A new in situ strategy to eliminate partial internal short circuit in Ce0.8Sm0.2O1.9-based solid oxide fuel cells
文献类型：期刊论文
| 作者 | Gong, Zheng1 ; Sun, Wenping2; Cao, Jiafeng1; Wu, Yusen1; Miao, Lina1; Liu, Wei1,3
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| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
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| 出版日期 | 2017-07-07 |
| 卷号 | 5期号:25页码:12873-12878 |
| DOI | 10.1039/c7ta03527f |
| 文献子类 | Article |
| 英文摘要 | Partial internal short circuit resulting from the Ce4+/Ce3+ redox reaction is currently one of the most critical issues that hinder the practical application of solid oxide fuel cells (SOFCs) with doped ceria electrolytes. In this work, a new strategy utilizing a Sr diffusion induced in situ solid-state reaction to generate a blocking layer to prevent Ce0.8Sm0.2O1.9 (SDC) from reduction is proposed for the first time. As a proof of concept, Ni-SrCe0.95Yb0.05O3-delta is deployed as a Sr source for the electron-blocking interlayer and was evaluated as an anode for SDC-based SOFCs. A thin interlayer composed of SrCe1-x(Sm,Yb)(x)O3-delta and SDC is formed in situ during the sintering process of the half cell due to the interdiffusion of metal cations, and the interlayer thickness is highly dependent on the sintering temperature. The high-resolution TEM results indicate that the SrCe1-x(Sm,Yb)(x)O3-delta perovskite phase is generated and coated on the SDC grains, forming an SDC@SrCe1-x(Sm,Yb)(x)O3-delta core-shell structure. The SrCe1-x(Sm,Yb)(x)O3-delta phase effectively suppresses the Ce4+/Ce3+ redox reaction and hence eliminates electronic conduction through the electrolyte membrane. Consequently, the OCVs of the fuel cell are significantly improved after incorporating the electron-blocking interlayer and increase with increasing the interlayer thickness. The OCVs of the cell sintered at 1250 degrees C reach 0.962, 0.989, 1.017, and 1.039 V at 650, 600, 550, and 500 degrees C, respectively. The present results demonstrate that Ni-SrCeO3-based composites are promising alternative anodes for CeO2-based SOFCs towards enhanced working efficiency at high operating voltages. |
| WOS关键词 | LOW-TEMPERATURE ; SDC ELECTROLYTE ; BLOCKING LAYER ; PERFORMANCE ; CATHODES ; SURFACE ; SOFCS ; SR ; MICROSTRUCTURE ; SEGREGATION |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000404571500027 |
| 资助机构 | National Natural Science Foundation of China(21676261 ; National Natural Science Foundation of China(21676261 ; National Natural Science Foundation of China(21676261 ; National Natural Science Foundation of China(21676261 ; Australian Research Council (ARC) DECRA Grant(DE160100596) ; Australian Research Council (ARC) DECRA Grant(DE160100596) ; Australian Research Council (ARC) DECRA Grant(DE160100596) ; Australian Research Council (ARC) DECRA Grant(DE160100596) ; U1632131) ; U1632131) ; U1632131) ; U1632131) ; National Natural Science Foundation of China(21676261 ; National Natural Science Foundation of China(21676261 ; National Natural Science Foundation of China(21676261 ; National Natural Science Foundation of China(21676261 ; Australian Research Council (ARC) DECRA Grant(DE160100596) ; Australian Research Council (ARC) DECRA Grant(DE160100596) ; Australian Research Council (ARC) DECRA Grant(DE160100596) ; Australian Research Council (ARC) DECRA Grant(DE160100596) ; U1632131) ; U1632131) ; U1632131) ; U1632131) |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/31980]  |
| 专题 | 合肥物质科学研究院_中科院固体物理研究所 |
| 作者单位 | 1.Univ Sci & Technol China, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China 2.Univ Wollongong, Australian Inst Innovat Mat, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia 3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Zheng,Sun, Wenping,Cao, Jiafeng,et al. A new in situ strategy to eliminate partial internal short circuit in Ce0.8Sm0.2O1.9-based solid oxide fuel cells[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(25):12873-12878. |
| APA | Gong, Zheng,Sun, Wenping,Cao, Jiafeng,Wu, Yusen,Miao, Lina,&Liu, Wei.(2017).A new in situ strategy to eliminate partial internal short circuit in Ce0.8Sm0.2O1.9-based solid oxide fuel cells.JOURNAL OF MATERIALS CHEMISTRY A,5(25),12873-12878. |
| MLA | Gong, Zheng,et al."A new in situ strategy to eliminate partial internal short circuit in Ce0.8Sm0.2O1.9-based solid oxide fuel cells".JOURNAL OF MATERIALS CHEMISTRY A 5.25(2017):12873-12878. |
入库方式： OAI收割
来源：合肥物质科学研究院
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