Effect of Alkali Carbonates (Single, Binary, and Ternary) on Doped Ceria: A Composite Electrolyte for Low-Temperature Solid Oxide Fuel Cells

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	Effect of Alkali Carbonates (Single, Binary, and Ternary) on Doped Ceria: A Composite Electrolyte for Low-Temperature Solid Oxide Fuel Cells
	Ahmad, M. Ashfaq; Ali, Amjad; Rafique, Asia; Kaleemullah, Muhammad; Abbas, Ghazanfar; Khan, M. Ajmal; Raza, Rizwan
刊名	ACS APPLIED MATERIALS & INTERFACES
	2018
卷号	10 期号:1 页码:806-818
关键词	Sdc/na2co3 Nanocomposite Electrolyte Enhanced Ionic-conductivity Electrical-properties Magnetic-properties Thin-films Sofcs Proton Ce0.8sm0.2o2-delta Performance Stability
英文摘要	Samarium-doped ceria (SDC) carbonate has become an attractive electrolyte for fuel cells because of its remarkable ion conductivity and high performance. Different doped ceria-carbonate (single-carbonate SDC, binary-carbonate SDC, and ternary-carbonate SDC) electrolytes were synthesized by the coprecipitation/oxalate method, to optimize the electro-chemical performance. The structure; morphology; and thermal, optical, and surface properties have been studied using a variety of techniques. The X-ray diffraction results confirmed the successful incorporation of samarium into ceria as a crystalline structure and inclusion of carbonate, which is amorphous in nature. To analyze the conduction mechanism, direct current conductivity was measured in a H-2/O-2 atmosphere. Doped ceria-binary carbonate ((Li/Na)CO3-SDC) showed the best conductivity of 0.31 S cm(-1) and power density of 617 mW cm(-2), at 600 degrees C. The enhancement in the ionic conductivity and performance of the composites is due to the contribution of hybrid ions (O2-, H+). The crystallite size of the composites was in the range 21-41 nm. For the calculation of band gaps, optical absorption spectra of the synthesized powders were analyzed, and they showed a red shift with the band gap energy in the range 2.6-3.01 eV, when compared to that of pure ceria (3.20 eV).
学科主题	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/16880]
专题	2018专题
推荐引用方式 GB/T 7714	Ahmad, M. Ashfaq,Ali, Amjad,Rafique, Asia,et al. Effect of Alkali Carbonates (Single, Binary, and Ternary) on Doped Ceria: A Composite Electrolyte for Low-Temperature Solid Oxide Fuel Cells[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(1):806-818.
APA	Ahmad, M. Ashfaq.,Ali, Amjad.,Rafique, Asia.,Kaleemullah, Muhammad.,Abbas, Ghazanfar.,...&Raza, Rizwan.(2018).Effect of Alkali Carbonates (Single, Binary, and Ternary) on Doped Ceria: A Composite Electrolyte for Low-Temperature Solid Oxide Fuel Cells.ACS APPLIED MATERIALS & INTERFACES,10(1),806-818.
MLA	Ahmad, M. Ashfaq,et al."Effect of Alkali Carbonates (Single, Binary, and Ternary) on Doped Ceria: A Composite Electrolyte for Low-Temperature Solid Oxide Fuel Cells".ACS APPLIED MATERIALS & INTERFACES 10.1(2018):806-818.