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ѧУÆÀ½±Ñ§½ðÓã¬Ö»ÐèÒªWOSºÅ»òÕßIDSºÅ£¬ÍûÐֵܽãÃÃÃǰïæ£¡ ×÷Õß: Peng Sun, Zhongfang Li, Lei Jin, Suwen Wang, Xiaoyan Yin, ÎÄÌâ: Pre-oxidized acrylic fiber reinforced ferric sulfophenyl phosphate-doped polybenzimidazole-based high-temperature proton exchange membrane ÆÚ¿¯Ãû: International Journal of Hydrogen Energy ÆÚ¿¯Äê·Ý: 2017 ¾í(ÆÚ),ÆðÖ¹Ò³Âë: µÚ42¾íµÚ21ÆÚ£¬14572-14582Ò³. Doi: 10.1016/j.ijhydene.2017.04.092 Êý¾Ý¿âÃû³Æ: ScienceDirect(Elsevier) |
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polymer1211
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sp2286770: ½ð±Ò+50, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2017-09-25 13:10:38
Ðľ²_ÒÀÈ»: LS-EPI+1, ¸ÐлӦÖú 2017-09-26 17:18:34
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sp2286770: ½ð±Ò+50, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2017-09-25 13:10:38
Ðľ²_ÒÀÈ»: LS-EPI+1, ¸ÐлӦÖú 2017-09-26 17:18:34
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µÚ 1 Ìõ£¬¹² 1 Ìõ ±êÌâ: Construction of proton channels and reinforcement of physicochemical properties of oPBI/FeSPP/GF high temperature PEM via building hydrogen bonding network ×÷Õß: Sun, P (Sun, Peng); Li, ZF (Li, Zhongfang); Jin, L (Jin, Lei); Wang, SW (Wang, Suwen); Yin, XY (Yin, Xiaoyan) À´Ô´³ö°æÎï: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY ¾í: 42 ÆÚ: 21 Ò³: 14572-14582 DOI: 10.1016/j.ijhydene.2017.04.092 ³ö°æÄê: MAY 25 2017 ÕªÒª: Composite high temperature proton exchange membranes (HT-PEMs) comprising poly[4,4'(diphenyl ether)-5,5'-bibenzimidazole] (oPBI), ferric sulfophenyl phosphate (FeSPP) and glass fiber (GF) were prepared by the hot-pressing method. Doping FeSPP as a novel insoluble proton conductor not only provided good proton conductivity at high temperature but also enhanced their methanol blocking property, dimensional stability and oxidative resistance. Good dispersion, construction of proton channels and reinforcement of the physicochemical properties were achieved by building hydrogen bonding network among oPBI, FeSPP and GF. After incorporation of 3wt% GF into the oPBI/FeSPP(30wt%) composite membrane, the tensile strength was enhanced by 370% while the swelling ratio reduced to around 55%. The oxidative stability and methanol resistance were also enhanced while the proton conductivity was slightly affected. The membranes were thermally stable in the working temperature range for HT-PEM fuel cells. The proton conductivity of oPBI/FeSPP(30wt%) and oPBI/FeSPP(30wt%)/GF(3wt%) membranes reached 0.089 and 0.074 S cm(-1) at 180 degrees C and 100% relative humidity, respectively. At 180 degrees C, the proton conductivity of oPBI/FeSPP(30wt%) and oPBI/FeSPP(30wt%)/GF(3wt%) was 0.052 and 0.042 S cm(-1) at 50% RH, respectively. oPBI/FeSPP(30wt%)/GF(3wt%) exhibited good selectivity of 3.84 x 10(5) S s cm(-3) indicating good potential for applications in direct methanol fuel cells. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. Èë²ØºÅ: WOS:000403514600021 ISSN: 0360-3199 eISSN: 1879-3487 |
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