水热法制备还原氧化石墨烯/NiO复合材料及电化学性能研究  

Electrochemical properties of the reduced graphene oxide/NiOcomposites prepared by hydrothermal method

作　　者：刘金鑫 孙伟 辛国祥 邢艳伟 胡文博 LIU Jinxin;SUN Wei;XIN Guoxiang;XING Yanwei;HU Wenbo(School of Materials Science and Engineering,Inner Mongolia University of Science&Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学材料科学与工程学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2024年第4期353-358,共6页Journal of Inner Mongolia University of Science and Technology

基　　金：内蒙古自治区自然科学基金(2021MS05011,2020ZD17,2019MS02023)。

摘　　要：采用一步水热法成功合成了还原氧化石墨烯/氧化镍(RGO/NiO)复合材料。采用X射线衍射仪、扫描电镜、透射电镜等进行表征分析,结果显示NiO纳米棒被锚定在石墨烯片表面,表明了RGO/NiO复合材料的成功制备。由于RGO的高电子转移速率以及NiO纳米棒与RGO的有效结合,该复合材料在0.5 A·g^(-1)时具有1100 F·g^(-1)的高比容,经10000次恒流充放电循环,RGO/NiO电容保持率仍能达到90.1%,表明其拥有良好的循环寿命。总之,这种复合电极材料制备过程环保,具有很大的应用潜力,特别是在超级电容器电极方面的应用前景广阔。In this paper,reduced graphene oxide/nickel oxide(RGO/NiO)composites was successfully synthesized by using a one-step hydrothermal method.X-ray diffraction meter,scanning electron microscopy,transmission electron microscopy,etc.were used for characterization analysis.The results showed that NiO nanorods were anchored to the surface of graphene sheets,indicating the successful preparation of RGO/NiO composites.Due to the high electron transfer rate of RGO and the effective bonding of NiO nanorods with RGO,the composite has a high specific capacitance of 1100 F·g^(-1) at 5 A·g^(-1),and the RGO/NiO capacitance retention rate can still reach 90.1%after 10,000 constant current charge/discharge cycles,indicating its good cycle life.In conclusion,this composite electrode material is environmentally friendly in preparation and has great application potential,especially in supercapacitor electrodes.

关 键 词：氧化镍 还原氧化石墨烯 水热法 超级电容器 

分 类 号：TQ150.4[化学工程—电化学工业]