聚苯胺—钛酸钡系固态超级电容器的研究
发布时间：2018-09-12 07:51
【摘要】：超级电容器是一种介于传统电容器和电池之间的新型储能器件，它具有比电容大、循环寿命长、对环境友好等优点，主要应用于电动汽车和智能电网等方面。 目前关于超级电容器的研究主要为液态电解质超级电容器，核心在电极。固态电解质超级电容器由于快速离子迁移技术不成熟，制约了这方面研究的开展。本文以固态电解质为重点，从电极、固态电解质、隔膜等几方面进行了探索性的研究。 本文采用化学法合成聚苯胺电极，得到了优化反应条件下的聚苯胺电极材料。合成了BaTiO3、Na-β”-Al2O3和Na-β”-Al2O3@BaTiO3这三种粉体，作为固态电解质，通过测试分析得到了较为适宜的固态电解质材料。分别以BaTiO3和Na-β”-Al2O3@BaTiO3为固态电解质，以溶胶-凝胶法、高能球磨法经过20h、高能球磨法经过120h合成的Na-β”-Al2O3为隔膜，采用压片工艺，制作了超级电容器，并对其性能进行测试。 本文的主要研究结论总结如下： (1)本文采用化学法成功合成了聚苯胺，合成的粉体电导率和产率较高，，电导率为2.4x10-3s/cm，产率为93.57%。化学法操作简单安全，成本低。 (2)本文成功合成了BaTiO3、Na-β”-Al2O3和Na-β”-Al2O3@BaTiO3这三种粉体作为固态电解质材料，其中，以Na-β”-Al2O3@BaTiO3作为固态电解质的超级电容器电容较大，电容为29.06mF，功率密度为1.26W/kg，最大能量密度为9.07Wh/kg。电容性能接近理想电容器，具有良好的充放电性能，漂移电流较小且稳定，总体具有较好的性能。 (3)本文制作了几种不同的超级电容器，并对其性能分别进行了测试。其中，以Na-β”-Al2O3@BaTiO3作为固态电解质、溶胶-凝胶法合成的Na-β”-Al2O3为隔膜的超级电容器性能较好，电容为52.83mF，功率密度为0.625W/kg，最大能量密度为8.25Wh/kg。
[Abstract]:Supercapacitor is a new type of energy storage device between traditional capacitor and battery. It has many advantages, such as large capacitance, long cycle life, friendly environment and so on. It is mainly used in electric vehicle and smart grid. At present, the research on supercapacitors is mainly liquid electrolyte supercapacitors, the core of which is electrode. The research of solid electrolyte supercapacitors is restricted due to the immaturity of fast ion migration technology. In this paper, the solid electrolyte was studied from the electrode, solid electrolyte, diaphragm and so on. Polyaniline electrode was synthesized by chemical method. BaTiO3,Na- 尾 "-Al _ 2O _ 3 and Na- 尾" -Al _ 2O _ 3 @ BaTiO3 powders were synthesized as solid electrolyte. Supercapacitors were fabricated using BaTiO3 and Na- 尾 "-Al _ 2O _ 3 @ BaTiO3 as solid electrolyte, Na- 尾" -Al _ 2O _ 3 prepared by high-energy ball milling method for 20 h and Na- 尾 "-Al _ 2O _ 3 prepared by high-energy ball milling method for 120 h, respectively. The main conclusions of this paper are summarized as follows: (1) Polyaniline was successfully synthesized by chemical method in this paper. The conductivity and yield of the synthesized powder were high, the conductivity was 2.4 x 10-3 s / cm and the yield was 93.57%. The chemical method is simple, safe and low in cost. (2) BaTiO3,Na- 尾 "-Al _ 2O _ 3 and Na- 尾" -Al _ 2O _ 3BaTiO3 powders were successfully synthesized as solid electrolyte materials. Among them, Na- 尾 "-Al _ 2O _ 3BaTiO _ 3 supercapacitor with Na- 尾" -Al _ 2O _ 3BaTiO _ 3 as solid electrolyte has a larger capacitance. The capacitance is 29.06mF, the power density is 1.26W / kg, and the maximum energy density is 9.07Wh/ kg. The capacitance performance is close to that of the ideal capacitor, with good charge-discharge performance, low drift current and stable overall performance. (3) several kinds of supercapacitors have been fabricated and tested in this paper. The supercapacitors with Na- 尾 "-Al _ 2O _ 3" -Al _ 2O _ 3 as solid electrolyte and Na- 尾 "-Al _ 2O _ 3 as diaphragm prepared by sol-gel method have better performance with capacitance of 52.83 mF, power density of 0.625 W / kg and maximum energy density of 8.25Whkg / kg.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM53
本文编号：2238378
[Abstract]:Supercapacitor is a new type of energy storage device between traditional capacitor and battery. It has many advantages, such as large capacitance, long cycle life, friendly environment and so on. It is mainly used in electric vehicle and smart grid. At present, the research on supercapacitors is mainly liquid electrolyte supercapacitors, the core of which is electrode. The research of solid electrolyte supercapacitors is restricted due to the immaturity of fast ion migration technology. In this paper, the solid electrolyte was studied from the electrode, solid electrolyte, diaphragm and so on. Polyaniline electrode was synthesized by chemical method. BaTiO3,Na- 尾 "-Al _ 2O _ 3 and Na- 尾" -Al _ 2O _ 3 @ BaTiO3 powders were synthesized as solid electrolyte. Supercapacitors were fabricated using BaTiO3 and Na- 尾 "-Al _ 2O _ 3 @ BaTiO3 as solid electrolyte, Na- 尾" -Al _ 2O _ 3 prepared by high-energy ball milling method for 20 h and Na- 尾 "-Al _ 2O _ 3 prepared by high-energy ball milling method for 120 h, respectively. The main conclusions of this paper are summarized as follows: (1) Polyaniline was successfully synthesized by chemical method in this paper. The conductivity and yield of the synthesized powder were high, the conductivity was 2.4 x 10-3 s / cm and the yield was 93.57%. The chemical method is simple, safe and low in cost. (2) BaTiO3,Na- 尾 "-Al _ 2O _ 3 and Na- 尾" -Al _ 2O _ 3BaTiO3 powders were successfully synthesized as solid electrolyte materials. Among them, Na- 尾 "-Al _ 2O _ 3BaTiO _ 3 supercapacitor with Na- 尾" -Al _ 2O _ 3BaTiO _ 3 as solid electrolyte has a larger capacitance. The capacitance is 29.06mF, the power density is 1.26W / kg, and the maximum energy density is 9.07Wh/ kg. The capacitance performance is close to that of the ideal capacitor, with good charge-discharge performance, low drift current and stable overall performance. (3) several kinds of supercapacitors have been fabricated and tested in this paper. The supercapacitors with Na- 尾 "-Al _ 2O _ 3" -Al _ 2O _ 3 as solid electrolyte and Na- 尾 "-Al _ 2O _ 3 as diaphragm prepared by sol-gel method have better performance with capacitance of 52.83 mF, power density of 0.625 W / kg and maximum energy density of 8.25Whkg / kg.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM53
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