本文選題：燃料電池　切入點：陰離子交換膜　出處：《蘇州大學(xué)》2015年碩士論文

【摘要】：燃料電池(Fuel Cells)是一種環(huán)境友好的清潔能源,具有運行質(zhì)量高,噪音排放低等特點,具有廣闊的應(yīng)用前景。質(zhì)子交換膜因其在使用過程中需要用到貴重金屬催化劑及聚電解質(zhì)膜,使得其大范圍應(yīng)用受到了限制。陰離子交換膜是堿性燃料電池的關(guān)鍵材料之一,基于季銨鹽的堿性陰離子交換膜被廣泛的研究后發(fā)現(xiàn),其耐堿穩(wěn)定性較差,阻礙了燃料電池的應(yīng)用。本文從分子角度設(shè)計并合成幾種咪唑鹽和吡咯烷鹽陽離子及相應(yīng)的陰離子交換膜,通過接枝不同的取代基,達(dá)到定向可控的分子結(jié)構(gòu)。依據(jù)小分子測試結(jié)論制備得到的相應(yīng)的陰離子交換膜具有良好的耐堿性穩(wěn)定性。主要工作內(nèi)容包括:(1)首先合成并表征了一系列N3位上分別含有不同取代基的咪唑鹽,然后在不同溶劑中進行了長時間的耐堿性試驗。結(jié)果表明1,2-二甲基-3-異丙基咪唑陽離子具有最高耐堿穩(wěn)定性,并且比季銨鹽陽離子表現(xiàn)出更加優(yōu)異的耐堿性。采用光聚合方法制備的相應(yīng)的陰離子交換膜同樣進行了耐堿性測試,最終得出異丙基取代的咪唑鹽陰離子交換膜具有優(yōu)異的耐堿性結(jié)論。(2)首先合成了一系列N1位上分別含有不同取代基的吡咯烷陽離子,通過核磁圖譜對吡咯烷陽離子進行了結(jié)構(gòu)表征,然后在混合溶劑中進行耐堿試驗。結(jié)果表明N-甲基-N-乙基吡咯烷鹽陽離子具有最高的耐堿穩(wěn)定性。最后將耐堿穩(wěn)定性好的吡咯烷陽離子合成出相應(yīng)陰離子交換膜,經(jīng)過168小時耐堿測試后的電導(dǎo)率及機械性能減少幅度較小,表現(xiàn)出較高耐堿穩(wěn)定性。
[Abstract]:Fuel cell (fuel cell) is a kind of environment-friendly clean energy with high operation quality and low noise emission, so it has a broad application prospect.The application of proton exchange membrane is limited because of the use of precious metal catalyst and polyelectrolyte membrane.The anion exchange membrane is one of the key materials of alkaline fuel cell. After extensive research on the basic anion exchange membrane based on quaternary ammonium salt, it is found that the alkali-resistant stability of the membrane is poor, which hinders the application of the fuel cell.In this paper, several kinds of imidazole salts and pyrrolidine cations and their corresponding anion exchange membranes are designed and synthesized from a molecular perspective. By grafting different substituents, the molecular structure of imidazole salt and pyrrolidine salt can be controlled.The anion exchange membrane prepared by the small molecule test has good alkali resistance stability.First, a series of imidazole salts with different substituents on N 3 were synthesized and characterized, and then a long time alkaline resistance test was carried out in different solvents.The results showed that the alkali-resistant and alkali-resistant cations of 1 ~ 2-dimethyl-3-isopropyl imidazole were higher than those of quaternary ammonium salts.The alkali resistance of the anion exchange membrane prepared by photopolymerization was also tested.It is concluded that Isopropyl substituted imidazolium anion exchange membrane has excellent alkalinity resistance. Conclusion. 2) first, a series of pyrrolidine cations with different substituents on N1 site were synthesized.The structure of pyrrolidine cations was characterized by NMR spectra and alkali resistance test was carried out in mixed solvents.The results show that N-methyl-N-ethyl pyrrolidine cations have the highest alkali-resistance stability.Finally, the anion exchange membrane was synthesized from pyrrolidine cations with good alkali-resistant stability. After 168 hours of alkali resistance test, the conductivity and mechanical properties of the membrane were reduced by a small extent, showing a higher alkali-resistant stability.
【學(xué)位授予單位】：蘇州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ425.236;TM911.4

【參考文獻】

相關(guān)期刊論文 前1條

1 徐敏;阮新波;;質(zhì)子交換膜燃料電池經(jīng)驗?zāi)Ｐ蚚J];太陽能學(xué)報;2010年07期

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本文編號：1721760