| Characteristics of the Activity Loss of Anode Catalyst in DMFC | |
| Alternative Title | Characteristics of the Activity Loss of Anode Catalyst in DMFC |
| Chen Weimin1; Jin Wenying3 | |
| 2012 | |
| Source Publication | RARE METAL MATERIALS AND ENGINEERING
 |
| ISSN | 1002-185X |
| Volume | 41Issue:9Pages:1633-1637 |
| Abstract | The activity loss anode PtRu/C catalyst in direct methanol fuel cell (DMFC) was examined by an electrochemical aging test. The results show that after the aging test, the activity of PtRu/C catalyst toward methanol oxidation decreased obviously. The transmission electron microscopy and X-ray diffraction analysis display that catalyst particles experienced Otswald ripening and directional migration under the electric field during the aging test. The electrochemical impedance spectra show that after the aging test, both the ohmic resistance and the polarization impedance increased remarkably, which is related to the loss of active components. The energy dispersive X-ray analysis shows that the mass ratio of Pt to Ru in the catalyst layer increased noticeably after the test. It is suggested that the loss of active components due to the potential fluctuation is an important factor responsible for the activity loss of the anode catalyst in DMFC. |
| Keyword | METHANOL FUEL-CELLS MEMBRANE-ELECTRODE ASSEMBLIES ADSORBED CO DEGRADATION PERFORMANCE DURABILITY PTRU ELECTROOXIDATION ELECTROCATALYST SPECTROSCOPY direct methanol fuel cell (DMFC) electrocatalyst PtRu/C aging |
| Indexed By | CSCD |
| Language | 英语 |
| CSCD ID | CSCD:4641707 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/148761 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.沈阳理工大学 2.中国科学院金属研究所 3.Guilin University Technol, Guilin 541004, Peoples R China |
| Recommended Citation GB/T 7714 | Chen Weimin,Jin Wenying. Characteristics of the Activity Loss of Anode Catalyst in DMFC[J]. RARE METAL MATERIALS AND ENGINEERING,2012,41(9):1633-1637. |
| APA | Chen Weimin,&Jin Wenying.(2012).Characteristics of the Activity Loss of Anode Catalyst in DMFC.RARE METAL MATERIALS AND ENGINEERING,41(9),1633-1637. |
| MLA | Chen Weimin,et al."Characteristics of the Activity Loss of Anode Catalyst in DMFC".RARE METAL MATERIALS AND ENGINEERING 41.9(2012):1633-1637. |
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