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首页> 外文期刊>Environmental Science & Technology >Use of Soft Electrodes in Capacitive Deionization of Solutions
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Use of Soft Electrodes in Capacitive Deionization of Solutions

机译：在溶液的电容去离子中使用软电极

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摘要

All efforts to obtain, reuse or purify water are extremely significant for society. Recently, researchers have begun to delve in an idea born decades ago: the desalination of water using highly porous electrodes. It is based on a fundamental aspect of electrical double layers, namely, their huge capacitance. The ions of a solution can be partially removed under the application of an electric field when the solution fills the space between porous electrodes, either bare (CDI, or capacitive deionization), coated with ionic exchange membranes (MCDI) or chemically treated (inverted-CDI or i-CDI). One of the challenges of the last years was to explore new materials and arrangements to improve the efficiency of the system. In this work, we propose a new approach inspired in the electrokinetics of soft particles: a layer of polyelectrolyte (cationic on one electrode, anionic on the opposite one) coats the carbon electrodes, converting them in a sort of "soft" electrode pair. We present a theoretical model and a set of experiments showing how soft electrodes can be successfully employed in capacitive deionization.
机译：获得，再利用或净化水的所有努力对社会都极为重要。最近，研究人员开始研究数十年前诞生的想法：使用高度多孔的电极对水进行脱盐。它基于双电层的基本方面，即其巨大的电容。当溶液充满多孔电极之间的空间时，溶液中的离子可以在电场的作用下被部分除去，该多孔电极可以是裸露的（CDI或电容性去离子），涂有离子交换膜（MCDI）的或经过化学处理的（倒置的CDI或i-CDI）。过去几年的挑战之一是探索新材料和安排以提高系统效率。在这项工作中，我们提出了一种启发软粒子电动动力学的新方法：在碳电极上覆盖一层聚电解质（一个电极上为阳离子，另一电极上为阴离子），将其转换为“软”电极对。我们提出了一个理论模型和一组实验，展示了如何在电容去离子中成功使用软电极。

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  • 来源
    《Environmental Science & Technology》 |2017年第9期|5326-5333|共8页
  • 作者

    Silvia Ahualli; Guillermo R. Iglesias; María Μ. Fernández; María L. Jiménez; Angel V. Delgado;

  • 作者单位

    Department of Applied Physics, School of Science, Campus Fuentenueva University of Granada, 18071 Granada, Spain;

    Department of Applied Physics, School of Science, Campus Fuentenueva University of Granada, 18071 Granada, Spain;

    Department of Applied Physics, School of Science, Campus Fuentenueva University of Granada, 18071 Granada, Spain;

    Department of Applied Physics, School of Science, Campus Fuentenueva University of Granada, 18071 Granada, Spain;

    Department of Applied Physics, School of Science, Campus Fuentenueva University of Granada, 18071 Granada, Spain;

  • 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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