Anion-exchange membranes derived from main group and metal-based cations
Anion-exchange membranes derived from main group and metal-based cations
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DOI：
10.1016/j.polymer.2022.124811
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发表时间：
2022-04
期刊：
影响因子：
4.6
通讯作者：
Megan Treichel;Jamie C. Gaitor;C. Birch;Jessica L. Vinskus;Kevin J. T. Noonan
中科院分区：
文献类型：
--
作者：
Megan Treichel;Jamie C. Gaitor;C. Birch;Jessica L. Vinskus;Kevin J. T. Noonan
由于阴离子交换膜在电化学能量系统中的离子传输方面的潜在用途，阴离子交换膜（AEM）的设计和合成已经吸引了大量的关注。AEM是聚合物电解质，其具有共价结合到聚合物主链的带正电荷的基团，该聚合物主链可以传导氢氧化物或其他阴离子。绝大多数AEM基于铵基团（+NR4），但围绕这些官能团对氢氧化物的长期稳定性的问题导致了对其他阳离子替代品的研究。在这篇综述中，我们强调了一些最近的努力与阳离子来自无机元素，特别强调磷，锍，和金属基阳离子的AEM。这些研究证明了无机结构单元用于构建新型AEM的潜力，相对于其铵类似物具有独特的性质。
The design and synthesis of anion-exchange membranes (AEMs) has attracted a great deal of attention given the potential utility of these materials for ion transport in electrochemical energy systems. AEMs are polymer electrolytes with positively charged groups covalently bound to a polymer backbone that can conduct either hydroxide or other anions. The vast majority of AEMs are based on ammonium groups (+NR4) but questions surrounding the long-term stability of these functionalities to hydroxide has led to examination of other cation alternatives. In this review, we highlight some of the recent efforts towards AEMs with cations derived from inorganic elements, with a specific emphasis on phosphonium, sulfonium, and metal-based cations. These studies demonstrate the potential of inorganic building blocks for construction of novel AEMs, with unique properties relative to their ammonium analogues.