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采用一步水热法合成二氧化锰/氧化石墨烯(部分还原)纳米复合材料。实验中,以高锰酸钾、硫酸锰和氧化石墨烯溶液分别作为氧化剂、还原剂以及复合剂。对样品进行了透射电子显微镜、X射线衍射、拉曼光谱等表征。结果表明,与其他合成工艺相比,该方法不仅工艺简单,而且还可以极大地提高二氧化锰纳米颗粒的电化学性能。由于没有碳源的消耗,该方法制得的纳米复合材料可以极大地增加二氧化锰和氧化石墨烯之间的活性接触位点和提高二氧化锰的利用率。此种方法对于提高金属氧化物电容性能是一种非常有效的手段,并且有望应用于大规模制备超级电容器金属氧化物复合电极材料。
One Step Hydrothermal Synthesis of Manganese Dioxide / Graphene Oxide (Partially Reduced) Nanocomposites. In the experiment, potassium permanganate, manganese sulfate and graphene oxide were used as oxidant, reductant and complexing agent respectively. The samples were characterized by transmission electron microscopy, X-ray diffraction, Raman spectroscopy. The results show that compared with other synthetic processes, this method not only has a simple process, but also can greatly improve the electrochemical performance of the manganese dioxide nanoparticles. Due to the absence of carbon source consumption, the nanocomposites produced by this method can greatly increase the active contact sites between manganese dioxide and graphene oxide and increase the utilization of manganese dioxide. This method is a very effective method to improve the performance of metal oxide capacitors and is expected to be applied to large-scale preparation of supercapacitor metal oxide composite electrode materials.