碳纳米点改性的钼酸镍复合材料的制备及其性能研究  

Synthesis and performance of carbon dots modified nickel molybdate composite

作　　者：杨瑞[1] 朱石林 于舒桐 贾丽华[1] YANG Rui;ZHU Shi-lin;YU Shu-tong;JIA Li-hua(College of Chemistry and Chemical Engineering,Qiqihar University,Heilongjiang Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006

出　　处：《齐齐哈尔大学学报（自然科学版）》2020年第6期10-12,17,共4页Journal of Qiqihar University(Natural Science Edition)

基　　金：黑龙江省省属高等学校基本科研业务费科研项目(135309116,135209103);齐齐哈尔大学大学生创新创业训练计划项目(201810232245,20201023282)。

摘　　要：以硝酸镍和钼酸钠为原料,采用水热法合成NiMoO4纳米材料,进一步用碳纳米点(CDs)对其进行改性,制备了NiMoO4/C纳米复合材料。利用X射线衍射(XRD)、扫描电子显微镜(SEM)以及电化学工作站对NiMoO4和NiMoO4/C复合材料进行表征和性能测试。结果表明,碳纳米点的加入,并未改变NiMoO4的晶格结构,仅使材料的形貌由棒状变成纳米片状。同时,NiMoO4和NiMoO4/C在CV曲线上均显示一对明显的氧化还原峰,且电压窗口为0~0.5 V,电流密度为1 A/g时,NiMoO4/C纳米材料的比电容为860 F/g明显高于单一的NiMoO4纳米材料。NiMoO4 nanomaterials were synthesized by hydrothermal method using nickel nitrate and sodium molybdate as raw materials.NiMoO4/C nanocomposites were further modified by carbon dots(CDs).NiMoO4 and NiMoO4/C composites were characterized and tested by X-ray diffraction(XRD),scanning electron microscope(SEM)and electrochemical workstation.The results showed that carbon dots don't change the lattice structure of NiMoO4,but only the morphology of the materials changed from rod shape to nanocrystals.At the same time,both NiMoO4 and NiMoO4/C had a pair of obvious redox peaks on the CV curves,and when the voltage window was 0-0.5 V,the specific capacitance of NiMoO4/C nanomaterials was 860 F/g at 1 A/g,which was significantly higher than that of the single NiMoO4 nanomaterials.

关 键 词：钼酸镍 碳纳米点 改性 超级电容器 

分 类 号：O657.3[理学—分析化学]