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利用模板碳化法控制合成多孔炭材料及其電化學性能基礎研究

發(fā)布時間:2018-08-22 13:43
【摘要】:本論文針對納米多孔炭材料具有比表面積高,總孔容大、孔結構可調、導熱性高、機械穩(wěn)定性強和易于批量生產等特點和優(yōu)勢,開展炭材料的可控合成及其在超級電容器中的應用研究。重點采用不同的碳源和模板劑,通過模板炭化法制備了系列的納米多孔炭材料,采用XRD、FESEM、HRTEM、Raman、XPS、BET等技術手段對炭材料的結構進行表征,并采用三電極體系(或二電極體系)對超電容性能(如CV曲線、充放電曲線、Ragone圖、Nyquist圖、循環(huán)穩(wěn)定性等)進行測定。論文的主要研究內容如下:1.利用鄰苯二甲酸氫鉀為炭源,商品的Mg、Zn、Al粉體為硬模板,來合成納米多孔炭材料。2.通過直接在800℃炭化檸檬黃和Ca(OAc)2·H2O混合物,合成了具有高BET比表面積和大孔容的氮摻雜多孔炭材料。采用水楊酸鋅配合物為前驅體、Mg(OAc)2-4H2O為模板劑,合成了高性能的納米多孔炭材料。使用1,10-菲羅啉(或苯并咪唑)為炭/氮源,檸檬酸鎂為模板,合成含氮摻雜的納米多孔炭材料。3.直接碳化對苯二甲酸鋅和鄰苯二甲酸氫鉀,合成了用超級電容器的高性能的納米多孔炭材料。4.以離子交換樹脂為炭源,通過模板碳化-KOH活化法合成多孔炭材料,并在EDLC領域具有良好的應用。以ZnCl2為普適的活化劑,利用鎂試劑、茜素黃和檸檬黃為炭源/氮源,通過模板炭化-活化法合成氮摻雜多孔炭材料。
[Abstract]:In this paper, nano-porous carbon materials have the advantages of high specific surface area, large total pore volume, adjustable pore structure, high thermal conductivity, strong mechanical stability and easy mass production. The controllable synthesis of carbon materials and its application in supercapacitors were studied. A series of nano-porous carbon materials were prepared by template carbonization with different carbon sources and templating agents. The structure of the carbon materials was characterized by means of XRDD-FESEMN HRTEMN Raman-XPS-BET and so on. The performance of supercapacitor (such as CV curve, charge / discharge curve, Nyquist diagram, cycle stability, etc.) was measured by three-electrode system (or two-electrode system). The main contents of this thesis are as follows: 1. Nano-porous carbon material .2was synthesized by using potassium phthalate as carbon source and commercial MgOZnZn-Al powder as hard template. Nitrogen-doped porous carbon materials with high BET specific surface area and large pore volume were synthesized by direct carbonization of lemon yellow and Ca (OAc) _ 2H _ 2O at 800 鈩,

本文編號:2197275

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