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Enhanced capacitive desalination of MnO2 by forming composite with multi-walled carbon nanotubes

机译：通过用多壁碳纳米管形成复合材料来增强MNO2的电容性脱盐

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The morphology and structure of the prepared MnO _(2) /MWCNTs (multi-walled carbon nanotubes) composite are characterized by XRD, SEM, TEM, and N _(2) sorption analysis. The electrochemical performance of the composite is studied by cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge/discharge evaluation. The composite has a specific capacitance of 144 F g ~(?1) at the current density of 1 A g ~(?1) . It has higher conductivity which is affirmed by electrochemical impedance spectroscopy (EIS). The capacitive deionization (CDI) test was conducted in a bath mode apparatus by assembling a capacitor. The capacitor made from MnO _(2) /MWCNTs composite shows a higher desalination capacity of (6.65 mg g ~(?1) ) in NaCl aqueous solution, higher than that made from the virginal MnO _(2) (1.60 mg g ~(?1) ) and those of the formerly reported. Furthermore, the MnO _(2) /MWCNTs composite electrode shows excellent recyclability with an efficient and rapid regeneration process.
机译：制备的MNO _（2）/ mWCNT（多壁碳纳米管）复合材料的形态和结构特征在于XRD，SEM，TEM和N _（2）吸附分析。通过循环伏安法，电化学阻抗光谱和电镀电荷/放电评估研究了复合材料的电化学性能。复合材料的特定电容为144f g〜（α1），其电流密度为1 a g〜（α1）。它具有更高的导电性，该电导率由电化学阻抗光谱（EIS）肯定。通过组装电容器在浴模式装置中在浴模式装置中进行电容去离子化测试。由MNO _（2）/ mWCNTS复合材料制成的电容器在NaCl水溶液中（6.65mg g〜（α1））的脱盐能力高于来自维根MnO _（2）制成的（1.60mg g〜 （？1））和以前报道的那些。此外，MNO _（2）/ MWCNTS复合电极显示出具有高效且快速的再生过程的优异再循环性。

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