文献类型：期刊文献

中文题名：(CoFe)Se_(2)@NC超级电容器电极材料的制备及其电化学性能

英文题名：Preparation of(CoFe)Se_(2)@NC Electrode Material and Its Electrochemical Properties in Supercapacitors

作者：李宽[1];肖倩[1];卞梓垚[1];李凯楠[1];赵匡健[1];曹海静[1];朱燕艳[1];方泽波[2]

机构：[1]上海电力大学数理学院,上海200090;[2]绍兴文理学院数理信息学院,浙江绍兴312000

年份：2022

卷号：59

期号：2

起止页码：133

中文期刊名：微纳电子技术

外文期刊名：Micronanoelectronic Technology

收录：CSTPCD、、北大核心、北大核心2020

基金：国家自然科学基金资助项目(51672172,51872186)。

语种：中文

中文关键词：超级电容器;纳米材料;复合材料;共沉淀法;金属-有机框架(MOF);电化学储能

外文关键词：supercapacitor;nano material;composite;coprecipitation method;metal-organic framework(MOF);electrochemical energy storage

中文摘要：金属-有机框架(MOF)衍生的过渡金属硒化物和多孔碳纳米复合材料具有巨大的储能优势,是应用于电化学储能的优良电极材料。采用共沉淀法制备CoFe类普鲁士蓝(CoFe-PBA)纳米立方,并通过静电组装在CoFe-PBA上包覆聚吡咯(PPy)得到CoFe-PBA@PPy;通过在400℃氮气中退火并硒化成功制备了氮掺杂的碳(NC)包覆(CoFe)Se_(2)的(CoFe)Se_(2)@NC纳米复合材料,并对其结构和形貌进行了表征。以(CoFe)Se_(2)@NC为电极制备了超级电容器,测试了其电化学性能,结果表明,在电流密度1 A/g时超级电容器的比电容达到1047.9 F/g,在电流密度5 A/g下1000次循环后具有良好的循环稳定性和96.55%的比电容保持率。由于其性能优越、无毒、成本低和易于制备,未来(CoFe)Se_(2)@NC纳米复合材料在超级电容器中具有非常大的应用潜力。

外文摘要：Metal-organic framework(MOF)derived transition metal selenides and porous carbon nanocomposites have great energy storage advantages,and are the superb electrode materials for electrochemical energy storage applications.CoFe-prussian blue analogue(CoFe-PBA)nanocube was prepared by the coprecipitation method,and CoFe-PBA@PPy was obtained with polypyrrole(PPy)coated on CoFe-PBA by electrostatic assembly.(CoFe)Se_(2)@NC nanocomposites with nitrogen doped carbon(NC)coated on(CoFe)Se_(2)were successfully prepared by annealing and selenidation in nitrogen at 400℃.The structure and morphology of(CoFe)Se_(2)@NC nanocompo-sites were characterized.By using(CoFe)Se_(2)@NC as electrode,the supercapacitors were prepared,and their electrochemical properties were tested.The results show that the specific capacitance of the supercapacitor reaches 1047.9 F/g at 1 A/g current density,and the supercapacitors have good cycle stability and 96.55%specific capacitance retention rate after 1000 cycles at 5 A/g current density.Due to their superior performance,non-toxic,low cost and easy preparation,(CoFe)Se_(2)@NC nanocomposites have great application potential in supercapacitor in the future.