LAPSE:2020.0224
Published Article
LAPSE:2020.0224
Acid-Base Flow Battery, Based on Reverse Electrodialysis with Bi-Polar Membranes: Stack Experiments
Jiabing Xia, Gerhart Eigenberger, Heinrich Strathmann, Ulrich Nieken
February 12, 2020
Neutralization of acid and base to produce electricity in the process of reverse electrodialysis with bipolar membranes (REDBP) presents an interesting but until now fairly overlooked flow battery concept. Previously, we presented single-cell experiments, which explain the principle and discuss the potential of this process. In this contribution, we discuss experiments with REDBP stacks at lab scale, consisting of 5 to 20 repeating cell units. They demonstrate that the single-cell results can be extrapolated to respective stacks, although additional losses have to be considered. As in other flow battery stacks, losses by shunt currents through the parallel electrolyte feed/exit lines increases with the number of connected cell units, whereas the relative importance of electrode losses decreases with increasing cell number. Experimental results are presented with 1 mole L−1 acid (HCl) and base (NaOH) for open circuit as well as for charge and discharge with up to 18 mA/cm2 current density. Measures to further increase the efficiency of this novel flow battery concept are discussed.
Keywords
acid-base neutralization flow battery, electrical energy storage, reverse electrodialysis with bipolar membranes, stack test results
Suggested Citation
Xia J, Eigenberger G, Strathmann H, Nieken U. Acid-Base Flow Battery, Based on Reverse Electrodialysis with Bi-Polar Membranes: Stack Experiments. (2020). LAPSE:2020.0224
Author Affiliations
Xia J: Institute of Chemical Process Engineering, University of Stuttgart, Boeblinger Strasse 78, D-70199 Stuttgart, Germany
Eigenberger G: Institute of Chemical Process Engineering, University of Stuttgart, Boeblinger Strasse 78, D-70199 Stuttgart, Germany
Strathmann H: Institute of Chemical Process Engineering, University of Stuttgart, Boeblinger Strasse 78, D-70199 Stuttgart, Germany
Nieken U: Institute of Chemical Process Engineering, University of Stuttgart, Boeblinger Strasse 78, D-70199 Stuttgart, Germany
Journal Name
Processes
Volume
8
Issue
1
Article Number
E99
Year
2020
Publication Date
2020-01-11
Published Version
ISSN
2227-9717
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PII: pr8010099, Publication Type: Journal Article
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LAPSE:2020.0224
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doi:10.3390/pr8010099
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Feb 12, 2020
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Feb 12, 2020
 
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Calvin Tsay
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