一步水热法制备MoO3纳米带/还原氧化石墨烯及其电化学性能  

Synthesis of MoO3 nanobelts/reduced graphene oxide by one-step hydrothermal method and the corresponding electrochemical properties

作　　者：吕星 罗成 梁桂杰[3] LÜXing;LUO Cheng;LIANG Guijie(College of Science and Technology,Hubei University of Arts and Science,Xiangyang 441053,China;School of Materials Science and Engineering,Hubei University of Automotive Technology,Shiyan 442002,China;Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices,Hubei University of Arts and Science,Xiangyang 441053,China)

机构地区：[1]湖北文理学院理工学院,襄阳4410532 [2]湖北汽车工业学院材料科学与工程学院,十堰4420023 [3]湖北文理学院低维光电材料与器件湖北省重点实验室,襄阳441053

出　　处：《粉末冶金技术》2024年第4期388-395,402,共9页Powder Metallurgy Technology

摘　　要：为了提高超级电容器电极材料三氧化钼(MoO_(3))的储能性能,通过一步水热法合成了MoO3纳米带/还原氧化石墨烯(reduced graphene oxide,RGO)复合材料,研究了水热法对复合材料的组织结构及电化学性能的影响。利用X射线衍射分析、扫描电子显微形貌观察、傅里叶变换红外光谱分析、循环伏安曲线、恒流充放电曲线等方法对材料的物相、形貌及电化学性能进行了表征。结果显示,通过一步水热法成功制得MoO_(3)纳米带/RGO复合材料,复合前MoO_(3)比电容为228 F∙g^(‒1),复合后比电容提高了17.5%。复合材料中MoO_(3)纳米带被还原氧化石墨烯包裹或者附着在还原氧化石墨烯表面,增强了材料的导电性并使其结构更稳定,从而提升了电化学性能。To improve the energy storage performance of MoO_(3) as the supercapacitor electrode materials,the MoO_(3) nanoribbon/reduced graphene oxide(RGO)composites were synthesized by one-step hydrothermal method.The phase structure,microstructure,and electrochemical properties of the composites were characterized by X-ray diffraction analysis,scanning electron microscopy,Fourier transform infrared spectroscopy,cyclic voltammetry curves,and constant current charge discharge curves.The results show that,the MoO_(3) nanoribbon/RGO composites are successfully fabricated by the one-step hydrothermal method.Encouragingly,the specific capacitance of the composite materials is increased by 17.5%,compared with that of pure MoO_(3) as 228 F∙g^(‒1).Furthermore,the MoO3 nanoribbons are wrapped by RGO or attached to the surface of RGO in the composites,enhancing the electrical conductivity and structure stability,and then improving the electrochemical performance.

关 键 词：三氧化钼 水热合成 氧化石墨烯 超级电容器 比电容 

分 类 号：TG142.71[一般工业技术—材料科学与工程]