DICP OpenIR
Degradation mechanism of polystyrene sulfonic acid membrane and application of its composite membranes in fuel cells
Yu, JR; Yi, BL; Xing, DM; Liu, FQ; Shao, ZG; Fu, YZ; Yu JR(于景荣); Yu JR(于景荣)
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
2003
DOI10.1039/b209020a
Volume5Issue:3Pages:611-615
Indexed BySCI
SubtypeArticle
Department3
Funding Project301
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordPROTON-EXCHANGE MEMBRANES ; POLYMER ELECTROLYTE ; CATALYST LAYER ; IONOMER MEMBRANES ; TECHNOLOGIES ; PERFORMANCE ; OXYGEN ; CARBON
AbstractThe lifetime behavior of a H-2/O-2 proton exchange membrane (PEM) fuel cell with polystyrene sulfonic acid (PSSA) membrane have been investigated in order to give an insight into the degradation mechanism of the PSSA membrane. The distribution of sulfur concentration in the cross section of the PSSA membrane was measured by energy dispersive analysis of X-ray, and the chemical composition of the PSSA membrane was characterized by infrared spectroscopy before and after the lifetime experiment. The degradation mechanism of the PSSA membrane is postulated as: the oxygen reduction at the cathode proceeds through some peroxide intermediates during the fuel cell operation, and these intermediates have strong oxidative ability and may chemically attack the tertiary hydrogen at the a carbon of the PSSA; the degradation of the PSSA membrane mainly takes place at the cathode side of the cell, and the loss of the aromatic rings and the SO3- groups simultaneously occurs from the PSSA membrane. A new kind of the PSSA-Nafion composite membrane, where the Nafion membrane is bonded with the PSSA membrane and located at the cathode of the cell, was designed to prevent oxidation degradation of the PSSA membrane in fuel cells. The performances of fuel cells with PSSA-Nafion101 and PSSA-recast Nafion composite membranes are demonstrated to be stable after 835 h and 240 h, respectively.
Language英语
URL查看原文
WOS IDWOS:000180427300026
Citation statistics
Cited Times:115[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/82459
Collection中国科学院大连化学物理研究所
Corresponding AuthorYu JR(于景荣); Yu JR(于景荣)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell R&D Ctr, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Yu, JR,Yi, BL,Xing, DM,et al. Degradation mechanism of polystyrene sulfonic acid membrane and application of its composite membranes in fuel cells[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2003,5(3):611-615.
APA Yu, JR.,Yi, BL.,Xing, DM.,Liu, FQ.,Shao, ZG.,...&于景荣.(2003).Degradation mechanism of polystyrene sulfonic acid membrane and application of its composite membranes in fuel cells.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,5(3),611-615.
MLA Yu, JR,et al."Degradation mechanism of polystyrene sulfonic acid membrane and application of its composite membranes in fuel cells".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 5.3(2003):611-615.
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