High performance capacitive deionization using modified ZIF-8-derived, N-doped porous carbon with improved conductivity
High performance capacitive deionization using modified ZIF-8-derived, N-doped porous carbon with improved conductivity
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DOI：
10.1039/c8nr02288g
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发表时间：
2018-08-21
期刊：
影响因子：
6.7
通讯作者：
Wu, Kevin C-W
中科院分区：
文献类型：
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作者：
Li, Yang;Kim, Jeonghun;Wu, Kevin C-W
沸石咪唑骨架（ZIF）复合材料衍生的碳具有大表面积和高微孔体积，被证明是用于电容去离子（CDI）应用的有前途的电极材料。然而，氮掺杂多孔碳颗粒仍然存在一些固有的严重问题（例如低电导率、窄孔径、相对较低的孔体积等），这限制了其CDI性能。为了解决上述问题，本文制备了金纳米粒子嵌入的ZIF-8衍生的氮掺杂碳，在800摄氏度下煅烧（Au@NC800）和PEDOT掺杂的NC-800（NC800-PEDOT）。新生成的NC800-PEDOT和Au@NC800电极的电导率显着提高，并且还分别实现了16.18 mg g(-1)和14.31 mg g(-1)的高电吸附容量，远高于NC800(8.36 mg g(-1))。 Au@NC800和NC800-PEDOT有望作为高效CDI电极材料。
Zeolitic imidazolate framework (ZIF) composite-derived carbon exhibiting large surface area and high micropore volume is demonstrated to be a promising electrode material for the capacitive deionization (CDI) application. However, some inherent serious issues (e.g., low electrical conductivity, narrow pore size, relatively low pore volume, etc.) are still observed for nitrogen-doped porous carbon particles, which restrict their CDI performance. To solve the above-mentioned problems, herein, we prepared gold-nanoparticle-embedded ZIF-8-derived nitrogen-doped carbon calcined at 800 degrees C (Au@NC800) and PEDOT doped-NC-800 (NC800-PEDOT). The newly generated NC800-PEDOT and Au@ NC800 electrodes exhibited notably increased conductivity, and they also achieved high electrosorption capacities of 16.18 mg g(-1) and 14.31 mg g(-1), respectively, which were much higher than that of NC800 (8.36 mg g(-1)). Au@NC800 and NC800-PEDOT can be promisingly applicable as highly efficient CDI electrode materials.