Long-term oxidation and electrical behavior of Nb-doped Ti3SiC2 as solid oxide fuel cell interconnects
文献类型：期刊论文
| 作者 | Zheng, Li-Li ; Li, Xi-Chao ; Hua, Qing-Song ; Dai, Zuo-Qiang ; Zhang, Tie-Zhu ; Qian, Yu-Hai ; Xu, Jing-Jun ; Li, Mei-Shuan |
| 刊名 | JOURNAL OF THE AMERICAN CERAMIC SOCIETY
 |
| 出版日期 | 2017-07-01 |
| 卷号 | 100期号:7页码:3155-3164 |
| 关键词 | area-specific resistance interconnect Nb doping oxidation Ti3SiC2 |
| ISSN号 | 0002-7820 |
| 通讯作者 | Zheng, LL (reprint author), Qingdao Univ, Power & Energy Storage Syst Res Ctr, Qingdao, Peoples R China. ; Zheng, LL (reprint author), Qingdao Univ, Coll Mech & Elect Engn, Qingdao, Peoples R China. ; Li, MS (reprint author), Chinese Acad Sci, High Performance Ceram Div, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang, Peoples R China. |
| 中文摘要 | Nb-doped Ti3SiC2 compounds ((Ti1-xNbx)(3)SiC2, x=0%, 2%, 5%, 7%, and 10%) as novel interconnect materials of intermediate temperature solid oxide fuel cell (IT-SOFC) were studied in the simulated cathode atmosphere. The long-term oxidation behaviors and area-specific resistance (ASR) of these compounds have been investigated at 800 degrees C up to 700hours. Among these compounds, (Ti0.95Nb0.05)(3)SiC2 shows the best oxidation resistance and lowest postoxidation ASR (5.6mcm(2) after exposure at 800 degrees C in air for 700hours), endowing it a great promising material in the application as interconnect of IT-SOFC. After oxidation, Nb is mainly doped uniformly into the lattice of rutile-TiO2 (r-TiO2) grains formed on the tested compounds. Nb doping could decrease the concentrations of both oxygen vacancies and titanium interstitials in r-TiO2. As a result, the oxidation rate of (Ti,Nb)(3)SiC2 decreases remarkably, the structure of the oxide scale changes from a duplex layer of TiO2 outer layer and TiO2+SiO2 mixture inner layer to a single mixture layer. Nb doping also increases the amount of semifree electrons, causing the significant reduce of the postoxidation ASR of (Ti,Nb)(3)SiC2. |
| 学科主题 | Materials Science, Ceramics |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China [51271191, 51571205] |
| 语种 | 英语 |
| 公开日期 | 2017-08-17 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78060]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Zheng, Li-Li,Li, Xi-Chao,Hua, Qing-Song,et al. Long-term oxidation and electrical behavior of Nb-doped Ti3SiC2 as solid oxide fuel cell interconnects[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2017,100(7):3155-3164. |
| APA | Zheng, Li-Li.,Li, Xi-Chao.,Hua, Qing-Song.,Dai, Zuo-Qiang.,Zhang, Tie-Zhu.,...&Li, Mei-Shuan.(2017).Long-term oxidation and electrical behavior of Nb-doped Ti3SiC2 as solid oxide fuel cell interconnects.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,100(7),3155-3164. |
| MLA | Zheng, Li-Li,et al."Long-term oxidation and electrical behavior of Nb-doped Ti3SiC2 as solid oxide fuel cell interconnects".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 100.7(2017):3155-3164. |
入库方式： OAI收割
来源：金属研究所
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