The spillover of oxygen vacancies over strontium doped lanthanum manganite (LSM) cathode catalysts
文献类型：期刊论文
| 作者 | Wang, SZ; Jiang, Y; Li, WZ; Yan, JW; Li, C; Xin, Q |
| 刊名 | spillover and migration of surface species on catalysts
 |
| 出版日期 | 1997 |
| 卷号 | 112页码:401-410 |
| 关键词 | oxygen vacancy spillover strontium doped lanthanum manganite electrode solid oxide fuel cell three phase boundary |
| 英文摘要 | cyclic voltammetry and potential step techniques were used to characterize the features of the electrochemical reduction of oxygen on the strontium doped lanthanum manganite la(0.8)sr(0.2)mno(3) (lsm) electrode. an enhancement in the electrochemical activity of oxygen reduction and a unique cathodic current hysteresis in cyclic voltammograms were observed. the hysteresis became increasingly marked with the increase of oxygen partial pressure or the decrease of potential scan rate. corresponding to the unique hysteresis of cyclic voltammograms, cathodic currents (i.e. electrochemical activity) during potential step measurements showed an exponential increase with time. the higher the oxygen partial pressure, the shorter time needed for the cathodic current to reach a limiting value. the unique hysteresis in cyclic voltammograms and the increase of the cathodic currents in potential step measurements were found to be related to the formation and spillover of oxygen vacancies at high temperatures, the kinetics of which is determined by temperature, oxygen partial pressure and the cathodic potential applied. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | impedance spectroscopy ; reduction ; la1-xsrxmno3 |
| 收录类别 | ISTP ; SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000071952700044 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/142789]  |
| 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 | Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, SZ,Jiang, Y,Li, WZ,et al. The spillover of oxygen vacancies over strontium doped lanthanum manganite (LSM) cathode catalysts[J]. spillover and migration of surface species on catalysts,1997,112:401-410. |
| APA | Wang, SZ,Jiang, Y,Li, WZ,Yan, JW,Li, C,&Xin, Q.(1997).The spillover of oxygen vacancies over strontium doped lanthanum manganite (LSM) cathode catalysts.spillover and migration of surface species on catalysts,112,401-410. |
| MLA | Wang, SZ,et al."The spillover of oxygen vacancies over strontium doped lanthanum manganite (LSM) cathode catalysts".spillover and migration of surface species on catalysts 112(1997):401-410. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。