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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Nitrogen-doped carbon nanorods with excellent capacitive deionization ability
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Nitrogen-doped carbon nanorods with excellent capacitive deionization ability

机译：氮掺杂碳纳米棒具有出色的电容去离子能力

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摘要

Nitrogen-doped carbon nanorods (NCNRs) were prepared from naturally based nanocrystalline cellulose through simple freeze drying and subsequent thermal treatment under an ammonia atmosphere at different temperatures. The morphology, structure and electrochemical performance of the NCNRs were characterized using scanning electron microscopy, transmission electron microscopy, nitrogen adsorption-desorption, X-ray photoelectron spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy, and their electrosorption performance in NaCl solution was studied. The results show that NCNRs treated at 1000 degrees C exhibit an extremely high electrosorption capacity of 17.62 mg g(-1) when the initial NaCl concentration is 500 mg l(-1), which shows great improvement compared with their undoped counterparts. The nitrogen doping proved to be a very effective method for improving the electrosorption performance, and the NCNRs should be very promising candidates as electrode materials for CDI applications.
机译：通过简单的冷冻干燥和随后在氨气中于不同温度下进行热处理，由天然纳米晶纤维素制备氮掺杂碳纳米棒（NCNR）。通过扫描电子显微镜，透射电子显微镜，氮吸附-脱附，X射线光电子能谱，循环伏安法和电化学阻抗谱等手段表征了NCNRs的形貌，结构和电化学性能，并研究了它们在NaCl溶液中的电吸附性能。结果表明，当初始NaCl浓度为500 mg l（-1）时，在1000摄氏度处理的NCNRs表现出17.62 mg g（-1）的极高电吸附容量，与未掺杂的同类产品相比，显示出很大的改善。事实证明，氮掺杂是提高电吸附性能的一种非常有效的方法，而NCNR作为CDI应用的电极材料应该是非常有前途的候选材料。

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