Ion transport resistance in Microbial Electrolysis Cells with anion and cation exchange membranes
Ion transport resistance in Microbial Electrolysis Cells with anion and cation exchange membranes
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DOI：
10.1016/j.ijhydene.2009.03.004
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发表时间：
2009-05-01
影响因子：
7.2
通讯作者：
Buisman, Cees J. N.
中科院分区：
文献类型：
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作者：
Sleutels, Tom H. J. A.;Hamelers, Hubertus V. M.;Buisman, Cees J. N.
先前的研究表明，当负离子交换膜（AEM）与阳离子交换膜（CEM）分离电极室时，微生物电解细胞（MECs）的性能更好。在这里，我们通过比较两种基于潜在损耗和部分系统电阻的生物电化学系统分析方法，进一步研究了这一现象。我们的研究再次证实了AEM结构(2.1 m(3) h - 2m （-3) d(-1)）和CEM结构(0.4 m(3) h - 2m （-3) d(-1)）在I v时的性能差异很大。这种更好的性能主要是由于AEM结构的内阻（192 m ω m(2)）比CEM结构（435 m ω m(2)）低得多。这种较低的内阻可归因于离子通过AEM的传输阻力较低，而这是由两种膜的特性引起的。通过分析电阻的变化，可以确定MEC的限制，从而改进电池设计和提高产氢率。(C) 2009年国际氢能协会。Elsevier Ltd.出版。版权所有。
Previous studies have shown that Microbial Electrolysis Cells (MECs) perform better when an anion exchange membrane (AEM) than when a cation exchange membrane (CEM) separates the electrode chambers. Here, we have further studied this phenomenon by comparing two analysis methods for bio-electrochemical systems, based on potential losses and partial system resistances. Our study reconfirmed the large difference in performance between the AEM configuration (2.1 m(3) H-2 m(-3) d(-1)) and CEM configuration (0.4 m(3) H-2 m(-3) d(-1)) at I V. This better performance was caused mainly by the much lower internal resistance of the AEM configuration (192 m Omega m(2)) compared to the CEM configuration (435 m Omega m(2)). This lower internal resistance could be attributed to the lower transport resistance of ions through the AEM compared to the CEM caused by the properties of both membranes. By analyzing the changes in resistances the limitations in an MEC can be identified which can lead to improved cell design and higher hydrogen production rates. (C) 2009 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.