The Synergistic Effect of Space and Surface Charge on Nanoconfined Ion Transport and Nanofluidic Energy Harvesting
The Synergistic Effect of Space and Surface Charge on Nanoconfined Ion Transport and Nanofluidic Energy Harvesting
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空间和表面电荷对纳米约束离子传输和纳米流体能量收集的协同效应
DOI：
10.1016/j.nanoen.2021.106709
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发表时间：
2021-11
期刊：
影响因子：
17.6
通讯作者：
Wen Liping
中科院分区：
文献类型：
--
作者：
Wu Yadong;Zhou Teng;Wang Hao;Qian Yongchao;Chen Weipeng;Zhu Congcong;Niu Bo;Kong Xiang‐Yu;Zhao Yifei;Lin Xiangbin;Jiang Lei;Wen Liping
在构建离子通道激发的纳米受限系统以获得高的纳米流体能量转换性能方面，不同的纳米受限离子输运行为引起了越来越多的关注。传统的纳米流体系统不能同时获得高离子选择性和高离子通量在一个大的区域，由于双电层（EDL）的带电表面上形成的效果下降。在这里，空间电荷被引入到纳米受限系统中，通过利用表面和空间电荷的协同效应来有效地解决这个问题。首次将电荷效应对离子输运的贡献分解为表面电荷、空间电荷和协同效应。在较小直径的通道中，表面电荷诱导EDL内的电荷分离，而在较大直径的通道中，空间电荷通过离子交换机制主导离子选择性。通过理论模拟结果系统地分析了在大（约100 nm）、短纳米通道（约100 nm）和高浓度倍数（约1000倍）条件下，由EDL和离子交换效应贡献的协同效应对于实现高离子选择性、离子通量和纳米流体能量转换性能是极其重要的。这些结果揭示了增强离子输运行为的机制，并为设计高性能的纳米流体器件在脱盐，传感器，能量转换和存储领域提供了坚实的基础。
Diverse nanoconfined ion transport behaviors have attracted increasing attention in constructing ion-channel-inspired nanoconfined systems for high nanofluidic energy conversion performance. Conventional nanofluidic systems cannot simultaneously obtain high ion-selectivity and high ion-flux in a large region due to the decreasing effect of the electrical double layer (EDL) formed on the charged surface. Here, space charge is introduced in the nanoconfined system to effectively solve this problem by employing the synergistic effect of surface and space charges. The charge effect contribution on controlled-ion-transport is further decoupled into surface charge, space charge and synergistic effects for the first time. The surface charge induces charge separation within the EDL in a smaller diameter channel while the space charge dominates the ion-selectivity by the ion-exchange mechanism in a larger diameter channel. The synergistic effect, contributed by EDL and ion-exchange effects, is extremely important in large (around 100 nm), short nanochannel (around 100 nm), and high concentration fold (around 1000-fold) conditions to achieve high ion-selectivity, ion-flux, and nanofluidic energy conversion performances, which is systematically analyzed by theoretical simulation results. These results reveal the mechanism for enhanced ion transport behaviors and provide a solid foundation for designing high-performance nanofluidic devices in fields of desalination, sensor, energy conversion and storage.
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影响因子：
13.3
作者：
Yadong Wu;Weiwen Xin;Xiangyu Kong;Jianjun Chen;Yongchao Qian;Yue Sun;Xiaolu Zhao;Weipeng Chen-Weipeng-Che
通讯作者：
Yadong Wu;Weiwen Xin;Xiangyu Kong;Jianjun Chen;Yongchao Qian;Yue Sun;Xiaolu Zhao;Weipeng Chen-Weipeng-Che
影响因子：
64.8
作者：
Schroeder TBH;Guha A;Lamoureux A;VanRenterghem G;Sept D;Shtein M;Yang J;Mayer M
通讯作者：
Mayer M
影响因子：
27.8
作者：
Chen Cheng;Liu Dan;Lei Weiwei
通讯作者：
Lei Weiwei
影响因子：
38.3
作者：
Epsztein, Razi;DuChanois, Ryan M.;Elimelech, Menachem
通讯作者：
Elimelech, Menachem
影响因子：
9.5
作者：
Ma, Tianji;Balanzat, Emmanuel;Balme, Sebastien
通讯作者：
Balme, Sebastien