High figure of merit for electrokinetic energy conversion in Nafion membranes
High figure of merit for electrokinetic energy conversion in Nafion membranes
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DOI：
10.1016/j.jpowsour.2013.08.067
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发表时间：
2014-02-01
影响因子：
9.2
通讯作者：
Bentien, Anders
中科院分区：
文献类型：
--
作者：
Kilsgaard, Bjorn Sjogren;Haldrup, Sofie;Bentien, Anders
基于流动势系数、水力渗透率和离子电导率的测量，对纳米孔离子导电 Nafion (R) 117 聚合物膜的动电能量转换进行了评估。在 0.03 M LiCl 水溶液中发现了 1.1 +/- 0.2 的高品质因数，对应于约 18 +/- 2% 的动电能量转换效率。据我们所知，这是文献中第一项针对孔具有高表面电荷密度的材料中动电能量转换的研究。初步结果对于未来的动电发电机或泵应用来说是有希望的，并且高电荷聚合物膜可能是低成本高效率动电能量转换的未来途径。 (C) 2013 Elsevier B.V. 保留所有权利。
Based on measurements of the streaming potential coefficient, hydraulic permeability and ion conductivity the electrokinetic energy conversion of nanoporous ion conductive Nafion (R) 117 polymer membrane has been evaluated. A high figure-of-merit of 1.1 +/- 0.2 has been found in 0.03 M aqueous LiCl solution that corresponds to an electrokinetic energy conversion efficiency of approximately 18 +/- 2%. To the best of our knowledge, this is the first study in the literature designated to the electrokinetic energy conversion in materials where the pores have high surface charge density. The initial results are promising with respect to future electrokinetic generator or pump applications and highly charged polymer membranes might be a future pathway for low-cost high-efficiency electrokinetic energy conversion. (C) 2013 Elsevier B.V. All rights reserved.