019 ◽  
Vol 26 ◽  
pp. 100990 ◽  
Author(s):  
Chih-Hsiang Chen ◽  
Kentaro Yaji ◽  
Shintaro Yamasaki ◽  
Shohji Tsushima ◽  
Kikuo Fujita
Keyword(s):  
Topology Optimization ◽  
Computational Design ◽  
Flow Fields ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox
Sign in / Sign up

Export Citation Format

Share Document