Controlling Fuel Crossover in Open Electrochemical Cells by Tuning the Water Nanochannel for Power Generation,ACS Sustainable Chemistry & Engineering

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Controlling Fuel Crossover in Open Electrochemical Cells by Tuning the Water Nanochannel for Power Generation
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-05-20 , DOI: 10.1021/acssuschemeng.0c01013
Seung-Young Choi ₁ , Prem P. Sharma ₁ , Syed Abdullah Shah ₂ , Rahul Singh ₁ , Daejoong Kim ₂ , Kyeong-Sik Jin ₃

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High-performance electrochemical devices require a specific size of nanochannel in ion-exchange membranes for producing stable cell performance. We have tuned the size of the water nanochannel by varying the ion-exchange capacity of the membrane. It influences the current density of electrochemical devices. Here, we have demonstrated large-area dual-purpose membranes, implemented in reverse electrodialysis and fuel cell systems for generating power. The selectivity, compatibility, and flexibility of the membrane with the electrode are outstanding and have been explained in great detail. In this article, we have illustrated a novel combination of sPEEK/FAA-3 membranes for reverse electrodialysis applications as a cation and an anion. The membrane can freely withstand structural stability and durability at high temperatures under hydrated conditions and offers excellent results in the fuel cell. We achieve superior performance for both fuel cells and reverse electrodialysis cells without altering the device architecture. Membranes with varying ion-exchange capacity (IEC) values and their electrochemical applications at one platform contribute to paving the path for enhancing the device performance.

中文翻译：

通过调节水纳米通道发电来控制开放式电化学电池中的燃料交换

高性能电化学装置需要离子交换膜中特定尺寸的纳米通道，以产生稳定的电池性能。我们已经通过改变膜的离子交换能力来调节水纳米通道的大小。它影响电化学装置的电流密度。在这里，我们展示了大面积的两用膜，该膜在反向电渗析和燃料电池系统中用于发电。膜与电极之间的选择性，相容性和柔韧性非常出色，并已进行了详细说明。在本文中，我们说明了用于反向电渗析应用的sPEEK / FAA-3膜的新颖组合，包括阳离子和阴离子。该膜可在高温，水合条件下自由承受结构稳定性和耐久性，并在燃料电池中提供出色的结果。我们在不改变设备架构的情况下，实现了燃料电池和反向电渗析电池的卓越性能。具有不同离子交换容量（IEC）值的膜及其在一个平台上的电化学应用有助于铺平增强设备性能的道路。

更新日期：2020-05-20

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