采用溶胶凝胶法制备了Li掺杂的NiO基氧化物热电材料,研究了Li掺杂对其热电性能的影响,实验结果表明：在x=0.03,0.06,0.09掺杂比例范围,Li＋很好地进入了NiO的晶格,没有形成新的杂相。热电性能测试结果显示,在室温至750K的范围内随着Li掺杂量的增加,电导率显著增加,而样品的Seebeck系数随着掺杂浓度增高明显降低,样品Ni0.94Li0.06O在750K的功率因子PF=1.9×10-5 W.m-1.K-2,随温度升高,PF增加趋势明显,表明在高温环境中可具有更大的PF。
Li doped NiO samples were prepared by sol-gel method. The effects of Li doping on the thermal electric properties of NiO were investigated in detail. The results show that no impurity phase exists in the substitution of Li at Ni site. The electrical conductivity and Seebeck coefficient of Ni1-xLixO samples were measured from 300 to 750K. The electrical conductivity increases dramatically with Li content. However, the Seebeck coefficient decreases with Licontent. The power factor of Ni0.94Li006Oreaches 1.9X10 5W-m 1.K 2 at 750K, which portends that the higher value of power factor would be obtained at higher measuring temperature.
参考文献
| [1] | Kim D H;Kim C;Ha D W et al.Fabrication and thermoelectric properties of crystal-aligned nano structured Bi2Te2[J].Journal of Alloys and Compounds,2011,509:5211-5215. |
| [2] | LUDongqing;CHEN Gang;PEI Jian .Effect of erbium substitution on thermoelectric properties of complex oxide Ca3Co2O6 at high temperatures[J].Journal of Rare Earths,2008(2):168-172. |
| [3] | Euvananont, C.;Jantaping, N.;Thanachayanont, C. .Effects of composition and preferred orientation on microstructure and thermoelectric properties of p-type (Bi_xSb_((1-x))) _2Te_3 alloys[J].Current applied physics: the official journal of the Korean Physical Society,2011(Suppl.1):S246-S250. |
| [4] | 李燕,张丽鹏,于先进.氧化物热电材料的研究进展[J].现代技术陶瓷,2010(01):3-8. |
| [5] | 石尧文,乔冠军,金志浩.热电材料研究进展[J].稀有金属材料与工程,2005(01):12-15. |
| [6] | Shin W;Murayama N;Ikeda K et al.Thermoelectric power generation using Li-doped NiO and (Ba,Sr)PbO3 module[J].Journal of Power Sources,2001,103(01):80-85. |
| [7] | Wu Junbo;Nan CeWen;Lin Yuanhua et al.Giant dielectric permittivity observed in Li and Ti doped NiO[J].Physical Review Letters,2002,89(21):217601. |
| [8] | 徐燕芳,杜宁,翟传鑫,张辉,杨德仁.多孔NiO纳米棒：可牺牲模板法制备及其磁性[J].材料科学与工程学报,2011(04):506-512. |
| [9] | 刘爱元,张溪文,韩高荣.溶胶凝胶旋涂法制备NiO薄膜及其电致变色性能[J].材料科学与工程学报,2010(06):896-899,875. |
| [10] | Wei-Luen Jang;Yang-Ming Lu;Weng-Sing Hwang .Electrical properties of Li-doped NiO films[J].Journal of the European Ceramic Society,2010(2):503-508. |
| [11] | Houten S V .Semiconduction in LixNi1-xO[J].Journal of Physics and Chemistry of Solids,1960,17:7-17. |
| [12] | Shin W;Murayama N .Li doped Nickel oxide as a thermoelectric material[J].Japanese Journal of Applied Physics,1999,38:1336-1338. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%