本文選題：電極材料 + 超級電容器��； 參考：《北京交通大學(xué)》2014年碩士論文

【摘要】：摘要：石墨烯材料作為新型結(jié)構(gòu)碳材料,具有優(yōu)異的電學(xué)、力學(xué)、光學(xué)等特性,與導(dǎo)電聚合物復(fù)合,是高性能超級電容器電極材料的熱點問題。本文以高性能的超級電容器電極材料為目標(biāo),制備了石墨烯材料、聚苯胺材料、氧化石墨烯／聚苯胺和石墨烯／聚苯胺復(fù)合材料以及將其作為電極材料組裝成了超級電容器,并對比分析了這些電極材料的性能差別,主要研究內(nèi)容如下： (1)采用Hummers法制備了單層氧化石墨烯和通過混合氣體還原方法制備了石墨烯,通過SXR、XRD、FTIR表征手段對其進行了分析。 (2)采用扣式結(jié)構(gòu)組裝了石墨烯、活性炭超級電容器,選取了KOH作為電解液,測試了其循環(huán)伏安曲線、恒流充放電曲線和交流阻抗曲線。計算出了比電容量、能量密度等電學(xué)性質(zhì),并對其性能進行了比較分析。 (3)采用化學(xué)氧化法制備了純聚苯胺,原位聚合法制備了氧化石墨烯／聚苯胺復(fù)合材料,通過SXR、XRD、FTIR表征手段對其進行了分析,證實了氧化石墨烯與聚苯胺成功復(fù)合。 (4)研究了聚苯胺和氧化石墨烯／聚苯胺在H2SO4電解液中的電化學(xué)測試,包括循環(huán)伏安測試、恒流充放電測試和交流阻抗測試。研究了此電極材料對電容器性能的影響,計算出了比電容量、能量密度等電學(xué)性質(zhì),并對其性能進行了比較分析。(5)采用原位聚合法制備了石墨烯／聚苯胺復(fù)合材料,通過改變了苯胺量、石墨烯量在復(fù)合材料中的百分含量,利用SXR、XRD、FTIR表征結(jié)果,進行了比較,來控制復(fù)合材料的形貌。 (6)采用扣式結(jié)構(gòu)組裝了不同配比的石墨烯／聚苯胺超級電容器,測試了其在KOH電解液中的循環(huán)伏安曲線、恒流充放電曲線和交流阻抗曲線。計算出了比電容量、能量密度等電學(xué)性質(zhì),并與石墨烯電極材料的電化學(xué)性能進行了綜合比較分析。
[Abstract]:Abstract: as a new type of structural carbon material, graphene material has excellent electrical, mechanical and optical properties, and is combined with conductive polymer, which is a hot issue in electrode materials of high performance supercapacitors. In this paper, graphene materials, Polyaniline materials, graphene oxide / Polyaniline and graphene / Polyaniline composites were prepared and assembled as electrode materials to form supercapacitors. The properties of these electrode materials are compared and analyzed. The main research contents are as follows: (1) graphene oxide monolayer was prepared by Hummers method and graphene was prepared by gas mixture reduction method. (2) graphene and activated carbon supercapacitors were assembled with button structure, and KOH was selected as electrolyte. The cyclic voltammetry curves, constant current charge-discharge curves and AC impedance curves were measured. The electrical properties such as specific capacitance and energy density are calculated, and their performances are compared and analyzed. Pure Polyaniline was prepared by chemical oxidation, and graphene oxide / Polyaniline composite was prepared by in-situ polymerization. The results were analyzed by means of SXRX XRDX FTIR, and it was confirmed that graphene oxide was successfully combined with Polyaniline. The electrochemical measurements of Polyaniline and graphene oxide / Polyaniline in H2SO4 electrolyte were studied, including cyclic voltammetry, constant current charge-discharge test and AC impedance test. The effect of the electrode material on the performance of the capacitor was studied. The electrical properties such as specific capacitance and energy density were calculated, and its properties were compared and analyzed. The graphene / Polyaniline composites were prepared by in-situ polymerization. The morphology of the composites was controlled by changing the content of aniline and the percentage of graphene in the composites. The results were characterized by SXRX XRDX FTIR. (6) the graphene / Polyaniline supercapacitors with different ratios were assembled with button structure. The cyclic voltammetry curves, constant current charge-discharge curves and AC impedance curves of the supercapacitors in KOH electrolyte were measured. The electrical properties such as specific capacitance and energy density were calculated and compared with the electrochemical properties of graphene electrode materials.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM53

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本文編號：1867115