目录
摘要II
关键词II
AbstractIII
引言
引言1
1 材料与方法3
1.1 试剂与实验设备3
1.1.1 实验试剂3
1.1.2 实验所选仪器4
1.2 表征方法 4
1.2.1 电化学测试4
1.2.2 X射线粉末衍射技术5
1.2.3 透射电子显微镜5
1.2.4 热重分析5
1.3 实验步骤5
1.3.1 溶液的配置5
1.3.2 泡沫镍前处理5
1.3.3 前驱体NiATC的合成6
1.3.4 煅烧前驱体NiATC6
1.3.5 活性电极的制备6
2 结果与分析6
2.1 前驱体NiATC的表征6
2.2煅烧产物的表征7
3 结论 10
致谢10
参考文献11
MOFs衍生的氮掺杂碳的合成及电化学性能研究
摘 要
在关于超级电容器的研究中，电极材料的选择对电化学性能的好坏有着十分重要的影响。镍离子在与有机配体配位时有着多样的配位数，得到的NiMOFs及其衍生物在作为超级电容器电极时有着较好的表现，因此得到广泛的研究。在本实验中，采用一种简单的方法，将有机羧酸配体3氨基1,2,4三唑5羧酸（HATC）的钠盐NaATC与金属镍离子Ni2+发生配位反应，一步合成得到了相应的片状晶态NiMOFs，并经过在氮气中的煅烧，得到了两种基于该NiMOFs衍生的煅烧产物，经过表征，二者有着较为相似的形貌，皆为核壳型材料，颗粒结构为氮掺杂的碳包裹镍纳米颗粒，其中，由更高煅烧温度得到的Ni@NC2中镍颗粒聚集的更加紧密。在电化学测试中，通过CV探索了电极的氧化还原反应机理，在CP测试中，两种煅烧产物表现出较好的性能，较低煅烧温度得到的Ni@NC1有着更大的比电容量，在0.5 A g1的电流密度下达到了465 F g1，因此，煅烧温度将影响煅烧产物结构，更高煅烧温度得到的产物可能是因碳层结构遭到破坏，不利于电极材料与电解液发生化学反应。
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YNTHESIS AND INVESTIGATION THE ELECTROCHEMICAL PROPERTIES OF NITROGENDOPED CARBON DERIVED FROM MOFS
ABSTRACT
In the research of supercapacitors, the selection of electrode materials has a very important influence on the electrochemical performance. Nickel ions have various coordination numbers when they coordinate with organic ligands. There are widely studied because not NiMOFs but also their derivatives have good performance as supercapacitors electrodes. In this experiment, the sodium salt NaATC which are obtained from 3amino1,2,4triazole5carboxylic acid (HATC) react with Ni2+ ions, using a simple method to yield the NiMOFs with lamellar crystal structure in one step. On the basis of the precursor, two products derived from the NiMOFs are obtained after calcination in nitrogen. Both have similar morphology with coreshell structures which are comprised by nickel nanoparticles wrapped by Ndoped carbon through characterization. However, nickel particles in Ni@NC2 generated by higher calcination temperature are more closely aggregated. As for the electrochemical test, the redox reaction mechanisms of the electrodes are explored by CV methods. And the two calcined products show distinguished property in CP, of which Ni@NC1 obtained through lower temperature have a larger specific capacitance (465 F g1 at 0.5 A g1). Therefore, the calcination temperature will affect the structure of the calcined products, and the carbon shells obtained by higher calcination temperature will corrupted, which is not benefit to the chemical reaction between the electrode materials and the electrolyte.
KEY WORDS：Supercapacitors; NiMOFs; Electrode materials; Energy storage; Composite materials

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