自蔓延法制备[Ca2.95Sm0.05Co3.995-xNi0.005FexO9+δ]及其热电性能的研究

doi:10.13228/j.boyuan.issn1006-6543.20160001

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Abstract [Ca2.95Sm0.05Co3.995-xNi0.005FexO9+δ][(х＝0，0.10，0.15，0.20)]ceramic material was prepared by self propagation process using citric acid as chelating agent， nitrate and oxide as oxidant. The synthesized powders [Ca2.95Sm0.05Co3.995-xNi0.005FexO9+δ][（x＝0.10）]were compacted. The thermoelectric properties of[Ca2.95Sm0.05Co3.995-x][Ni0.005FexO9+δ]were explored from 473 K to 973 K. The results show that the compression law of [Ca2.95Sm0.05Co3.995-x][Ni0.005FexO9+δ]is in accordance with HUANG Pei-yun equation with compaction module of 1.86 MPa and nonlinear exponent of 2.074， respectively. The electrical conductivity and Seebeck coefficient of the material increase with the increase of temperature， while the thermal conductivity decreases with the temperature increasing. The[ZT]value of [Ca2.95Sm0.05Co3.995-xNi0.005FexO9+δ]sample is 0.13 at 973 K.[Ca2.95Sm0.05Co3.995-xNi0.005FexO9+δ]is promising thermoelectric material.

Key words： self-propagation process thermoelectric properties power factor

Received: 13 January 2016 Published: 28 March 2017

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	Articles by authors
	ZHONG Hong-Hai
	DAN Na
	NI Di
	MOU Hao-Han
	JIANG Yang
	YU Da-Bin

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ZHONG Hong-Hai,DAN Na,NI Di, et al. Study on thermoelectric properties of[Ca2.95Sm0.05Co3.995-xNi0.005FexO9+δ]by self-propagation process[J]. , 2017, 27(01): 1-6.

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http://edit.chinamet.cn/Jweb_fmyjgy/EN/10.13228/j.boyuan.issn1006-6543.20160001 OR http://edit.chinamet.cn/Jweb_fmyjgy/EN/Y2017/V27/I01/1

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