In this work, carbon polyhedron and carbon nanotube hybrids (HCN) have been synthesized by employing ZIF-67 as precursor for electrochemical supercapacitor and capacitive deionization (CDI). Basically, uniform polyhedral nanocrystals of ZIF-67 were firstly fabricated, and then they were directly subjected to chemical vapor deposition for growing carbon nanotubes. It is found that the as-fabricated HCN electrode exhibits remarkable electrochemical performance, i.e. the highest capacitance of 343 F g⁻¹ at the scan rate of 10 mV s⁻¹ and excellent rate capability. This is due to that HCN can provide rich space and short ion diffusion path. Moreover, the HCN electrodes shows superior CDI performance, i.e. the electrosorption capacity reached as high as 7.08 mg g⁻¹ and the adsorption rate of 0.03958 mg g⁻¹·min⁻¹.

在这项工作中，通过使用ZIF-67作为电化学超级电容器和电容去离子（CDI）的前体，合成了碳多面体和碳纳米管杂化体（HCN）。基本上，首先制备ZIF-67的均匀多面体纳米晶体，然后直接对其进行化学气相沉积以生长碳纳米管。据发现，作为制造的HCN电极表现出显着的电化学性能，即343 F G最高的电容^-1以10毫伏S中的扫描速率^-1和优异的倍率性能。这是因为HCN可以提供丰富的空间和较短的离子扩散路径。此外，HCN电极显示出优异的CDI性能，即电吸附容量高达7.08 mg g ^-1吸附速率为0.03958 mg g ^-1 ·min ^-1。