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首页> 外文期刊>Environmental Science & Technology >Characterization of Resistances of a Capacitive Deionization System
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Characterization of Resistances of a Capacitive Deionization System

机译：电容去离子系统的电阻特性

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摘要

Capacitive deionization (CDI) is a promising desalination technology, which operates at low pressure, low temperature, requires little infrastructure, and has the potential to consume less energy for brackish water desalination. However, CDI devices consume significantly more energy than the theoretical thermody-namic minimum, and this is at least partly due to resistive power dissipation. We here report our efforts to characterize electric resistances in a CDI system, with a focus on the resistance associated with the contact between current collectors and porous electrodes. We present an equivalent circuit model to describe resistive components in a CDI cell We propose measurable figures of merit to characterize cell resistance. We also show that contact pressure between porous electrodes and current collectors can significantly reduce contact resistance. Lastly, we propose and test an alternative electrical contact configuration which uses a pore-filling conductive adhesive (silver epoxy) and achieves significant reductions in contact resistance.
机译：电容去离子（CDI）是一种有前途的脱盐技术，该技术可在低压，低温下运行，几乎不需要基础设施，并且有可能消耗较少的能量用于咸水淡化。但是，CDI设备消耗的能量比理论上的热力学最小值要多得多，这至少部分是由于电阻性功耗所致。我们在这里报告了我们为表征CDI系统中的电阻所做的努力，重点是与集电器和多孔电极之间的接触相关的电阻。我们提出了等效电路模型来描述CDI电池中的电阻组件。我们提出了可衡量的品质因数来表征电池电阻。我们还表明，多孔电极和集电器之间的接触压力可以显着降低接触电阻。最后，我们提出并测试了一种替代性的电接触配置，该配置使用了填充孔的导电胶（银环氧树脂）并实现了接触电阻的大幅降低。

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  • 来源
    《Environmental Science & Technology》 |2015年第16期|9699-9706|共8页
  • 作者

    Yatian Qu; Theodore F. Baumann; Juan G. Santiago; Michael Stadermann;

  • 作者单位

    Department of Mechanical Engineering, Stanford University Stanford, 440 Escondido Mall, Stanford, California 94305, United States ,Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States;

    Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States;

    Department of Mechanical Engineering, Stanford University Stanford, 440 Escondido Mall, Stanford, California 94305, United States;

    Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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