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Degradation of electrocatalysts performance in direct methanol fuel cells
Chen Wei-Min; Sun Gong-Quan; Zhao Xin-Sheng; Sun Pi-Chang; Yang Shao-Hua; Xin Qin
KeywordDirect Methanol Fuel Cell(Dmfc) Electrocatalyst Discharge Test Performance Degradation
Source PublicationCHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
2007-05-01
Volume28Issue:5Pages:928-931
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordELECTROOXIDATION ; OXIDATION ; PLATINUM ; IMPEDANCE ; CATALYSTS ; ANODE ; BLACK ; CO
AbstractA discharge test was conducted to evaluate the degradation of the performance of electrocatalysts in direct methanol fuel cells (DMFCS). The results of transmission electron microscopy (TEM) and X-ray diffraction (XRD) analyses show that after the test, the mean particle size of the anode electrocatalyst did not change, while that of the cathode electrocatalyst increased remarkably. The main reason for the sintering of electrocatalysts is the existence of liquids. Amorphous Ru species in the anode catalyst inhibit the growing of Pt crystallites. The electrochemical surface area (ECSA) decreased. after the discharge test, with a degree higher than the specific surface area (SSA), both for the anode and the cathode. Part of ruthenium was lost from the anode electrocatalyst during the discharge test.
Language英语
WOS IDWOS:000246787400031
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/140703
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Shenyang Inst Technol, Sch Environm & Chem Engn, Shenyang 110168, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Chen Wei-Min,Sun Gong-Quan,Zhao Xin-Sheng,et al. Degradation of electrocatalysts performance in direct methanol fuel cells[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2007,28(5):928-931.
APA Chen Wei-Min,Sun Gong-Quan,Zhao Xin-Sheng,Sun Pi-Chang,Yang Shao-Hua,&Xin Qin.(2007).Degradation of electrocatalysts performance in direct methanol fuel cells.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,28(5),928-931.
MLA Chen Wei-Min,et al."Degradation of electrocatalysts performance in direct methanol fuel cells".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 28.5(2007):928-931.
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