本文選題：超級(jí)電容器 + 氮摻雜��； 參考：《遼寧科技大學(xué)》2014年碩士論文

【摘要】：能源日漸缺乏，超級(jí)電容器作為一種新能源裝置而備受關(guān)注。超級(jí)電容器具有比傳統(tǒng)的化學(xué)電池更加廣泛的用途。在超級(jí)電容器研究中，開(kāi)發(fā)高比容的電極材料具有重要的應(yīng)用價(jià)值和理論意義。提高電化學(xué)性能一般是對(duì)炭材料改善比表面積及孔結(jié)構(gòu)或者摻雜非碳原子。氮摻雜因?yàn)椴襟E簡(jiǎn)單且效果好，所以近年來(lái)備受關(guān)注。本文以苯胺為摻氮前軀體。利用原位聚合法將聚苯胺與活性炭摻氮后進(jìn)行炭化處理，得到氮摻雜活性炭。并將研究其在超級(jí)電容器中作為電極材料的電化學(xué)性能。本文主要研究?jī)?nèi)容如下： 通過(guò)原位聚合法將苯胺包覆在活性炭（Activated Carbon，AC）外，得到聚苯胺/活性炭polyaniline/activated carbon (PANI-AC)摻氮材料之后，將其700℃、900℃進(jìn)行炭化處理，制備得到氮摻雜活性炭（N-AC）。通過(guò)掃描電鏡（SEM），，X-射線光電子能譜（XPS），比表面分析儀（BET）對(duì)材料表面形貌和成分進(jìn)行表征。結(jié)果表明炭化后的材料表面確實(shí)摻雜了氮，而材料本身結(jié)構(gòu)沒(méi)有被破壞，經(jīng)比表面分析得到摻氮后的活性炭仍然有著較高的比表面積。經(jīng)循環(huán)伏安和交流阻抗討論了N-AC的電化學(xué)性能，結(jié)果表明：苯胺與活性炭質(zhì)量比為6：4時(shí)，700℃炭化后的N-AC,有較大的比容量，為182F·g1。并且內(nèi)阻僅為1，導(dǎo)電性良好。摻雜的氮元素使材料的親水性增強(qiáng)，有利于材料與電解液離子的接觸，對(duì)電化學(xué)性能改善有促進(jìn)作用。通過(guò)對(duì)其循環(huán)壽命的測(cè)試，得知材料電化學(xué)性能穩(wěn)定，循環(huán)性良好。因此本文的研究對(duì)尋找制備優(yōu)良氮摻雜碳質(zhì)材料作為超級(jí)電容器電極材料提供了理論和實(shí)驗(yàn)依據(jù)。
[Abstract]:Because of the shortage of energy, supercapacitors have attracted much attention as a new energy device. Supercapacitors have a wider range of applications than conventional chemical batteries. In the study of supercapacitors, the development of high specific capacitance electrode materials has important application value and theoretical significance. To improve electrochemical performance is to improve the specific surface area and pore structure of carbon materials or doping non-carbon atoms. Nitrogen doping has attracted much attention in recent years because of its simple steps and good effect. In this paper, aniline was used as nitrogen-doped precursor. Nitrogen-doped activated carbon was obtained by carbonization of Polyaniline and activated carbon by in-situ polymerization. The electrochemical properties of supercapacitors as electrode materials are also studied. The main contents of this paper are as follows: Polyaniline / activated carbon polyaniline/activated carbon (PANI-AC) was prepared by in-situ polymerization of aniline coated with activated carbon (Activated carbon), and then carbonized at 700 鈩

本文編號(hào)：2103665