Effects of Sm Doping on the High Temperature Thermoelectric Properties of Ca3Co4O9+δ-based Compounds

Abstract

Abstract: Ca_3-xSm_xCo₄O_9+δ(x=0, 0.15, 0.3 and 0.45) polycrystalline samples were prepared by using
sol-gel process followed by SPS sintering. Their thermoelectric properties were carefully studied from room temperature to 1000K. The substitution of
Sm for Ca results in the increase of both Seabeck coefficient and electrical resistivity, which could be attributed to the decrease of carrier concentrations.
The Sm substituted samples (x=0.15, 0.3) have lower thermal conductivity than Ca₃Co₄O_9+δ due to their lower electronic and lattice
thermal conductivities. The dimensionless figure of merit ZT reaches 0.3 at 1000K for the sample of Ca_2.7Sm_0.3Co₄O_9+δ.

Key words: Seebeck coefficients, thermoelectric material, figure of merit

CLC Number:

O482
TN37

WANG Dong-Li,CHEN Li-Dong,BAI Sheng-Qiang,LI Jian-Guo. Effects of Sm Doping on the High Temperature Thermoelectric Properties of Ca₃Co₄O_9+δ-based Compounds[J]. Journal of Inorganic Materials.

[1]	CHENG Jun, ZHANG Jiawei, QIU Pengfei, CHEN Lidong, SHI Xun. Preparation and Thermoelectric Transport Properties of P-doped β-FeSi₂ [J]. Journal of Inorganic Materials, 2024, 39(8): 895-902.
[2]	CHEN Hao, FAN Wenhao, AN Decheng, CHEN Shaoping. Improvement of Thermoelectric Performance of SnTe by Energy Band Optimization and Carrier Regulation [J]. Journal of Inorganic Materials, 2024, 39(3): 306-312.
[3]	ZHANG Zhe, SUN Tingting, WANG Lianjun, JIANG Wan. Flexible Thermoelectric Films with Different Ag₂Se Dimensions: Performance Optimization and Device Integration [J]. Journal of Inorganic Materials, 2024, 39(11): 1221-1227.
[4]	MENG Yuting, WANG Xuemei, ZHANG Shuxian, CHEN Zhiwei, PEI Yanzhong. Single- and Two-band Transport Properties Crossover in Bi₂Te₃ Based Thermoelectrics [J]. Journal of Inorganic Materials, 2024, 39(11): 1283-1291.
[5]	SU Haojian, ZHOU Min, LI Laifeng. Optimization of Thermoelectric Properties of SnTe via Multi-element Doping [J]. Journal of Inorganic Materials, 2024, 39(10): 1159-1166.
[6]	XIAO Yani, LYU Jianan, LI Zhenming, LIU Mingyang, LIU Wei, REN Zhigang, LIU Hongjing, YANG Dongwang, YAN Yonggao. Hygrothermal Stability of Bi₂Te₃-based Thermoelectric Materials [J]. Journal of Inorganic Materials, 2023, 38(7): 800-806.
[7]	HE Danqi, WEI Mingxu, LIU Ruizhi, TANG Zhixin, ZHAI Pengcheng, ZHAO Wenyu. Heavy-Fermion YbAl₃ Materials: One-step Synthesis and Enhanced Thermoelectric Performance [J]. Journal of Inorganic Materials, 2023, 38(5): 577-582.
[8]	LI Jianbo, TIAN Zhen, JIANG Quanwei, YU Lifeng, KANG Huijun, CAO Zhiqiang, WANG Tongmin. Effects of Different Element Doping on Microstructure and Thermoelectric Properties of CaTiO₃ [J]. Journal of Inorganic Materials, 2023, 38(12): 1396-1404.
[9]	WANG Pengjiang, KANG Huijun, YANG Xiong, LIU Ying, CHENG Cheng, WANG Tongmin. Inhibition of Lattice Thermal Conductivity of ZrNiSn-based Half-Heusler Thermoelectric Materials by Entropy Adjustment [J]. Journal of Inorganic Materials, 2022, 37(7): 717-723.
[10]	CHENG Cheng, LI Jianbo, TIAN Zhen, WANG Pengjiang, KANG Huijun, WANG Tongmin. Thermoelectric Property of In₂O₃/InNbO₄ Composites [J]. Journal of Inorganic Materials, 2022, 37(7): 724-730.
[11]	ZHAO Yuyao, OUYANG Jun. Columnar Nanograined BaTiO₃ Ferroelectric Thin Films Integrated on Si with a Sizable Dielectric Tunability [J]. Journal of Inorganic Materials, 2022, 37(6): 596-602.
[12]	LOU Xunuo, DENG Houquan, LI Shuang, ZHANG Qingtang, XIONG Wenjie, TANG Guodong. Thermal and Electrcial Transport Properities of Ge Doped MnTe Thermoelectrics [J]. Journal of Inorganic Materials, 2022, 37(2): 209-214.
[13]	JIN Min, BAI Xudong, ZHANG Rulin, ZHOU Lina, LI Rongbin. Metal Sulfide Ag₂S: Fabrication via Zone Melting Method and Its Thermoelectric Property [J]. Journal of Inorganic Materials, 2022, 37(1): 101-106.
[14]	ZHANG Cencen, WANG Xue, PENG Liangming. Thermoelectric Transport Characteristics of n-type (PbTe)_1-_x_-_y(PbS)_x(Sb₂Se₃)_y Systems via Stepwise Addition of Dual Components [J]. Journal of Inorganic Materials, 2021, 36(9): 936-942.
[15]	YANG Qingyu, QIU Pengfei, SHI Xun, CHEN Lidong. Application of Entropy Engineering in Thermoelectrics [J]. Journal of Inorganic Materials, 2021, 36(4): 347-354.

Effects of Sm Doping on the High Temperature Thermoelectric Properties of Ca₃Co₄O_9+δ-based Compounds

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments