標題: Synthesis and characterization of new sulfonated polytriazole proton exchange membrane by click reaction for direct methanol fuel cells (DMFCs)
作者: Huang, Yao Jheng
Ye, Yun Sheng
Yen, Ying Chieh
Tsai, Li Duan
Hwang, Bing Joe
Chang, Feng Chih
應用化學系
Department of Applied Chemistry
關鍵字: Sulfonated polytriazole;Click chemistry;Proton exchange membrane;Acid-base interaction
公開日期: 1-十一月-2011
摘要: Sulfonated polytriazole (SPTA) in which the acidic sulfonic acid and basic triazole groups act as physical crosslinking sites within a polymer backbone has been successfully prepared, for use as a proton exchange membrane, using the click reaction. The acid-base interactions of the SPTA membranes leads to the formation of well-dispersed ionic clusters and the random distribution of ion channels with good connectivity resulting in lower methanol permeabilities at ambient temperatures and similar or higher proton conductivities than Nafion 117 at 80 degrees C in conditions of near zero relative humidity. Proton conductivities (sigma) of 0.149 S cm(-1) at 80 degrees C and 9 x 10(-5) S cm(-1) in anhydrous conditions together with low methanol permeability (P) at 0.1 x 10(-6) cm(2) s(-1) that are comparable or superior to Nafion 117 (sigma(T=80) : 0.151 S cm(-1); sigma(RH=0) : 3 x 10(-5) S cm(-1); P(T=30): 1.31 x 10(-6) cm(2) s(-1)) were achieved. Additionally, the selectivity of SPTA is approximately four times higher than that of Nafion 117, thus it may have potential for use in direct methanol fuel cells (DMFCs). Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ijhydene.2011.08.093
http://hdl.handle.net/11536/14675
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2011.08.093
期刊: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume: 36
Issue: 23
起始頁: 15333
結束頁: 15343
顯示於類別:期刊論文


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