Phosphoric acid‐doped imidazolium ionomers with enhanced stability for anhydrous proton‐exchange membrane applications

Journal of Polymer Science, Part B: Polymer Physics - Tập 51 Số 17 - Trang 1311-1317 - 2013
Zhihong Si1, Fenglou Gu1, Jiangna Guo1, Feng Yan1
1Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application Department of Polymer Science and Engineering College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 People's Republic of China

Tóm tắt

ABSTRACTPhosphoric acid‐doped crosslinked proton‐conducting membranes with high anhydrous proton conductivity, and good chemical stability in phosphoric acid were synthesized and characterized. The synthetic procedure of the acid‐doped composite membranes mainly involves the in situ crosslinking of polymerizable monomer oils (styrene and acrylonitrile) and vinylimidazole, and followed by the sulfonation of pendant imidazole groups with butanesultone, and further doped with phosphoric acid. The resultant phosphoric acid‐doped composite electrolyte membranes are flexible and show high thermal stability and high‐proton conductivity up to the order of 10−2 S cm−1 at 160 °C under anhydrous conditions. The phosphoric acid uptake, swelling degree, and proton conductivity of the composite membranes increase with the vinylimidazole content. The resultant composite membranes also show good oxidative stability in Fenton's reagent (at 70 °C), and quite good chemical stability in phosphoric acid (at 160 °C). The properties of the prepared electrolyte membranes indicate their promising prospects in anhydrous proton‐exchange membrane applications. © 2013 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2013, 51, 1311–1317

Từ khóa


Tài liệu tham khảo

O'Hayre R. P., 2009, Fuel Cell Fundamentals

10.1021/ja906975z

10.1126/science.1109157

10.1002/polb.21198

10.1016/j.memsci.2010.06.004

10.1021/cm901465p

10.1021/cm202064x

10.1016/S0376-7388(00)00632-3

10.1016/j.jpowsour.2012.03.011

10.1002/polb.22001

10.1038/ncomms1086

10.1002/cssc.201100032

10.1149/1.1393153

10.1021/cm070929j

10.1016/j.jpowsour.2008.08.094

10.1002/adma.200703159

10.1021/cr068040u

10.1016/j.memsci.2010.10.031

10.1021/ja102367x

10.1002/fuce.200400081

10.1016/j.ssi.2010.08.018

10.1002/fuce.201000085

10.1021/ma202694p

10.1021/ma802553w

10.1002/fuce.201200107

10.1021/cm900098r

10.1016/j.memsci.2011.12.039

10.1039/c0jm02567d

10.1039/c1jm10577a

10.1016/j.jpowsour.2012.01.038

10.1039/c2jm32787b

10.1016/j.jpowsour.2012.02.025

10.1016/S0013-4686(03)00201-9

10.1016/S0167-2738(98)00466-4

10.1039/c2ee21521g

10.1016/j.jpowsour.2006.03.028

10.1021/ma0355913

10.1021/am301185b

10.1039/c0cp00156b

10.1021/ma9015664

10.1039/c1jm12857d

10.1002/fuce.201000071

10.1021/ja0571491

10.1039/c2jm16071d

10.1002/fuce.201100024

10.1039/c1jm12169c