目录
摘要II
关键词II
AbstractIII
引言
引言1
1 材料与方法3
1.1 实验试剂与实验仪器3
1.1.1 实验试剂3
1.1.2 实验仪器3
1.2 材料的合成3
1.2.1 溶液的配制3
1.2.2 CoTATB的制备4
1.2.3 CoTATB/CNFs的制备4
1.3 材料的表征4
1.4 材料电极制备4
1.4.1 电极的制备4
1.4.2 工作电极的制备4
1.5 电化学性能测试5
1.5.1 循环伏安法5
1.5.2 恒流充放电法5
2 结果与分析6
2.1 CoTATB及其衍生物的表征6
2.1.1 扫描电镜结果及分析6
2.1.2 能谱结果及分析6
2.1.3 X射线衍射结果及分析8
2.1.4 红外图谱结果及分析8
2.2 CoTATB及其衍生物的电化学性能8
2.2.1 循环伏安法测试结果及分析9
2.2.2 恒流充放电测试结果及分析9
3 讨论 10
致谢11
参考文献12
CoMOFs及其衍生物的合成与超电容性能研究
摘 要
本实验中使用一步合成法制备目标材料，用乙醇和去离子水按一定比例混合作为溶剂，加入醋酸钴、聚乙烯吡咯烷酮（PVP）和4,4,4 s三嗪2,4,6三苯甲酸钠（Na3TATB），通过搅拌，离心，烘干，研磨等操作制备成CoMOFs配合物。同时，通过加入碳纳米纤维（CNFs），以相同实验方案制备复合材料，与不加入碳纳米纤维的CoMOFs材料进行对比。通过对电极材料进行电化学性能测试、比容量计算、材料表征等技术手段探究材料的结构与电化学化学性能。扫描电子显微镜（SEM）表征证实CoMOFs配合物粉末由许多短棒组成，平均直径和长度分别约为60 nm和170 nm。实验表明活性材料内部丰富的腔体结构有利于电解质离子的渗透。 *51今日免费论文网|www.51jrft.com +Q: @351916072@ 
实验测得CoMOFs电极材料和其复合材料在0.5 A g1的恒定值下的放电容量分别为425和464 F g1，高于经典的多孔MOFs电极的放电容量。二者的库仑效率计算值分别为76％和73％，经过3000次不间断循环后，测得CoMOFs电极材料和其复合材料的容量保持率分别为88％和83％，以上结果表明不加入CNFs的电极材料具有更出色的电化学性能。
SYNTHESIS OF COMOFS AND THEIR DERIVATIVES AND SUPERCAPACITOR PROPERTIES
ABSTRACT
In this experiment, the onestep synthesis method is used to prepare the target material. Ethanol and deionized water mixed as a solvent in a certain ratio, through adding cobalt acetate, polyvinylpyrrolidone(PVP) and the sodium salt of 4,4,4striazine2,4,6triphenylbenzene acid (Na3TATB), the CoMOFs complex has been prepared by stirring, centrifuging, drying, grinding and so forth. Meantime, the composting material is also prepared by adding carbon nanofibers (CNFs) in the same experimental scheme to compare to the CoMOFs without carbon nanofibers. The compositions and electrochemical performances of these materials are explored through technical methods such as electrochemical performance testing, specific capacity calculation, and material characterization of electrode materials. Scanning electron microscope (SEM) characterization confirms that the CoMOFs powder consists of many short rods with an average diameter and length of approximately 60 nm and 170 nm, respectively. Due to their high surface energy, several small rods are further gathered together to form a cluster pattern, and a rich cavity structure is formed therein, which is conducive to the penetration of electrolyte ions. The experimentally measured discharge capacities of CoMOFs electrode material and its composite material at a constant value of 0.5 A g1 are 425 and 464 F g1, respectively, which are higher than that of classic porous MOFs electrodes. The calculated values of the Coulomb efficiency of the two are 76% and 73% respectively. After 3000 uninterrupted cycles, the durability of the electrode is studied. The capacity retention rate of the CoMOFs electrode material and its composite material is 88% and 83% separately. The results show that the electrode material without CNFs has better electrochemical performances.

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