Tungsten carbide nanoparticles synthesized by new solution plasma method and its application

本研究采用一种新的溶液等离子体法制备了碳化钨纳米颗粒，用于超硬材料和电容器电极材料。通过加氢处理很难完全去除碳杂质，因此将碳化钨样品在800 ~ 1100℃的氢气流中加热以去除碳杂质。氢气处理成功地去除了碳杂质。但由于颗粒之间是相互烧结的，因此认为这个烧结问题需要在以后的研究中加以考虑。用循环伏安法研究了在苯溶液中合成的碳化钨样品作为电容器电极材料的应用。从循环伏安图来看，碳化钨样品有可能用作电容器电极材料。

In this study, tungsten carbide nanoparticles were synthesized by a new solution plasma method for the applications of super-hard material and capacitor electrode material. It was difficult to remove completely carbon impurities by a hydro-treatment, hence the tungsten carbide samples were heated in hydrogen gas flow at the temperatures from 800 to 1100 oC to remove carbon impurities. This hydrogen gas treatment was successful to remove carbon impurities. However, the particles were sintered each other, so it was considered that this sintering problem has to be considered in future. The tungsten carbide sample synthesized in benzene liquid was investigated for the application of capacitor electrode material using cyclic voltammetry. From the cyclic voltammogram, it was suggested that the tungsten carbide sample had a possibility to be used as a capacitor electrode material.