Effect of Manganese Dioxide Nanorods on the Thermoelectric Properties of Cement Composites

doi:10.1061/(ASCE)MT.1943-5533.0002401

CORC > 海洋研究所 > 中国科学院海洋研究所

	Effect of Manganese Dioxide Nanorods on the Thermoelectric Properties of Cement Composites
	Ji, Tao 2,3; Zhang, Xiaoying 1; Zhang, Xiong 3; Zhang, Yongjuan 3; Li, Weihua 1,3
刊名	JOURNAL OF MATERIALS IN CIVIL ENGINEERING
	2018-09-01
卷号	30 期号:9 页码:8
关键词	MnO2 nanorods Seebeck coefficient Cement composites Thermoelectric effect Density of electronic state
ISSN号	0899-1561
DOI	10.1061/(ASCE)MT.1943-5533.0002401
通讯作者	Li, Weihua(liweihua@qdio.ac.cn)
英文摘要	The Seebeck coefficient of plain cement paste is usually less than 1V/degrees C. To enhance the thermoelectric performance of cement composites, a kind of MnO2 powder was synthesized and used as a thermoelectric component in this work. The synthesized MnO2 powder was proven to be a kind of effective thermoelectric component in cement paste. The synthesized MnO2 powder possesses a nanorod structure with a diameter of about 50nm and a length up to 1.4m. The measured Seebeck coefficient of the compacted MnO2 powders was about -5,490V/degrees C. The nanorod structured design was proven to be an effective method to increase the Seebeck coefficient of the thermoelectric component in this research. Then the MnO2 nanorods were incorporated into the cement matrix to enhance the thermoelectric effect of cement composites. A relatively high Seebeck coefficient of about -3,085V/degrees C could be obtained when the content of MnO2 powder was 5.0% by weight of cement, which is more than 1,000 times higher than that of the cement paste without MnO2 powder. And at this content, the electrical conductivity, thermal conductivity, and ZT of cement composites were 1.88x10-4S/m, 0.72W/mK, and 7.596x10-7, respectively. The thermoelectric effect of the cement composites is enhanced mainly due to the enhanced Seebeck coefficient, while the influence of electrical conductivity and thermal conductivity caused by MnO2 powders is not as obvious as Seebeck coefficient.
资助项目	National Science Foundation of China[51378391] ; National Science Foundation of China[51525903] ; National Key Projects of China[2016YFC0700800] ; Shandong Provincial Key Research and Development Plan[2017GHY15118] ; Nantong Science and Technology Plan[GY12016046]
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000439543900015
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/163455]
专题	中国科学院海洋研究所
通讯作者	Li, Weihua
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.China Construct Eighth Engn Div Co Ltd, 1568 Century Ave, Shanghai 200122, Peoples R China 3.Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China
推荐引用方式 GB/T 7714	Ji, Tao,Zhang, Xiaoying,Zhang, Xiong,et al. Effect of Manganese Dioxide Nanorods on the Thermoelectric Properties of Cement Composites[J]. JOURNAL OF MATERIALS IN CIVIL ENGINEERING,2018,30(9):8.
APA	Ji, Tao,Zhang, Xiaoying,Zhang, Xiong,Zhang, Yongjuan,&Li, Weihua.(2018).Effect of Manganese Dioxide Nanorods on the Thermoelectric Properties of Cement Composites.JOURNAL OF MATERIALS IN CIVIL ENGINEERING,30(9),8.
MLA	Ji, Tao,et al."Effect of Manganese Dioxide Nanorods on the Thermoelectric Properties of Cement Composites".JOURNAL OF MATERIALS IN CIVIL ENGINEERING 30.9(2018):8.