Influence of Surface Roughness of YSZ on Polarization of Pt Electrode Deposited on the Electrolyte
文献类型：期刊论文
| 作者 | Wang, Guangwei1,2; Li, Heping1; Xu, Yuanjian2; Xu, Liping1; Zhang, Lei1,3
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| 刊名 | INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
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| 出版日期 | 2013-07-01 |
| 卷号 | 8期号:7页码:9093-9106 |
| 关键词 | surface roughness Pt/YSZ electrode polarization chronoamperometry chronopotentiometry |
| ISSN号 | 1452-3981 |
| 通讯作者 | Wang, GW (reprint author), Chinese Acad Sci, Inst Geochem, Lab High Temp & High Pressure Study Earths Interi, Guiyang 550002, Peoples R China. |
| 英文摘要 | The influence of surface roughness of YSZ on polarization of Pt electrode deposited on the electrolyte was investigated in ambient air at 600 degrees C, with emphasis put on the comparative analysis for the anodic and cathodic polarization of Pt electrode prepared by using different grade of diamond pastes. Generally, at the absolute over-potentials up to 0.3V, the limiting currents passing through the electrode during anodic polarization were lower than that under cathodic bias result from the depressed site-exchange reaction of oxygen and platinum atoms. However, while the electrode was polarized at the absolute over-potentials larger than 0.3V, the more pronounced electro-activity for oxidation was found ascribed to the promotion of site-exchange reaction. Although a relatively smaller quantity of oxygen anions oxidized at the limited interfaces of the electrode prepared by using 1000 grade diamond paste than that of the electrode prepared by using 400 grade paste, the site-exchange reaction might be actuated by the concentrated contact area in the former electrode, which made it exhibits the maxmum electro-catalytic activity at the over-potentials lower than 0.4V. As the polarization signal increased, the second electrode won and held the best performance due to the saturation of site-exchange reaction. The further chronopotentiometric experiments demonstrated that the electrode was more active towards oxidation than towards reduction reactions under strong polarization. And the remarkable enhancement of electro-catalytic activity was not observed during both potentiostatic and amperostatic polarization experiments might be due to the short polarization time and relatively low temperature. |
| 资助项目 | National Natural Science Foundation of China[41203047] ; National High-Tech Research and Development Program of China[2010AA09Z207] ; "135" Program of Institute of Geochemistry (Chinese Academy of Sciences) ; Large-scale Scientific Apparatus Development Program of Chinese Academy of Sciences[YZ200720] |
| WOS研究方向 | Electrochemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000323547600015 |
| 出版者 | ESG |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/532]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Wang, Guangwei |
| 作者单位 | 1.Chinese Acad Sci, Inst Geochem, Lab High Temp & High Pressure Study Earths Interi, Guiyang 550002, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China 3.Inst Geol Surveying & Mapping Anhui Prov, Hefei 230022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Guangwei,Li, Heping,Xu, Yuanjian,et al. Influence of Surface Roughness of YSZ on Polarization of Pt Electrode Deposited on the Electrolyte[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2013,8(7):9093-9106. |
| APA | Wang, Guangwei,Li, Heping,Xu, Yuanjian,Xu, Liping,&Zhang, Lei.(2013).Influence of Surface Roughness of YSZ on Polarization of Pt Electrode Deposited on the Electrolyte.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,8(7),9093-9106. |
| MLA | Wang, Guangwei,et al."Influence of Surface Roughness of YSZ on Polarization of Pt Electrode Deposited on the Electrolyte".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 8.7(2013):9093-9106. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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