聚苯胺—鈦酸鋇系固態(tài)超級(jí)電容器的研究
發(fā)布時(shí)間：2018-09-12 07:51
【摘要】：超級(jí)電容器是一種介于傳統(tǒng)電容器和電池之間的新型儲(chǔ)能器件，它具有比電容大、循環(huán)壽命長(zhǎng)、對(duì)環(huán)境友好等優(yōu)點(diǎn)，主要應(yīng)用于電動(dòng)汽車和智能電網(wǎng)等方面。 目前關(guān)于超級(jí)電容器的研究主要為液態(tài)電解質(zhì)超級(jí)電容器，核心在電極。固態(tài)電解質(zhì)超級(jí)電容器由于快速離子遷移技術(shù)不成熟，制約了這方面研究的開展。本文以固態(tài)電解質(zhì)為重點(diǎn)，從電極、固態(tài)電解質(zhì)、隔膜等幾方面進(jìn)行了探索性的研究。 本文采用化學(xué)法合成聚苯胺電極，得到了優(yōu)化反應(yīng)條件下的聚苯胺電極材料。合成了BaTiO3、Na-β”-Al2O3和Na-β”-Al2O3@BaTiO3這三種粉體，作為固態(tài)電解質(zhì)，通過測(cè)試分析得到了較為適宜的固態(tài)電解質(zhì)材料。分別以BaTiO3和Na-β”-Al2O3@BaTiO3為固態(tài)電解質(zhì)，以溶膠-凝膠法、高能球磨法經(jīng)過20h、高能球磨法經(jīng)過120h合成的Na-β”-Al2O3為隔膜，采用壓片工藝，制作了超級(jí)電容器，并對(duì)其性能進(jìn)行測(cè)試。 本文的主要研究結(jié)論總結(jié)如下： (1)本文采用化學(xué)法成功合成了聚苯胺，合成的粉體電導(dǎo)率和產(chǎn)率較高，，電導(dǎo)率為2.4x10-3s/cm，產(chǎn)率為93.57%�；瘜W(xué)法操作簡(jiǎn)單安全，成本低。 (2)本文成功合成了BaTiO3、Na-β”-Al2O3和Na-β”-Al2O3@BaTiO3這三種粉體作為固態(tài)電解質(zhì)材料，其中，以Na-β”-Al2O3@BaTiO3作為固態(tài)電解質(zhì)的超級(jí)電容器電容較大，電容為29.06mF，功率密度為1.26W/kg，最大能量密度為9.07Wh/kg。電容性能接近理想電容器，具有良好的充放電性能，漂移電流較小且穩(wěn)定，總體具有較好的性能。 (3)本文制作了幾種不同的超級(jí)電容器，并對(duì)其性能分別進(jìn)行了測(cè)試。其中，以Na-β”-Al2O3@BaTiO3作為固態(tài)電解質(zhì)、溶膠-凝膠法合成的Na-β”-Al2O3為隔膜的超級(jí)電容器性能較好，電容為52.83mF，功率密度為0.625W/kg，最大能量密度為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.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM53
本文編號(hào)：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.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM53
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