Scandium-doped PrBaCo2-xScxO6-delta oxides as cathode material for intermediate-temperature solid oxide fuel cells
文献类型：期刊论文
| 作者 | Li, Xiangnan1; Jiang, Xuening1; Xu, Hongxia1; Xu, Qiuli1; Jiang, Lei2; Shi, Yuchao1; Zhang, Qingyu1 |
| 刊名 | international journal of hydrogen energy
 |
| 出版日期 | 2013-09-10 |
| 卷号 | 38期号:27页码:12035-12042 |
| 关键词 | Cathode Sc3+ doping Oxygen content Structure Thermal expansion Performance |
| 英文摘要 | scandium-doped prbaco2-xscxo6-delta(pbcs-x, x = 0.00-1.00) oxides have been evaluated as cathode materials of intermediate-temperature solid oxide fuel cells (it-sofcs) with respect to phase structure, oxygen content, thermal expansion behavior and electrical and electrochemical properties. the xrd results have demonstrated a phase transition in pbcs-x due to sc3+ doping from tetragonal double-layered perovskite structure at x = 0.00 -0.20, bi-phase mixtures at x = 0.30-0.40, to cubic perovskite structure at x = 0.50-0.90. the oxygen contents (6-delta) and average valences of cobalt ions in pbcs-x decrease with the higher sc3+ content and increasing temperatures in air. sc3+ doping has also led to decreased thermal expansion coefficients, lowered electrical conductivities and enhanced electrochemical reaction activities for pbcs-x characterized by decreased area-specific resistances (asrs) and smaller reaction activation energies. among the studied samples, the pbcs-0.50 oxide with sc3+-doping content of x = 0.50 exhibits the best electrochemical performance on ce0.9gd0.1o1.95 electrolyte. its asr values range from 0.123 omega cm(2) at 600 degrees c to 0.022 omega cm(2) at 750 degrees c, which are much lower than the related cathode materials. these results have demonstrated that the pbcs-0.50 oxide is a promising cathode material for it-sofcs. copyright (c) 2013, hydrogen energy publications, llc. published by elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; electrochemistry ; energy & fuels |
| 研究领域[WOS] | chemistry ; electrochemistry ; energy & fuels |
| 关键词[WOS] | lnbaco(2)o(5+delta) ; diffusion ; stability ; ion |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000324563200041 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/137652]  |
| 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.Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem & Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiangnan,Jiang, Xuening,Xu, Hongxia,et al. Scandium-doped PrBaCo2-xScxO6-delta oxides as cathode material for intermediate-temperature solid oxide fuel cells[J]. international journal of hydrogen energy,2013,38(27):12035-12042. |
| APA | Li, Xiangnan.,Jiang, Xuening.,Xu, Hongxia.,Xu, Qiuli.,Jiang, Lei.,...&Zhang, Qingyu.(2013).Scandium-doped PrBaCo2-xScxO6-delta oxides as cathode material for intermediate-temperature solid oxide fuel cells.international journal of hydrogen energy,38(27),12035-12042. |
| MLA | Li, Xiangnan,et al."Scandium-doped PrBaCo2-xScxO6-delta oxides as cathode material for intermediate-temperature solid oxide fuel cells".international journal of hydrogen energy 38.27(2013):12035-12042. |
入库方式： OAI收割
来源：大连化学物理研究所
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