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Modulation of of the microstructure of the Ag/C-based alkaline cathode via the ionomer content for a bipolar membrane fuel cell
Xu, X; Peng, SK; Lu, SF; Gong, J; Zhang, J; Huang, WX; Xiang, Y; Huang WX(黄万霞)
2017
Source PublicationJOURNAL OF POWER SOURCES
ISSN0378-7753
EISSN1873-2755
Volume354Pages:92-99
SubtypeArticle
AbstractAg/C is evaluated as a cathode catalyst for a bipolar membrane fuel cell (BPMFC). The microstructure of the cathode catalyst layer is modulated via ionomer content, and the effects on BPMFC performance are studied. When the ionomer content is increased from 10 wt% to 30 wt%, the fuel cell performance is optimized at 19.3 mW/cm(2) with an ionomer content of 20 wt%. Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) are conducted on the catalyst layer. EIS indicates that the charge transfer resistance is minimum, while CV suggests that the highest electrocatalytic activity of the catalyst is achieved with an ionomer content of 20 wt%. The microstructure of the catalyst layer is characterized using scanning electron microscopy (SEM) and nanometer-scale X-ray computed tomography (nano-CT). The SEM results show that excess ionomer cover on the surface of the catalyst, and the catalyst seems to form larger aggregates. Nano-CT, however, produces quite different results. The reconstructed 3D image of the catalyst layer reveals that the Ag/C catalyst tends to aggregate at low ionomer content. When the ionomer content is increased from 10 wt% to 30 wt%, the average diameter of the catalyst aggregation decreases from 313 nm to 210 nm. (C) 2017 Elsevier B.V. All rights reserved.
KeywordBipolar membrane fuel cell Ag/C Cathode catalyst layer Ionomer content Nano-CT
DOI10.1016/j.jpowsour.2017.04.006
WOS KeywordOXYGEN REDUCTION REACTION ; RAY COMPUTED-TOMOGRAPHY ; OPTIMUM NAFION CONTENT ; CATALYST LAYER ; NM-RESOLUTION ; ELECTROLYTE ; PERFORMANCE ; CARBON ; MEDIA ; ANION
Indexed BySCI ; EI ; SCOPUS ; ADS
Language英语
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000401686100012
EI Accession Number20171603578260
EI KeywordsAggregates - Cathodes - Charge transfer - Computerized tomography - Cyclic voltammetry - Electrochemical impedance spectroscopy - Fuel cells - Ionomers - Microstructure - Scanning electron microscopy
EI Classification Number406 Highway Engineering - 702.2 Fuel Cells - 723.5 Computer Applications - 801 Chemistry - 801.4.1 Electrochemistry - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 815.1.1 Organic Polymers - 951 Materials Science
ADS Bibcode2017JPS...354...92X
ADS URLhttps://ui.adsabs.harvard.edu/abs/2017JPS...354...92X
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2017JPS...354...92X/citations
Citation statistics
Cited Times:2 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/284844
Collection多学科研究中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Xu, X,Peng, SK,Lu, SF,et al. Modulation of of the microstructure of the Ag/C-based alkaline cathode via the ionomer content for a bipolar membrane fuel cell[J]. JOURNAL OF POWER SOURCES,2017,354:92-99.
APA Xu, X.,Peng, SK.,Lu, SF.,Gong, J.,Zhang, J.,...&黄万霞.(2017).Modulation of of the microstructure of the Ag/C-based alkaline cathode via the ionomer content for a bipolar membrane fuel cell.JOURNAL OF POWER SOURCES,354,92-99.
MLA Xu, X,et al."Modulation of of the microstructure of the Ag/C-based alkaline cathode via the ionomer content for a bipolar membrane fuel cell".JOURNAL OF POWER SOURCES 354(2017):92-99.
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