本文選題：順子交換膜燃料電池　切入點：摻氮碳納米管　出處：《北京化工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：質(zhì)子交換膜燃料電池作為一種清潔高效能源受到越來越多的關(guān)注,而陰極催化劑因其對燃料電池成本和性能的重要影響而成為研究熱點。迄今為止,人們研究較為成熟的催化劑為鉑或鉑合金催化劑因價格昂貴而限制了質(zhì)子交換膜燃料電池的商業(yè)化發(fā)展。本文以苯胺,三聚氰胺,吡咯為氮源制備了摻氮碳納米管催化劑,并對制備的溫度和摻氮比例進(jìn)行優(yōu)選,目的是制備出適合工業(yè)化生產(chǎn)的高效、低成本催化劑。具體內(nèi)容如下：1.通過傳統(tǒng)Hummer法制得了中度氧化碳管(moCNTs),并通過LSV, EIS, SEM, FT-IR等測試測試表明所制備的moCNTs表面含有較多的含氧基團(tuán),內(nèi)壁結(jié)構(gòu)保持完整。2.以苯胺作為氮源,通過原位復(fù)合和高溫?zé)峤獾姆椒ㄖ苽涑鰉oCNTs/PANI-Fe體系的催化劑,并優(yōu)化了制備條件。詳細(xì)考察了溫度與摻氮比例對催化劑性能和形貌的影響。電化學(xué)測試表明：在650℃下?lián)奖桨繁壤秊閙moCNTs/PANI-1:0.4時制備的催化劑具有最好催化活性,其氧還原起始還原電位是0.73 V。3.以苯胺和三聚氰胺作為氮源,利用原位復(fù)合法高溫?zé)峤獾姆椒ㄖ苽涑鰉oCNTs/PANI/Mela(FeCl3)體系的催化劑。詳細(xì)考察了溫度與摻氮比例對催化劑性能和形貌的影響。電化學(xué)測試表明：在650℃下投料比例為mmocNTs/PANI/Mela= 1:13:6.5,鐵加入量為5%時制備的催化劑具有最好的ORR活性,在酸性電解液中其氧起始還原電位是0.87V,優(yōu)于同類非鉑催化劑。通過結(jié)構(gòu)表征發(fā)現(xiàn)該催化劑為類石墨烯片狀結(jié)構(gòu),且石墨氮含量較高,證明這一特征有利于提高ORR催化活性。4.以苯胺和吡咯作為氮源,利用原位復(fù)合法高溫?zé)峤獾姆椒ㄖ苽涑鰉oCNTs/PANI/Pyrr-Fe體系的催化劑。詳細(xì)考察了溫度與摻氮比例對催化劑性能和形貌的影響。電化學(xué)測試表明：在650℃下投料比例為mmocNTs/PANI/Pyrr=1:0.8:0.4時制備的催化劑具有最好的ORR活性,其氧起始還原電位是0.70 V。
[Abstract]:As a kind of clean and efficient energy, proton exchange membrane fuel cell (PEMFC) has attracted more and more attention, and cathodic catalyst has become a research hotspot because of its important influence on the cost and performance of fuel cell. The more mature catalysts are platinum or platinum alloy catalysts, which limit the commercial development of proton exchange membrane fuel cells due to their high price. In this paper, nitrogen-doped carbon nanotube catalysts were prepared using aniline, melamine and pyrrole as nitrogen sources. The preparation temperature and the ratio of nitrogen to nitrogen were optimized for the purpose of producing high efficiency suitable for industrial production. Low cost catalyst. 1. Moderate carbon oxide tube moCNTsN was obtained by conventional Hummer method. The results of moCNTs, EIS, SEM and FT-IR tests showed that there were more oxygen-containing groups on the surface of the prepared moCNTs. Using aniline as nitrogen source, the catalyst of moCNTs/PANI-Fe system was prepared by in situ recombination and pyrolysis at high temperature. The effects of temperature and nitrogen ratio on the performance and morphology of the catalyst were investigated in detail. The electrochemical test showed that the catalyst prepared at 650 鈩，

本文編號：1647075