Direct measurement of thermoelectric properties of β-MnO2 in its powder form

Thermoelectric power of nanoscale materials could be greatly enhanced than that of their bulks, but its precise measurement becomes a challenging problem. A setup designed for directly characterizing the thermoelectric properties of powder samples was constructed. As a demonstration, we measured the...

Full description

Saved in:
Bibliographic Details
Published inApplied physics letters Vol. 110; no. 2
Main Authors Shen, Shi-Peng, Chai, Yi-Sheng, Wang, Shou-Guo, Yang, Chuan-Sen, Shang, Da-Shan, Sun, Young
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 09.01.2017
Subjects
Applied physics
Manganese dioxide
Seebeck effect
Thermoelectric materials
Online AccessGet full text
ISSN0003-6951
1077-3118
DOI10.1063/1.4973630

Cover

More Information
Summary:Thermoelectric power of nanoscale materials could be greatly enhanced than that of their bulks, but its precise measurement becomes a challenging problem. A setup designed for directly characterizing the thermoelectric properties of powder samples was constructed. As a demonstration, we measured the thermoelectric potential of β-MnO2 sample in different powder forms around room temperature. The β-MnO2 powder ground in the air has a much larger thermopower than that in the as-bought sample or powder ground in the dry Ar atmosphere. It was concluded that the Seebeck coefficient of β-MnO2 powder can be greatly affected in the air due to a possible electrochemical reaction with H2O vapor.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4973630