DICP OpenIR
MnO2/SiO2-SO3H nanocomposite as hydrogen peroxide scavenger for durability improvement in proton exchange membranes
Zhao, D.1,2; Yi, B. L.1,3; Zhang, H. M.1; Yu, H. M.3; Yi BL(衣宝廉)
KeywordDurability Manganese Dioxide Surface-sulfonated Free Radicals Hydrogen Peroxide Fast Blue Bb Salt
Source PublicationJOURNAL OF MEMBRANE SCIENCE
2010
DOI10.1016/j.memsci.2009.09.031
Volume346Issue:1Pages:143-151
Indexed BySCI
SubtypeArticle
Department3
Funding Project303
Contribution Rank1;1
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS SubjectEngineering, Chemical ; Polymer Science
WOS Research AreaEngineering ; Polymer Science
WOS KeywordPOLYMER ELECTROLYTE MEMBRANES ; PEM FUEL-CELLS ; PERFLUORINATED SULFONIC-ACID ; STANDARD ADDITION METHOD ; COMPOSITE MEMBRANES ; ELECTROCHEMICAL PROPERTIES ; DEGRADATION MECHANISM ; GAS-CROSSOVER ; CATALYTIC-ACTIVITY ; PERFORMANCE
AbstractMembrane durability was a key problem to the development of proton exchange membrane fuel cells (PEMFCs). A novel nanocomposite MnO2/SiO2-SO3H was prepared to mitigate the hydrogen peroxide attack to the membranes at fuel cell condition. The nanocomposites were synthesized by the wet chemical method and three-step functionalization. The crystal structure was characterized by X-ray powder diffraction (XRD), the crystallite size and the distribution of the nanocomposites were investigated by TEM. SEM-EDX was used to analyze the elemental distribution on the surface of the nanocomposite. And the surface functional groups (-SO3H) were evaluated by FT-IR. The amount of sulfonic acid groups introduced onto the silica surface was determined by titration method. The radical scavenging ability was estimated by UV-VIS spectroscopy using dimethyl sulfoxide (DMSO) as the trapping agent. The membrane durability was investigated via ex situ Fenton test and in situ open circuit voltage (OCV) accelerated test. In these tests, the fluoride emission rate (FER) reduced by nearly one order of magnitude with the dispersion of MnO2/SiO2-SO3H nanocomposites into Nafion membrane, suggesting that MnO2/SiO2-SO3H nanocomposites had a promising application to mitigate the degradation of the proton exchange membrane. (C) 2009 Elsevier B.V. All rights reserved.
Language英语
URL查看原文
WOS IDWOS:000271959000016
Citation statistics
Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/103549
Collection中国科学院大连化学物理研究所
Corresponding AuthorYi BL(衣宝廉)
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab PEMFC Key Mat & Technol, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Lab, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Zhao, D.,Yi, B. L.,Zhang, H. M.,et al. MnO2/SiO2-SO3H nanocomposite as hydrogen peroxide scavenger for durability improvement in proton exchange membranes[J]. JOURNAL OF MEMBRANE SCIENCE,2010,346(1):143-151.
APA Zhao, D.,Yi, B. L.,Zhang, H. M.,Yu, H. M.,&衣宝廉.(2010).MnO2/SiO2-SO3H nanocomposite as hydrogen peroxide scavenger for durability improvement in proton exchange membranes.JOURNAL OF MEMBRANE SCIENCE,346(1),143-151.
MLA Zhao, D.,et al."MnO2/SiO2-SO3H nanocomposite as hydrogen peroxide scavenger for durability improvement in proton exchange membranes".JOURNAL OF MEMBRANE SCIENCE 346.1(2010):143-151.
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