In situ diagnostic techniques for characterisation of polymer electrolyte membrane water electrolysers - Flow visualisation and electrochemical impedance spectroscopy

被引:166
作者
Dedigama, I. [1 ]
Angeli, P. [1 ]
Ayers, K. [2 ]
Robinson, J. B. [1 ]
Shearing, P. R. [1 ]
Tsaoulidis, D. [1 ]
Brett, D. J. L. [1 ]
机构
[1] UCL, Dept Chem Engn, Electrochem Innovat Lab, London, England
[2] Proton OnSite, Wallingford, CT USA
基金
英国工程与自然科学研究理事会;
关键词
PEM electrolyser; Electrochemical impedance spectroscopy; Two-phase flow; Bubble formation; Thermal imaging; Printed circuit board; FUEL-CELL RESEARCH; HYDROGEN GENERATION; 2-PHASE FLOW; EVOLUTION REACTION; OXYGEN EVOLUTION; ELECTROCATALYSIS; METHANOL; TECHNOLOGY; CORROSION; CHANNEL;
D O I
10.1016/j.ijhydene.2014.01.026
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070305 [高分子化学与物理];
摘要
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.
引用
收藏
页码:4468 / 4482
页数:15
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