Oxidative Degradation of Polybenzimidazole Membranes as Electrolytes for High Temperature Proton Exchange Membrane Fuel Cells

	Oxidative Degradation of Polybenzimidazole Membranes as Electrolytes for High Temperature Proton Exchange Membrane Fuel Cells
	Liao JH ; Li QF ; Rudbeck HC ; Jensen JO ; Chromik A ; Bjerrum NJ ; Kerres J ; Xing W
刊名	fuel cells
	2011
卷号	11 期号:6 页码:745-755
关键词	ACID DOPED POLYBENZIMIDAZOLE POLYMER ELECTROLYTE CONDUCTING MEMBRANES CHP APPLICATIONS H3PO4-DOPED PBI PEMFC MODE PERFORMANCE ENVIRONMENT POLYETHERS
ISSN号	1615-6846
通讯作者	li qf
中文摘要	polybenzimidazole membranes imbibed with acid are emerging as a suitable electrolyte material for high-temperature polymer electrolyte fuel cells. the oxidative stability of polybenzimidazole has been identified as an important issue for the long-term durability of such cells. in this paper the oxidative degradation of the polymer membrane was studied under the fenton test conditions by the weight loss, intrinsic viscosity, size exclusion chromatography, scanning electron microscopy and fourier transform infrared spectroscopy. during the fenton test, significant weight losses depending on the initial molecular weight of the polymer were observed. at the same time, viscosity and sec measurements revealed a steady decrease in molecular weight. the degradation of acid doped pbi membranes under fenton test conditions is proposed to start by the attack of hydroxyl radicals at the carbon atom linking imidazole ring and benzenoid ring, which may eventually lead to the imidazole ring opening and formation of small molecules and terminal groups for further oxidation by an endpoint oxidation.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000298317200005
公开日期	2012-06-07
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/44190]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Liao JH,Li QF,Rudbeck HC,et al. Oxidative Degradation of Polybenzimidazole Membranes as Electrolytes for High Temperature Proton Exchange Membrane Fuel Cells[J]. fuel cells,2011,11(6):745-755.
APA	Liao JH.,Li QF.,Rudbeck HC.,Jensen JO.,Chromik A.,...&Xing W.(2011).Oxidative Degradation of Polybenzimidazole Membranes as Electrolytes for High Temperature Proton Exchange Membrane Fuel Cells.fuel cells,11(6),745-755.
MLA	Liao JH,et al."Oxidative Degradation of Polybenzimidazole Membranes as Electrolytes for High Temperature Proton Exchange Membrane Fuel Cells".fuel cells 11.6(2011):745-755.