Enhanced Thermoelectric Properties of Ca3-xAgxCo4O9 by the Sol-Gel Method with Spontaneous Combustion and Cold Isostatic Pressing

doi:10.3390/ma11122573

GIEC OpenIR

	Enhanced Thermoelectric Properties of Ca3-xAgxCo4O9 by the Sol-Gel Method with Spontaneous Combustion and Cold Isostatic Pressing
	Fan, Youyu 1; Qi, Xiaoling 2; Zeng, Dechang 1
	2018-12-01
Source Publication	MATERIALS
ISSN	1996-1944
Volume	11 Issue:12 Pages:10
Corresponding Author	Zeng, Dechang(medczeng@scut.edu.cn)
Abstract	In this study, Ca3-xAgxCo4O9 ceramics were synthesized by the sol-gel method combined with spontaneous combustion and cold isostatic pressing. The Ca3-xAgxCo4O9 ceramics were characterized via X-ray diffraction and scanning electron microscopy. Thermoelectric properties of the ceramics were measured from 323 to 673 K. The results indicated that Ag doping significantly affected the microstructure and thermoelectric properties. With the increase in Ag content and gradual increase in electrical conductivity, the Seebeck coefficient first increased and then decreased, whereas the thermal conductivity exhibited the opposite case. The figure of merit, ZT, was 0.17 at 673 K for the Ca2.8Ag0.2Co4O9 sample. These results indicated that the thermoelectric properties could be optimized remarkably with the substitution of Ag.
Keyword	cobaltite ceramic doping thermoelectric properties sol-gel method cold isostatic pressing
DOI	10.3390/ma11122573
WOS Keyword	CA3CO4O9 ; TRANSPORT ; CA ; LA
Indexed By	SCI
Language	英语
Funding Project	Guangdong Provincial Science and Technology Program[2015A050502015] ; Guangzhou Municipal Science and Technology Program[2016201604030070] ; Guangzhou Municipal Science and Technology Program[201707010056] ; Guangzhou Municipal Science and Technology Program[201604016103] ; Natural Science Foundation of Guangdong Province[2016A030313494]
WOS Research Area	Materials Science
Funding Organization	Guangdong Provincial Science and Technology Program ; Guangzhou Municipal Science and Technology Program ; Natural Science Foundation of Guangdong Province
WOS Subject	Materials Science, Multidisciplinary
WOS ID	WOS:000456419200231
Publisher	MDPI
Citation statistics	Cited Times:3[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.giec.ac.cn/handle/344007/24567
Collection	中国科学院广州能源研究所
Corresponding Author	Zeng, Dechang
Affiliation	1.South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
Recommended Citation GB/T 7714	Fan, Youyu,Qi, Xiaoling,Zeng, Dechang. Enhanced Thermoelectric Properties of Ca3-xAgxCo4O9 by the Sol-Gel Method with Spontaneous Combustion and Cold Isostatic Pressing[J]. MATERIALS,2018,11(12):10.
APA	Fan, Youyu,Qi, Xiaoling,&Zeng, Dechang.(2018).Enhanced Thermoelectric Properties of Ca3-xAgxCo4O9 by the Sol-Gel Method with Spontaneous Combustion and Cold Isostatic Pressing.MATERIALS,11(12),10.
MLA	Fan, Youyu,et al."Enhanced Thermoelectric Properties of Ca3-xAgxCo4O9 by the Sol-Gel Method with Spontaneous Combustion and Cold Isostatic Pressing".MATERIALS 11.12(2018):10.

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