In situ diagnostic techniques for characterisation of polymer electrolyte membrane water electrolysers - Flow visualisation and electrochemical impedance spectroscopy
In situ diagnostic techniques for characterisation of polymer electrolyte membrane water electrolysers - Flow visualisation and electrochemical impedance spectroscopy
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DOI：
10.1016/j.ijhydene.2014.01.026
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发表时间：
2014-03-18
影响因子：
7.2
通讯作者：
Brett, D. J. L.
中科院分区：
文献类型：
--
作者：
Dedigama, I.;Angeli, P.;Brett, D. J. L.
使用高速相机、热成像和电化学阻抗谱研究了光学透明聚合物电解质膜（PEM）水电解池，以检查流动与电化学性能之间的关系。流态涵盖气泡流和段塞流，具体取决于气体形成速率（电流密度）和水供给速率。电化学阻抗谱 (EIS) 显示，与段塞流过渡相关的传质限制有所减少。版权所有 (C) 2014，Hydrogen Energy Publications, LLC。由爱思唯尔有限公司出版。保留所有权利。
An optically transparent polymer electrolyte membrane (PEM) water electrolysis cell was studied using a high-speed camera, thermal imaging and electrochemical impedance spectroscopy to examine the relationship between flow and electrochemical performance. The flow regime spans bubble and slug flow, depending on the rate of gas formation (current density) and water feed rate. Electrochemical impedance spectroscopy (EIS) shows that there is a reduction in mass transport limitation associated with the transition to slug flow. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.