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Effect of electrolyte flow on a gas evolution electrode

Abstract : In this study, the effect of flow of the electrolyte on an electrolysis cell and a zinc cell is investigated. The gain of energy brought by the flow is discussed and compared to the viscous losses in the cells. We point out that the balance between the gained electrical power and the viscous loss power is positive only if the hydrodynamic resistance of the circuit is correctly designed and further comment on the economical viability of the whole process. A model of the studied phenomena is proposed in the last section. This analytical model captures the dynamics of the process, gives the optimal flowing conditions and the limits of the energetical rentability of the process. This study shows that the use of flowing electrolyte in zinc-air batteries can be energetically profitable with the appropriate flowing conditions.
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Submitted on : Monday, March 1, 2021 - 9:20:59 AM
Last modification on : Thursday, September 2, 2021 - 9:08:50 AM
Long-term archiving on: : Sunday, May 30, 2021 - 7:39:32 PM

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Soufiane Abdelghani-Idrissi, Nicolas Dubouis, Alexis Grimaud, Philippe Stevens, Gwenaëlle Toussaint, et al.. Effect of electrolyte flow on a gas evolution electrode. Scientific Reports, Nature Publishing Group, 2021, 11 (1), pp.4677. ⟨10.1038/s41598-021-84084-1⟩. ⟨hal-03154533⟩

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