催化裂解聚丙烯合成石墨烯碳纳米杂化材料及其电化学应用

Synthesis of Graphene-based Carbon Nano Hybrid Materials by Catalytic Cracking of Polypropylene and Study on the Applications in Electrochemistry

研究了氧化石墨烯(GO)负载Co-Ni催化剂原位催化聚丙烯(PP)进行三维石墨烯碳纳米杂化材料的合成,同时考察材料作为超级电容器电极的电化学应用。将乙酸钴和乙酸镍按比例加入GO水溶液中,利用聚醚胺400(D-400)将二者还原为氢氧化物并自组装负载在GO表面,制备出GO负载Co-Ni催化剂(GO/Ni-Co)。将GO/Ni-Co熔融共混到PP中,在氮气保护下裂解碳化共混得到石墨烯基碳纳米杂化材料。采用SEM、TEM、XRD和Raman等对其形貌结构进行表征。结果表明:利用该方法可成功制备一种三维石墨烯碳纳米杂化材料(RGO/C)。将所制备的RGO/C应用于超级电容器,在扫描速率为2m V/s时,最大比电容达到595F/g,并且具有良好的循环稳定性。

In the presence of graphene oxide（GO）-supporting Co-Ni catalysts, a kind of graphene-based carbon nano hybrid materials was syn-thesized by catalytic cracking of polypropylene, and the electrochemical application of this material as a super capacitor was investigated. Firstly, the cobalt acetate and nickel acetate with a certain proportion were dispersed into GO aqueous solution, and then the polyetheramine-400（D-400） was applied to reduce nickel acetate and cobalt acetate to hydroxides on the surface of GO layers, after that a kind of GO-supporting Co-Ni catalysts was prepared. The GO/Co-Ni catalyst was melt blended into polypropylene, and after the cracking carbonization, the graphene-based carbon nano hybrid materials were obtained（RGO/C）. The SEM, TEM, XRD and Raman techniques were used to characterize the morphology and structure of RGO/C.The results demonstrated that a kind of RGO/C had been successfully synthesized via this method. At last, the RGO/C was used as the super capaci-tor. When the scan speed was 2 m V/s, the maximum specific capacitance of RGO/C was 595 F/g and it had good cycle stability.