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In Situ Formation of Prussian Blue Analogue Nanoparticles Decorated with Three-Dimensional Carbon Nanosheet Networks for Superior Hybrid Capacitive Deionization Performance.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-09-03 , DOI: 10.1021/acsami.0c12421 Shiyong Wang 1 , Gang Wang 1 , Yuwei Wang 1 , Haoran Song 1 , Sihao Lv 1 , Tianzhu Li 2 , Changping Li 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-09-03 , DOI: 10.1021/acsami.0c12421 Shiyong Wang 1 , Gang Wang 1 , Yuwei Wang 1 , Haoran Song 1 , Sihao Lv 1 , Tianzhu Li 2 , Changping Li 1
Affiliation
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Capacitive deionization (CDI) is considered to be an alternative water purification technology because of its low cost and low driven energy. However, the desalination performance of traditional CDI still cannot meet the requirement of actual operations, which is the limited adsorption capacity of carbon electrodes. Here, we report a feasible and simple strategy for the synthesis of a three-dimensional hierarchical composite with homogeneous Prussian blue analogue nanoparticles, decorating hierarchical porous carbon nanosheet networks (NiHCF@3DC-2) as a redox-active intercalation electrode material for hybrid capacitive deionization (HCDI). The interconnected network structure, accompanied by its unique porous characteristic and uniform NiHCF nanoparticles, endows the prepared NiHCF@3DC-2 with enough straining space for alleviating the effect of volume change upon the regeneration process and guarantees fast transmission kinetics for both electrons and salt ions. As a consequence, an HCDI cell with NiHCF@3DC-2 and activated carbon showed superior desalination ability with a high ion removal capacity of 47.8 mg g–1 (107.5 mg g–1 NiHCF@3DC-2) and good cyclic regenerative performance. Moreover, the Na+ ions storage mechanism and the interfacial synergy of the NiHCF@3DC-2 were also explored by structure and electrochemistry analyses during the CDI process. Our work provides a promising redox-active intercalation electrode material to highly efficient hybrid capacitive deionization for brine.
中文翻译：
普鲁士蓝类似物纳米粒子的原位形成，并用三维碳纳米片网络装饰，具有优异的混合电容去离子性能。
电容去离子（CDI）由于其低成本和低驱动能量而被认为是一种替代的水净化技术。然而，传统的CDI的脱盐性能仍不能满足实际操作的要求，这是碳电极的吸附能力有限。在这里，我们报告了一种可行的简单策略，用于合成具有均质普鲁士蓝类似物纳米粒子的三维分层复合材料，装饰分层多孔碳纳米片网络（NiHCF @ 3DC-2）作为混合电容的氧化还原活性嵌入电极材料去离子（HCDI）。相互连接的网络结构，加上其独特的多孔特性和均匀的NiHCF纳米颗粒，使制备的NiHCF @ 3DC-2具有足够的应变空间，以减轻体积变化对再生过程的影响，并确保电子和盐离子的快速传输动力学。结果，具有NiHCF @ 3DC-2和活性炭的HCDI电池具有出色的脱盐能力和47.8 mg g的高离子去除能力–1（107.5 mg g –1 NiHCF @ 3DC-2）和良好的循环再生性能。此外，通过CDI过程中的结构和电化学分析，还探讨了NiHCF @ 3DC-2的Na +离子存储机理和界面协同作用。我们的工作为盐水的高效混合电容去离子提供了一种有前途的氧化还原活性嵌入电极材料。
更新日期：2020-09-03
中文翻译：
普鲁士蓝类似物纳米粒子的原位形成，并用三维碳纳米片网络装饰，具有优异的混合电容去离子性能。
电容去离子（CDI）由于其低成本和低驱动能量而被认为是一种替代的水净化技术。然而，传统的CDI的脱盐性能仍不能满足实际操作的要求，这是碳电极的吸附能力有限。在这里，我们报告了一种可行的简单策略，用于合成具有均质普鲁士蓝类似物纳米粒子的三维分层复合材料，装饰分层多孔碳纳米片网络（NiHCF @ 3DC-2）作为混合电容的氧化还原活性嵌入电极材料去离子（HCDI）。相互连接的网络结构，加上其独特的多孔特性和均匀的NiHCF纳米颗粒，使制备的NiHCF @ 3DC-2具有足够的应变空间，以减轻体积变化对再生过程的影响，并确保电子和盐离子的快速传输动力学。结果，具有NiHCF @ 3DC-2和活性炭的HCDI电池具有出色的脱盐能力和47.8 mg g的高离子去除能力–1（107.5 mg g –1 NiHCF @ 3DC-2）和良好的循环再生性能。此外，通过CDI过程中的结构和电化学分析，还探讨了NiHCF @ 3DC-2的Na +离子存储机理和界面协同作用。我们的工作为盐水的高效混合电容去离子提供了一种有前途的氧化还原活性嵌入电极材料。
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