Effects of Ag or Yb Doping on Thermoelectric Properties of Ca3Co3.9Cu0.1O9-δ†

doi:10.7503/cjcu20160871

Abstract

Abstract:

A series of ceramic materials Ca_3-_xAg_xCo_3.9Cu_0.1O₉_-δ(x=0.1, 0.15, 0.2, 0.3) and Ca_3-_yYb_yCo_3.9Cu_0.1O₉_-δ(y=0.05, 0.1, 0.2, 0.3) which worked from 300 K to 880 K with excellent thermoelectric properties was prepared via sol-gel and cold-pressing method. The XRD results and SEM images revealed that the prepared samples are uniform crystal particles with high purity. Ag⁺ and Yb³⁺ ions have replaced the position of Ca²⁺ ions and they are dissolved in the crystal, which changes the cell volume of the dual doping materials but does not change the crystal symmetric structure. The resistivity and Seebeck coefficient of the materials reveal that the concentration of the current carrier is optimized by dual doping, accordingly the resistivity decreases continuously and the value of Seebeck coefficient increases continuously with the increase of temperature. It can be concluded from the calculations that the effective mass of the electron contributes to the increase of Seebeck coefficient. The thermal conductivity of dual doped samples decreases with the increase of temperature, and the phonon thermal conductivity still contributes more in the prepared system, which is consistent with the results of single doped samples. The figure of merit ZT of Ca_2.7Ag_0.3Co_3.9Cu_0.1O₉_-δ reaches 0.2 at 880 K.

Key words: Dual doping, Sol-gel method, Thermoelectric property, Ceramics

CLC Number:

O614

TrendMD:

YANG Tao, CHENG Tiexin, ZHOU Guangdong. Effects of Ag or Yb Doping on Thermoelectric Properties of Ca₃Co_3.9Cu_0.1 $O 9 - δ †$ [J]. Chem. J. Chinese Universities, 2017, 38(3): 335.

Figures/Tables 11

Fig.1 XRD patterns of Ca3-xAgxCo3.9Cu0.1O9-δ(A), Ca3-yYbyCo3.9Cu0.1O9-δ(B) and Ca3Co3.9Cu0.1O9-δ(C) powders

Table 1 Lattice parameter and unit-cell volume of Ca3-xAgxCo3.9Cu0.1O9-δ

Sample	a/nm	b₁/nm	c/nm	V/nm³
Ca₃Co₄O₉_-δ	0.4837	0.4559	1.0733	0.2367
Ca_2.9Ag_0.1Co_3.9Cu_0.1O₉_-δ	0.4821	0.4501	1.1009	0.2389
Ca_2.85Ag_0.15Co_3.9Cu_0.1O₉_-δ	0.4819	0.4491	1.1047	0.2391
Ca_2.8Ag_0.2Co_3.9Cu_0.1O₉_-δ	0.4811	0.4482	1.1099	0.2393
Ca_2.7Ag_0.3Co_3.9Cu_0.1O₉_-δ	0.4802	0.4475	1.1162	0.2399
Ca_2.7Ag_0.3Co_3.9Cu_0.1O₉_-δ (bulk)	0.4802	0.4463	1.1172	0.2394

Table 2 Lattice parameter and unit-cell volume of Ca3-yYbyCo3.9Cu0.1O9-δ

Sample	a/nm	b₁/nm	c/nm	V/nm³
Ca₃Co₄O₉_-δ	0.4837	0.4559	1.0733	0.2367
Ca_2.95Yb_0.05Co_3.9Cu_0.1O₉_-δ	0.4841	0.4582	1.0599	0.2351
Ca_2.9Yb_0.1Co_3.9Cu_0.1O₉_-δ	0.4855	0.4632	1.0432	0.2345
Ca_2.8Yb_0.2Co_3.9Cu_0.1O₉_-δ	0.4863	0.4698	1.0185	0.2327
Ca_2.8Yb_0.2Co_3.9Cu_0.1O₉_-δ(bulk)	0.4863	0.4691	1.0178	0.2322
Ca_2.7Yb_0.3Co_3.9Cu_0.1O₉_-δ	0.4876	0.4719	1.0005	0.2302

Fig.2 XRD patterns of Ca2.7Ag0.3Co3.9Cu0.1O9-δ(A) and Ca2.8Yb0.2Co3.9Cu0.1O9-δ(B) a. Powder; b. bulk.

Fig.3 SEM images of Ca2.7Ag0.3Co3.9Cu0.1O9-δ(A) and Ca2.8Yb0.2Co3.9Cu0.1O9-δ(B)

Fig.4 Temperature dependence of the electrical resistivity for dual-doped sample (A) a. Ca3Co4O9-δ; b. Ca2.8Ag0.2Co3.9Cu0.1O9-δ; c. Ca3Co3.9Cu0.1O9-δ; d. Ca2.7Ag0.3Co3.9Cu0.1O9-δ; (B) a. Ca2.7Yb0.3Co3.9Cu0.1O9-δ; b. Ca3Co4O9-δ; c. Ca2.8Yb0.2Co3.9Cu0.1O9-δ; d. Ca3Co3.9Cu0.1O9-δ.

Fig.5 Temperature dependence of Seebeck coefficient for dual-doped sample

Fig.6 Different dual-doped sample of the Seebeck coefficient and effective mass a. Ca3Co4O9-δ; b. Ca2.8Ag0.2Co3.9Cu0.1O9-δ; c. Ca2.7Ag0.2Co3.9Cu0.1O9-δ; d. Ca2.8Yb0.2Co3.9Cu0.1O9-δ; e. Ca2.7Yb0.3Co3.9Cu0.1O9-δ.

