09 Sr_(0.9)La_(0.1)TiO_3热电材料的制备与电输运调控

董忠平;李安育;王英;肖淑艳;

• 1:内蒙古科技大学材料与冶金学院

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摘要(Abstract)：

采用溶胶-凝胶法制备了Sr_(0.9)La_(0.1)TiO_3前驱物粉体,将其与硬脂酸进行混合,制备陶瓷样品.硬脂酸混合前驱物粉体制备的陶瓷样品具有立方结构,属于Pm-3m空间群,与未混合样品相比较,塞贝克系数绝对值降低,电阻率提高.

关键词(KeyWords)： SrTiO_3;热电材料;电输运;调控

基金项目(Foundation): 国家自然科学基金资助项目(21761027)

作者(Author): 董忠平;李安育;王英;肖淑艳;

Email:

DOI:

参考文献(References)：

• [1] TRITT M T.Thermoelectric phenomena,materials,and applications [J].Annu.Rev.Mater.Res.,2011,41:433.

• [2] LIU W S,HU J Z,ZHANG S M,et al.New trends,strategies and opportunities in thermoelectric materials:A perspective.Mater [J].Today Phys,2017,1:50.

• [3] ELSHEIKH M H,SHNAWAH D A,SABRI M F M,et al.A review on thermoelectric renewable energy:Principle parameters that affect their performance [J].Renew.Sust.Energ.Rev,2014,30:337.

• [4] LIU W S,JIE Q,KIM H S,et al.Current progress and future challenges in thermoelectric power generation:from materials to devices [J].Acta Mater,2015,87:357.

• [5] WALIA S,BALENDHRAN S,NILI H,et al.Transition metal oxides Thermoelectric Properties [J].Prog.Mater Sci,2013,58:1443.

• [6] OHTA H,KIM S,MUNE Y,et al.Giant thermoelectric Seebeck coefficient of a two-dimensional electron gas in SrTiO3 [J].Nat.Mater,2007,6:12.

• [7] OHTA H,SUGIURA K,KOUMOTO K.Recent progress in oxide thermoelectric materials:p-type Ca3CO4O9 and n-type SrTiO3 [J].Inorg.Chem,2008,47:8429.

• [8] SINGH S P,KANAS N,DESISSA T D,et al.Thermoelectric properties of A-site deficient La-doped SrTiO3 at 100～900 ℃ under reducing conditions [J].J.Eur.Ceram.Soc,2020,40(2):401.

• [9] CHEN L,ZHANG S C,WANG L Q,et al.Preparation and photocatalytic properties of strontium titanate powders via sol-gel process [J].J Cryst Growth.,2009,31:746.

• [10] EKREN D,AZOUGH F,GHOLINIA A.Enhancing the thermoelectric power factor of Sr0.9Nd0.1TiO3 through control of the nanostructure and microstructure [J].J.Mater.Chem.A,2018,6:24928.

• [11] GONG C L,DONG G G,HU J X,et al.Effect of reducing annealing on the microstructure and thermoelectric properties of La-Bi co-doped SrTiO3 ceramics [J].J Mater Sci:Mater Electron,2017,28:14893.