摘要超级电容器具有高功率密度、长循环寿命成为能源领域的研究热点，而获得超级电容器的关键在于电极材料的设计。本论文以海藻作为碳源、通过水热法一步分别制备了铁、钴、镍掺杂碳复合电极材料。系统的研究了投料比，煅烧温度等对材料的形貌、晶型以及电化学性能的影响。研究结果表明，Co和Ni掺杂碳材料具有着较大的比电容： Co掺杂碳材料最大比电容为458.96Fg-1，Ni掺杂碳材料的最大比电容为314.63Fg-1，因此以海藻作为碳源制备碳基复合材料具有良好的应用前景。41888

关键词  超级电容器、碳材料、复合材料

毕业论文设计说明书外文摘要

Title    The synthesis and the electrochemical properties of doped   carbon based Composite for the supercapacitor                                                  

Abstract

Supercapacitor, with high power density and long cycle liFe, has been widely researched in the field of energy. Furthermore the design of the electrode materials is the key to improve the electrochemical properties of the supercapacitor. In this article, the Fe based carbon material, the Co based carbon material and the Ni based carbon material was synthesized by hydrothermal method, where the seaweed was used as the carbon source. The Feed ratio and the calcination temperature was researched the efFect of morphology, crystal form and the electrochemical properties. The Co and Ni doped carbon Composite can be used as the electrode material with the specific capacitance about 458.96Fg-1 for Co doped carbon electrode material and 314.63Fg-1 for Ni doped carbon electrode material. The results reveal that the carbon based Composite has the well application potential in the supercapacitor electrode.

Keywords  Supercapacitor  carbon material  Composite

目   次

1 引言 1

1.1  电容器与超级电容器 1

1.2  超级电容器电极材料 1

1.3  碳材料的优势及其改性 2

1.4  本论文的工作 4

2 实验 5

2.1  实验试剂及仪器 5

2.2  合成方法 5

2.3  材料表征 6

2.4  电化学测试 7

3  铁基/碳复合材料 8

3.1  材料表征 8

3.1.1  TEM测试 8

3.1.2  红外测试 9

3.1.3  XRD测试 9

3.2  电化学性能测试 10

3.2.1  循环伏安测试(CV)及恒流充放电测试(CP) 10

3.2.2  对比与讨论 12

4  钴基/碳复合材料 15

4.1  材料表征 15

4.1.1  TEM测试 15

4.1.2  红外测试 16

4.1.3  XRD测试 17

4.2  电化学性能测试 17