Table 3 Power factor of dual-doped sample at 880 K

Sample	P/(μW·mK^-2)	Sample	P/(μW·mK^-2)
Ca_2.7Ag_0.3Co_3.9Cu_0.1O₉_-δ	337	Ca_2.8Ag_0.2Co_3.9Cu_0.1O₉_-δ	229
Ca₃Co_3.9Cu_0.1O₉_-δ	316	Ca_2.7Yb_0.3Co_3.9Cu_0.1O₉_-δ	213
Ca_2.8Yb_0.2Co_3.9Cu_0.1O₉_-δ	244	Ca₃Co₄O₉_-δ	189

Fig.7 Temperature dependence of the thermal conductivity and ZT for Ca2.7Ag0.3Co3.9Cu0.1O9-δ

Fig.8 Temperature dependence of total κ(■□), phonon thermal conductivity κp(▼▽) and carrier thermal conductivity κc(●○) for Ca3Co4O9-δ(solid symbols) and Ca2.7Ag0.3Co3.9Cu0.1O9-δ(open symbols), respectively

References 25

[1]	Zhang Q., Sun Y. M., Xu W., Zhu D. B., Adv. Mater., 2014, 26(40), 6829—6851
[2]	Saleemi M., Toprak M. S., Li S. H., Johnsson M., Muhammed M., J. Mater. Chem., 2012, 22(2), 725—730
[3]	Dong G. H., Zhu Y. J., Chen L. D., J. Mater. Chem., 2010, 20(10), 1976—1981
[4]	Yao Q., Chen L. D., Zhang W. Q., Liufu S. C., Chen X. H., ACS Nano, 2010, 4( 4), 2445—2451
[5]	Poudel B., Hao Q., Science,2008, 320(5876), 634—642
[6]	Fan X. A., Yang J. Y., Chen R. G., J. Phys. D. Appl. Phys.,2006, 39(4), 740—752
[7]	Li Y. L., Jiang J., Xu G. J., Li W., Zhou L. M., Li Y., Cui P., J. Alloy. Compd., 2009, 480(2), 954—968
[8]	Chen X. Z., Liu L. F., Dong Y., Ma S. T., Prog. Nat. Sci.-Mater., 2012, 22(3), 201—213
[9]	Xie W. J., Tang X. F., Yan Y. G., Appl. Phys. Lett., 2009, 94(10), 1—13
[10]	Chen H., Liu D. W., Zhang B. P., J. Electron. Mater., 2011, 40(8), 942—952
[11]	Li D., Sun R. R., Qin X. Y., Prog. Nat. Sci.-Mater., 2011, 21(4), 336—348
[12]	Ma X. Y., Zhang X., Lu Q., Zhang J. X., Rare Metal. Mat. Eng., 2012, 41(6), 1097—1109
[13]	Xiu W. J., Ying P. Z., Cui J. L., Ma W. W., Shao D. Q., Rare Metal. Mat. Eng., 2008, 37(2), 334—345
[14]	Yu F. R., Xu B., Zhang J. J., Yu D. L., He J. L., Liu Z. Y., Tian Y. J., Mater. Res. Bull., 2012, 47(6), 1432—1444
[15]	Liang A. S., Li J. J., Pan C. J., Wang L., Chem. J. Chinese Universities, 2016, 37(6), 1161—1167
	(梁安生, 李俊杰, 潘成军, 王雷. 高等学校化学学报, 2016, 37(6), 1161—1167)
[16]	Tang G. D., Yang W. C., He Y., Jiang S., Sun X. P., Ceram. Int., 2015, 41, 7115—7118
[17]	Wu N. Y., Nong N. V., Pryds N., J. Alloy. Compd., 2015, 638, 127—132
[18]	Butt S., Wei X., He W. Q., Wu J. H., J. Mater. Chem. A., 2014, 2, 19479—19487
[19]	Constantinescu G., Madre M. A., Rasekh S., Torres M. A., Diez J. C., Sotelo A., Ceram. Int., 2014, 40(4), 6255—6260
[20]	Liu Y., Li H. J., Chen H. M., J. Phys. Chem. Solids, 2014, 75(5), 606—610
[21]	Zhang D. W., Mi X. N., Wang Z. H., Tang G. D., Wu Q. S., Ceram. Int., 2014, 40(8), 12313—12318
[22]	Demirel S., AltinE., OZ E., Altin S., Bayri A., J. Alloy. Compd., 2015, 627, 430—437
[23]	Constantinescu G., RasekhS., Torres M. A., Madre M. A., Sotelo A., Diez J. C., J. Mater. Sci.-Marer. El., 2015, 26(6), 3466—3473
[24]	Prasoetsopha N., PinitsoontornS., Kamanna T., Kurosaki K., Ohishi Y., Muta H., Yamanaka S., J. Eelectron. Mater., 2014, 43(6), 2064—2071
[25]	LimeletteP., Hardy V., Auban-Senzier P., JéromeD., FlahautD., Hébert S., FrésardR., Simon C., NoudemJ., MaignanA., Phys. Rev. B, 2005, 71(23), 233108-233112

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Effects of Ag or Yb Doping on Thermoelectric Properties of Ca₃Co_3.9Cu_0.1 $O 9 - δ †$

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