Nanostructured Pt-Fe/C cathode catalysts for direct methanol fuel cell: The effect of catalyst composition
文献类型：期刊论文
| 作者 | Li, Wenzhen1; Xin, Qin2; Yan, Yushan3,4 |
| 刊名 | international journal of hydrogen energy
 |
| 出版日期 | 2010-03-01 |
| 卷号 | 35期号:6页码:2530-2538 |
| 关键词 | Platinum-iron alloy Electrocatalyst Cathode Oxygen reduction reaction Direct methanol fuel cell |
| 英文摘要 | a series of carbon supported pt-fe bimetallic nanocatalysts (pt-fe/c) with varying pt:fe ratio were prepared by a modified ethylene glycol (eg) method, and then heat-treated under h(2)-ar (10 vol%-h(2)) atmosphere at 900 degrees c. the pt-fe/c catalysts were characterized by x-ray diffraction (xrd), transmission electron spectroscopy (tem), energy dispersive analysis by x-rays (edx) and induced coupled plasma-atomic emission spectroscopy (icp-aes). xrd analysis shows that pt-fe/c catalysts have small crystalline particles and form better pt-fe alloy structure with fe amount increasing. tem images evidence that small pt-fe nanoparticles homogeneously deposited on carbon support and addition of fe can effectively prevent pt particles agglomeration. edx and icp-aes show that fe precursor cannot be fully reduced and deposited on carbon support through the adopted eg reduction approach. the electrochemical surface area of pt-fe/c catalyst obtained through hydrogen desorption areas in the cv curve increases with fe atomic percentage increasing from 0 to ca. 50%, and then decreases with more fe in the pt-fe/c catalyst. rde tests show that the pt-fe/c with a pt:fe ratio of 1.2:1 and an optimized lattice parameter of around 3.894 angstrom has the highest mass activity and specific activity to oxygen reduction reaction (orr). as cathode catalyst, this pt-fe/c (pt:fe ratio of 1.2:1) exhibits higher direct methanol fuel cell performance at 90 degrees c than pt/c and other pt-fe/c catalysts, this could be attributed to its smaller particle size and better pt-fe alloy structure. (c) 2010 professor t. nejat veziroglu. published by elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; electrochemistry ; energy & fuels |
| 研究领域[WOS] | chemistry ; electrochemistry ; energy & fuels |
| 关键词[WOS] | oxygen-reduction catalysts ; transition-metal sulfides ; supported platinum ; carbon nanotubes ; anode catalysts ; particle-size ; alloy nanoparticles ; fept nanoparticles ; phosphoric-acid ; electrocatalysts |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000276014400033 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141945]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Michigan Technol Univ, Dept Chem Engn, Houghton, MI 49931 USA 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 3.Univ Calif Riverside, Dept Chem & Environm Engn, Ctr Environm Res & Technol CE CERT, Riverside, CA 92521 USA 4.Univ Calif Riverside, Coll Engn, Ctr Environm Res & Technol CE CERT, Riverside, CA 92521 USA |
| 推荐引用方式 GB/T 7714 | Li, Wenzhen,Xin, Qin,Yan, Yushan. Nanostructured Pt-Fe/C cathode catalysts for direct methanol fuel cell: The effect of catalyst composition[J]. international journal of hydrogen energy,2010,35(6):2530-2538. |
| APA | Li, Wenzhen,Xin, Qin,&Yan, Yushan.(2010).Nanostructured Pt-Fe/C cathode catalysts for direct methanol fuel cell: The effect of catalyst composition.international journal of hydrogen energy,35(6),2530-2538. |
| MLA | Li, Wenzhen,et al."Nanostructured Pt-Fe/C cathode catalysts for direct methanol fuel cell: The effect of catalyst composition".international journal of hydrogen energy 35.6(2010):2530-2538. |
入库方式： OAI收割
来源：大连化学物理研究所
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