Shape-Dependent Activity of Ceria for Hydrogen Electro-Oxidation in Reduced-Temperature Solid Oxide Fuel Cells
文献类型：期刊论文
| 作者 | Tong, XF; Luo, T; Meng, X; Wu, H; Li, JL; Liu, XJ; Ji, XN; Wang, JQ; Chen, CS; Zhan, ZL |
| 刊名 | SMALL
 |
| 出版日期 | 2015 |
| 卷号 | 11期号:41页码:5581—5588 |
| 关键词 | DEFINED SURFACE PLANES GAS SHIFT REACTION CATALYZED SOOT OXIDATION CEO2 NANOCRYSTALS CO OXIDATION ANODE MATERIALS OXYGEN STORAGE SOFC ANODES ADSORPTION NANORODS |
| ISSN号 | 1613-6810 |
| 通讯作者 | Wang, JQ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, 239 Zhangheng Rd, Shanghai 201204, Peoples R China. |
| 英文摘要 | Single crystalline ceria nanooctahedra, nanocubes, and nanorods are hydrothermally synthesized, colloidally impregnated into the porous La0.9Sr0.1Ga0.8Mg0.2O3- (LSGM) scaffolds, and electrochemically evaluated as the anode catalysts for reduced temperature solid oxide fuel cells (SOFCs). Well-defined surface terminations are confirmed by the high-resolution transmission electron microscopy (111) for nanooctahedra, (100) for nanocubes, and both (110) and (100) for nanorods. Temperature-programmed reduction in H-2 shows the highest reducibility for nanorods, followed sequentially by nanocubes and nanooctahedra. Measurements of the anode polarization resistances and the fuel cell power densities reveal different orders of activity of ceria nanocrystals at high and low temperatures for hydrogen electro-oxidation, i.e., nanorods > nanocubes > nanooctahedra at T 450 degrees C and nanooctahedra > nanorods > nanocubes at T 500 degrees C. Such shape-dependent activities of these ceria nanocrystals have been correlated to their difference in the local structure distortions and thus in the reducibility. These findings will open up a new strategy for design of advanced catalysts for reduced-temperature SOFCs by elaborately engineering the shape of nanocrystals and thus selectively exposing the crystal facets. |
| 语种 | 英语 |
| WOS记录号 | WOS:000363593600016 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/25038]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Tong, XF,Luo, T,Meng, X,et al. Shape-Dependent Activity of Ceria for Hydrogen Electro-Oxidation in Reduced-Temperature Solid Oxide Fuel Cells[J]. SMALL,2015,11(41):5581—5588. |
| APA | Tong, XF.,Luo, T.,Meng, X.,Wu, H.,Li, JL.,...&Zhan, ZL.(2015).Shape-Dependent Activity of Ceria for Hydrogen Electro-Oxidation in Reduced-Temperature Solid Oxide Fuel Cells.SMALL,11(41),5581—5588. |
| MLA | Tong, XF,et al."Shape-Dependent Activity of Ceria for Hydrogen Electro-Oxidation in Reduced-Temperature Solid Oxide Fuel Cells".SMALL 11.41(2015):5581—5588. |
入库方式： OAI收割
来源：上海应用物理研究所
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。