DICP OpenIR
Subject Area物理化学
Fine microstructure of high performance electrode in alkaline anion exchange membrane fuel cells
Yang, Donglei1,2,3; Yu, Hongmei1,2; Li, Guangfu1,2; Zhao, Yun1,2; Liu, Yanxi1,2; Zhang, Changkun1,2,3; Song, Wei1,2; Shao, Zhigang1,2; Yu HM(俞红梅)
KeywordAlkaline Anion Exchange Membrane Fuel Cell Dispersion Solvent Electrode Microstructure Ionomer Content Three Phase Boundary
Source PublicationJOURNAL OF POWER SOURCES
2014-12-01
DOI10.1016/j.jpowsour.2014.04.053
Volume267Pages:39-47
Indexed BySCI
Cooperation Status
SubtypeArticle
DepartmentDNL03
Funding ProjectDNL0301
Contribution Rank待补充
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Funding Organization1,1 ; 1,1 ; 1,1 ; 1,1
WOS SubjectElectrochemistry ; Energy & Fuels
WOS Research AreaElectrochemistry ; Energy & Fuels
WOS KeywordPOLYMER ELECTROLYTE ; OXYGEN ELECTROREDUCTION ; DISPERSION SOLVENT ; EMPIRICAL-EQUATION ; CATALYST LAYER ; IONOMER ; NAFION ; ASSEMBLIES ; OPTIMIZATION ; HYDROXIDE
AbstractThe electrode fabrication and resulting microstructure are the main determinates of the performance of alkaline anion exchange membrane fuel cells (AAEMFCs). In the present work, the electrode microstructure is adjusted by the ionomer content in catalyst layers as well as the dispersion solvent for catalyst inks. The ionomer content shows a strong influence on the cell active, ohmic and mass-diffusion polarization losses. Especially, an in-suit proof for the ionomer as the hydroxide conductor is first given by the cell cycle voltammogram, and the optimum content is 20 wt.%. Meanwhile, it is found that the ionomer either dissolves in the dielectric constant epsilon = 183-24.3 solutions (including ethanol, propanol and isopropanol) or disperses in the n-butyl acetate (epsilon = 5.01) colloid. Compared with these electrodes using the solution method, the colloidal electrode tends to form the larger catalyst/ionomer agglomerates, increased pore volume and pore diameter, continuous ionomer networks for hydroxide conduction, and correspondingly decreased ohmic and mass-diffusion polarization losses. Ultimately, when employing the optimum ionomer content and the colloid approach, the highest peak power density we achieved in AAEMFC is 407 mW cm(-2) at 50 degrees C, which can be taken as a considerable success in comparison to the current results in publications. (C) 2014 Elsevier B.V. All rights reserved.
Language英语
Funding Organization1,1 ; 1,1 ; 1,1 ; 1,1
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WOS IDWOS:000339601800007
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/119717
Collection中国科学院大连化学物理研究所
Corresponding AuthorYu HM(俞红梅)
Affiliation1.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Yang, Donglei,Yu, Hongmei,Li, Guangfu,et al. Fine microstructure of high performance electrode in alkaline anion exchange membrane fuel cells[J]. JOURNAL OF POWER SOURCES,2014,267:39-47.
APA Yang, Donglei.,Yu, Hongmei.,Li, Guangfu.,Zhao, Yun.,Liu, Yanxi.,...&俞红梅.(2014).Fine microstructure of high performance electrode in alkaline anion exchange membrane fuel cells.JOURNAL OF POWER SOURCES,267,39-47.
MLA Yang, Donglei,et al."Fine microstructure of high performance electrode in alkaline anion exchange membrane fuel cells".JOURNAL OF POWER SOURCES 267(2014):39-47.
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