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Nano-stuctured Pt-Fe/C as cathode catalyst in direct methanol fuel cell
文献类型：期刊论文
| 作者 | Li, WZ; Zhou, WJ; Li, HQ; Zhou, ZH; Zhou, B; Sun, GQ; Xin, Q |
| 刊名 | electrochimica acta
 |
| 出版日期 | 2004-03-15 |
| 卷号 | 49期号:7页码:1045-1055 |
| 关键词 | platinum-iron alloy electrocatalyst cathode oxygen reduction reaction (ORR) direct methanol fuel cell |
| 英文摘要 | pt-fe/c catalysts were prepared by a modified polyol synthesis method in an ethylene glycol (eg) solution, and then were heat-treated under h-2/ar (10 vol.%) at moderate temperature (300degreesc, pt-fe/c300) or high temperature (900degreesc, pt-fe/c900). as comparison, pt-fe/c alloy catalyst was prepared by a two-step method (pt-fe/000b). x-ray diffraction (xrd) and transmission electron microscopy (tem) images show that particles size of the catalyst increases with the increase of treatment temperatures. pt-fe/c300 catalyst has a mean particle size of 2.8 nm (xrd), 3.6 nm (tem) and some pt-fe alloy was partly formed in this sample. pt-fe/c900b catalyst has the biggest particle size of 6.2 nm (xrd) and the best pt-fe alloy form. cyclicvoltammetry (cv) shows that pt-fe/c300 has larger electrochemical surface area than other pt-fe/c and the highest utilization ratio of 76% among these pt-based catalysts. rotating disk electrode (rde) cathodic curves show that pt-fe/c300 has the highest oxygen reduction reaction (orr) mass activity (ma) and specific activity (sa), as compared with pt/c catalyst in 1.0 m hclo4. however, pt-fe/c catalyst does not appears to be a more active catalyst than pt/c for orr in 1.0 m hclo4 + 0.1 m ch3oh. pt-fe/c300 exhibits higher orr activity and better performance than other pt-fe/c or pt/c catalysts when employed for cathode in direct methanol single cell test, the enhancement of the cell performance is logically attributed to its higher orr activity, which is probably attributed to more pt-0 species existing and fe ion corrosion from the catalyst. (c) 2003 elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | electrochemistry |
| 研究领域[WOS] | electrochemistry |
| 关键词[WOS] | oxygen-reduction catalysts ; transition-metal sulfides ; carbon-supported platinum ; phosphoric-acid ; particle-size ; alloys ; electroreduction ; electrocatalysts ; co ; oxidation |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000189226100005 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/139463]  |
| 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.Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China 2.Headwaters Nano Kinetix, Lawrenceville, NJ 08648 USA 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, WZ,Zhou, WJ,Li, HQ,et al. Nano-stuctured Pt-Fe/C as cathode catalyst in direct methanol fuel cell[J]. electrochimica acta,2004,49(7):1045-1055. |
| APA | Li, WZ.,Zhou, WJ.,Li, HQ.,Zhou, ZH.,Zhou, B.,...&Xin, Q.(2004).Nano-stuctured Pt-Fe/C as cathode catalyst in direct methanol fuel cell.electrochimica acta,49(7),1045-1055. |
| MLA | Li, WZ,et al."Nano-stuctured Pt-Fe/C as cathode catalyst in direct methanol fuel cell".electrochimica acta 49.7(2004):1045-1055. |
入库方式： OAI收割
来源：大连化学物理研究所
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