摘要
采用水热合成法,在Ni-Co层状双氢氧化物中掺杂不同浓度的钇.通过傅里叶变换红外光谱法、X射线粉末衍射法、扫描电子显微镜、比表面积和孔隙度分析仪对其结构及微观形态进行表征,电化学工作站对目标材料进行电化学性能测试.结果表明:掺杂浓度为0.03mmolY^(3+)时NiCo双金属氢氧化物效果最优,比表面积可达74.9198±0.2762 m^2·g^(-1),比电容值为380F·g^(-1),电容保持率达到了70%.说明掺杂Y^(3+)可以有效改善Ni-Co层状双氢氧化物电化学性能,可以成为良好的超级电容器储备材料.
Different concentrations of Y^3+ was doped in Ni-Co layered dihydroxide by hydrothermal synthesis. The structure and microstructure of the material were characterized by using FT-IR,X-ray,SEM,specific surface area and porosity analyzer,and electrochemical performance was measured by electrochemical workstation. The results show that the Ni-Co double hydroxide is the best when the doping concentration is 0.03mmol Y^3+,and the specific sur-face area can reach 74.9198.±0.2762 m^2·g^-1,the specific capacitance value is 380F·g^-1,and the capacitance reten-tion rate is 70%. It indicates that doping Y^3+ can effectively improve the electrochemical performance of Ni-Co layered double hydroxide,which can be a good supercapacitor reserve material. Supercapacitors stock material.
作者
任雪峰
齐亚娥
金小青
温娜
严丽红
Ren Xue-feng;Qi Yae;Jin Xiao-qing;Wen Na;Yan Li-hong(College of Chemistry and Chemical Engineering,Hexi University,Zhangye Gansu 734000;College of Chemistry and Chemical Engineering,Lanzhou City University,Lanzhou Gansu 734070;Gansu Key Laboratory of Characteristic Resources Utilization of Hexi Corridor,Zhangye Gansu 734000)
出处
《河西学院学报》
2019年第2期16-23,共8页
Journal of Hexi University
基金
甘肃省河西走廊特色资源利用重点实验室面上项目(项目编号:XZ1801)
关键词
层状双氢氧化物
稀土离子
掺杂
超级电容器
Layered double hydroxides
Rare earth ions
Doping
Supercapacitors
