本文選題：堿性燃料電池 + 聚醚砜�。� 參考：《中國礦業(yè)大學(xué)》2015年碩士論文

【摘要】：使用陰離子交換膜的聚合物電解質(zhì)燃料電池具有較高的能量轉(zhuǎn)化效率、可采用非貴金屬催化劑、低污染與低維護(hù)費用等優(yōu)點,有望成為能源利用中一種突出的清潔能源技術(shù)。新型的陰離子交換膜的開發(fā)工作受到了越來越多的關(guān)注。本文是對聚芳醚砜類陰離子交換膜的功能化及膜制備展開的一系列研究,論文的主要內(nèi)容如下。(1)以鄰甲基對苯二酚和4,4’-二氟二苯砜制備了含甲基側(cè)基聚醚砜嵌段,然后利用該嵌段進(jìn)行嵌段聚合、NBS溴代、季銨鹽轉(zhuǎn)化制備了側(cè)鏈季銨化的聚醚砜(NPBMHQF-x)膜材料,核磁表征了產(chǎn)物的結(jié)構(gòu)。性能研究表明,對比類似的無規(guī)共聚物的膜材料,嵌段聚合物膜材料具有較低的吸水率和溶脹率,尺寸穩(wěn)定性較好、電導(dǎo)率較高。離子交換量為1.42mmol/g時,NPBMHQF-50在80℃時的電導(dǎo)率達(dá)到了43.6 ms/cm。膜材料在室溫下4mol/LKOH溶液中浸泡7天,電導(dǎo)率沒有發(fā)生變化。(2)用4,4’-二氟二苯砜對鄰甲基對苯二酚進(jìn)行酚羥基的保護(hù),然后經(jīng)NBS溴代,季銨鹽轉(zhuǎn)化,合成了帶有季銨鹽側(cè)基的功能單體DFQNHQ。用DFQNHQ單體、4,4’-二氟二苯砜和雙酚AF縮聚制備了帶有季銨鹽側(cè)基的聚醚砜陰離子交換膜(DFQNHQP-x),通過核磁表征了各階段產(chǎn)物的結(jié)構(gòu)。通過使用功能單體聚合,季銨基團(tuán)的數(shù)量和在聚合物主鏈的位置可以得到有效地控制。性能研究表明,膜材料有一定的力學(xué)性能和十分優(yōu)異的堿穩(wěn)定性、尺寸穩(wěn)定性,離子交換量最高的DFQNHQP-100(IEC=1.15mmol/g)在80℃的電導(dǎo)率是35.8 ms/cm。雖然電導(dǎo)率并不是十分突出,但為之后的陰離子交換膜的研發(fā)提供了一種由功能單體直接聚合的思路。
[Abstract]:The polymer electrolyte fuel cell with anion exchange membrane has the advantages of high energy conversion efficiency, non-noble metal catalyst, low pollution and low maintenance cost. It is expected to be an outstanding clean energy technology in energy utilization.More and more attention has been paid to the development of new anion exchange membranes.In this paper, a series of studies on the functionalization and preparation of poly (aryl ether sulfone) anion exchange membranes were carried out.Then the block was used to polymerize NBS and the quaternary ammonium salt was converted to prepare the side chain quaternary ammonium polyethersulfone (PES) NPBMHQF-x membrane material. The structure of the product was characterized by NMR.The results show that compared with the membrane materials of similar random copolymers, the block polymer membranes have lower water absorption and swelling rate, better dimensional stability and higher conductivity.The conductivity of NPBMHQF-50 reached 43.6 Ms / cm at 80 鈩，

本文編號：1744531