Design of membraneless gas-evolving flow-through porous electrodes

JOURNAL OF POWER SOURCES

卷:491

Article

Rajaei, H.¹  Rajora, A.¹  Haverkort, J. W.¹ 

[1] Delft Univ Technol, Proc & Energy Dept, Leeghwaterstr 39, NL-2628 CB Delft, Netherlands

关键词: Flow-through porous electrodes;    Membraneless design;    Electrochemical reactor;   

DOI  :  10.1016/j.jpowsour.2020.229364

来源: Elsevier

【 摘 要 】

Flow-through electrolyzers, with flow parallel to the current, are used in a wide range of industrial applications. The presence of flow avoids concentration gradients but can also be used to separate evolved gases, allowing membrane-less operation. In this work, we propose a simple multiphase flow-through electrode model. We derive and experimentally validate an analytical expression for the minimum velocity required to ensure effective gas separation. From this relation, we analytically derive design parameters that show that significant energy savings can be made using flow, compared to a physical separator.

【 授权许可】

Free