Thermoelectric properties of Sr1-xLaxNb2O6-δ (0 < x ≤ 0.4) ceramics sintered under strongly-reducing conditions

doi:10.1016/j.solidstatesciences.2022.106830

	Thermoelectric properties of Sr1-xLaxNb2O6-δ (0 < x ≤ 0.4) ceramics sintered under strongly-reducing conditions
	Zhu, Min 2; Wang, Fengwu 2; Gu, Yufeng 2; La, Peiqing 1,2
刊名	Solid State Sciences
	2022-03-01
卷号	125
关键词	Electric conductivity Lanthanum compounds Niobium compounds Strontium compounds Thermal conductivity Thermoelectricity Ceramic Chemical state General formulas Heterovalent substitution La 3+ Oxide ceramics Reducing conditions Sr1-xlaxnb2O6-δ Synthesised Thermoelectric properties
ISSN号	1293-2558
DOI	10.1016/j.solidstatesciences.2022.106830
英文摘要	A series of oxide ceramics with the general formula of Sr1-xLaxNb2O6-δ (x = 0.1, 0.2, 0.3, 0.4) was synthesized and the characterization was study in detailed. The XPS results reveal that the heterovalent substitution of La3+ for Sr2+ leads to the Nb4+ dominated chemical state in this series of oxides, and a mass of oxygen vacancy defects exist in the oxides after annealed in strong reduction atmospheres. Due to increased phonon scattering by lattice distortion and heavier La atoms, all of the samples achieve lower thermal conductivity. The electrical resistivity and the magnitudes of Seebeck coefficient monotonically decrease with the increase of the content of lanthanum. Overall, the sample of Sr0.6La0.4Nb2O6 reaches the maximum ZT of ∼0.13 at 1073 K. © 2022 Elsevier Masson SAS
WOS研究方向	Chemistry ; Physics
语种	英语
出版者	Elsevier Masson s.r.l.
WOS记录号	WOS:000820830300002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157959]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advance Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China;
推荐引用方式 GB/T 7714	Zhu, Min,Wang, Fengwu,Gu, Yufeng,et al. Thermoelectric properties of Sr1-xLaxNb2O6-δ (0 < x ≤ 0.4) ceramics sintered under strongly-reducing conditions[J]. Solid State Sciences,2022,125.
APA	Zhu, Min,Wang, Fengwu,Gu, Yufeng,&La, Peiqing.(2022).Thermoelectric properties of Sr1-xLaxNb2O6-δ (0 < x ≤ 0.4) ceramics sintered under strongly-reducing conditions.Solid State Sciences,125.
MLA	Zhu, Min,et al."Thermoelectric properties of Sr1-xLaxNb2O6-δ (0 < x ≤ 0.4) ceramics sintered under strongly-reducing conditions".Solid State Sciences 125(2022).