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

doi:10.3390/ma11122573

	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
刊名	MATERIALS
	2018-12-01
卷号	11 期号:12 页码:10
关键词	cobaltite ceramic doping thermoelectric properties sol-gel method cold isostatic pressing
ISSN号	1996-1944
DOI	10.3390/ma11122573
通讯作者	Zeng, Dechang(medczeng@scut.edu.cn)
英文摘要	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.
资助项目	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关键词	CA3CO4O9 ; TRANSPORT ; CA ; LA
WOS研究方向	Materials Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000456419200231
资助机构	Guangdong Provincial Science and Technology Program ; Guangzhou Municipal Science and Technology Program ; Natural Science Foundation of Guangdong Province
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/24566]
专题	中国科学院广州能源研究所
通讯作者	Zeng, Dechang
作者单位	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
推荐引用方式 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.