介电谱
电解质
阳极
材料科学
体积流量
分析化学(期刊)
气泡
水流
水运
膜
电流密度
化学
电化学
电极
热力学
色谱法
机械
环境工程
生物化学
物理
物理化学
量子力学
工程类
作者
Ishanka Dedigama,Dan J. L. Brett,Thomas J. Mason,Jason Millichamp,Paul R. Shearing,Katherine E. Ayers
出处
期刊:Meeting abstracts
日期:2015-07-15
卷期号:MA2015-03 (3): 700-700
标识
DOI:10.1149/ma2015-03/3/700
摘要
The effect of water flow rate on the performance of a polymer electrolyte membrane water electrolyser (PEMWE) was studied using an unpressurised lab-scale (25 cm 2 ) cell. The linear polarisation curves obtained showed a voltage increase at higher current densities that increased with water flow rate. Electrochemical impedance spectroscopy (EIS) showed that while lower water flow rates lead to higher cell temperatures and reduced membrane resistance, mass transport losses dominate at high current density. As the water flow is exclusively in the bubbly regime, increase in mass transport limitation is attributed to bubble formation dynamics and reduced gas void fraction at higher water flow rates. Figure 1
科研通智能强力驱动
Strongly Powered by AbleSci AI