Enhanced Thermoelectric Properties of Hole-Doped Bi2-x Ba x Sr2Co2O y Ceramics

被引：23
作者：
He, Q. L. [1 ,2 ,4 ]
Qin, Z. [3 ]
Zhang, J. [3 ]
Gao, F. [1 ,2 ]
Hu, X. [1 ,2 ]
Song, H. Z. [1 ,2 ]
机构：
[1] Zhengzhou Univ, Minist Educ, Key Lab Mat Phys, Zhengzhou 450052, Peoples R China
[2] Zhengzhou Univ, Phys Engn Coll, Zhengzhou 450052, Peoples R China
[3] North China Univ Water Conservancy & Elect Power, Coll Math & Informat Sci, Zhengzhou 450011, Peoples R China
[4] Jiaozuo Teachers Coll, Sch Sci & Technol, Jiaozuo 454000, Peoples R China
来源：
JOURNAL OF ELECTRONIC MATERIALS | 2014年 / 43卷 / 05期
基金：
中国国家自然科学基金;
关键词：
N Thermoelectric materials; element doping; Bi-2-xBa(x)Sr(2)Co(2)O(Y); PERFORMANCE; BI2SR2CO2OY; FIGURE; MERIT;
D O I：
10.1007/s11664-014-3086-5
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The influence of Ba doping on the thermoelectric properties of Bi2-x Ba (x) Sr-2 Co2O (y) (x = 0.00, 0.025, 0.05, 0.075, 0.10, 0.125, and 0.15) samples prepared by the solid-state reaction method was investigated from 333 K to 973 K. For the samples with x a parts per thousand currency sign 0.075, the electrical resistivity decreased with increase of the Ba doping amount due to p-type doping and they exhibited metallic electrical conductivity behavior, whereas the samples with x a parts per thousand yen 0.10 exhibited semiconductor-like electrical conductivity behavior. The Seebeck coefficients of all the samples decreased with increase of the Ba doping amount. The thermal conductivity first decreased for x a parts per thousand currency sign 0.075, then increased with higher Ba doping amounts. As an overall result, the dimensionless figure of merit (ZT) of Bi1.925Ba0.075Sr2Co2O (y) reached the maximum value of 0.245 at 973 K, being 41% higher than that of the undoped sample.
引用
收藏
页码：1432 / 1435
页数：4
相关论文
共 12 条
[1]   Enhancement of the high-temperature thermoelectric performance of Bi2Ba2Co2Ox ceramics [J].
Constantinescu, G. ;
Rasekh, Sh. ;
Torres, M. A. ;
Madre, M. A. ;
Diez, J. C. ;
Sotelo, A. .
SCRIPTA MATERIALIA, 2013, 68 (01) :75-78
[2]   Bi2Sr2Co2Oy whiskers with high thermoelectric figure of merit [J].
Funahashi, R ;
Shikano, M .
APPLIED PHYSICS LETTERS, 2002, 81 (08) :1459-1461
[3]   Oxide thermoelectrics: The challenges, progress, and outlook [J].
He, Jian ;
Liu, Yufei ;
Funahashi, Ryoji .
JOURNAL OF MATERIALS RESEARCH, 2011, 26 (15) :1762-1772
[4]   Enhanced thermoelectric figure-of-merit ZT for hole-doped Bi2Sr2Co2Oy through Pb substitution [J].
Hsu, H. C. ;
Lee, W. L. ;
Wu, K. K. ;
Kuo, Y. K. ;
Chen, B. H. ;
Chou, F. C. .
JOURNAL OF APPLIED PHYSICS, 2012, 111 (10)
[5]   A high thermoelectric figure of merit ZT > 1 in Ba heavily doped BiCuSeO oxyselenides [J].
Li, Jing ;
Sui, Jiehe ;
Pei, Yanling ;
Barreteau, Celine ;
Berardan, David ;
Dragoe, Nita ;
Cai, Wei ;
He, Jiaqing ;
Zhao, Li-Dong .
ENERGY & ENVIRONMENTAL SCIENCE, 2012, 5 (09) :8543-8547
[6]   Enhancement of the Thermoelectric Performance of p-Type Layered Oxide Ca3Co4O9+δ Through Heavy Doping and Metallic Nanoinclusions [J].
Ngo Van Nong ;
Pryds, Nini ;
Linderoth, Soren ;
Ohtaki, Michitaka .
ADVANCED MATERIALS, 2011, 23 (21) :2484-+
[7]   Pb-for-Bi substitution for enhancing thermoelectric characteristics of [(Bi, Pb)2Ba2O4±ω]0.5CoO2 [J].
Sakai, K. ;
Karppinen, M. ;
Chen, J. M. ;
Liu, R. S. ;
Sugihara, S. ;
Yamauchi, H. .
APPLIED PHYSICS LETTERS, 2006, 88 (23)
[8]   Improvement of textured Bi1.6Pb0.4Sr2Co1.8Ox thermoelectric performances by metallic Ag additions [J].
Sotelo, A. ;
Rasekh, Sh. ;
Constantinescu, G. ;
Torres, M. A. ;
Madre, M. A. ;
Diez, J. C. .
CERAMICS INTERNATIONAL, 2013, 39 (02) :1597-1602
[9]   High temperature thermoelectric properties of Bi2Sr2Co2Oy/Ag composites [J].
Wang, Shufang ;
Bai, Zilong ;
Wang, Haifeng ;
Lu, Qing ;
Wang, Jianglong ;
Fu, Guangsheng .
JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 554 :254-257
[10]   Thermoelectric properties of Bi2.2-xPbxSr2Co2Oy system [J].
Xu, GJ ;
Funahashi, R ;
Shikano, M ;
Matsubara, I ;
Zhou, YQ .
JOURNAL OF APPLIED PHYSICS, 2002, 91 (07) :4344-4347
12