Work

A rapid method to extract Seebeck coefficient under a large temperature difference

Year: 2017

Type: article

Abstract: The Seebeck coefficient is one of the three important properties in thermoelectric materials. Since thermoelectric materials usually work under large temperature difference in real applications, we propose a quasi-steady state method to accurately measure the Seebeck coefficient under large temperature gradient. Compared to other methods, this method is not only highly accurate but also less time consuming. It can measure the Seebeck coefficient in both the temperature heating up and cooling down processes. In this work, a Zintl material (Mg3.15Nb0.05Sb1.5Bi0.49Te0.01) was tested to extract the Seebeck coefficient from room temperature to 573 K. Compared with a commercialized Seebeck coefficient measurement device (ZEM-3), there is ±5% difference between those from ZEM-3 and this method.

Source: Review of Scientific Instruments

DOI: 10.1063/1.4986965

Authors: Qing Zhu, Hee Seok Kim, Zhifeng Ren

Institutions: University of Houston, University of South Alabama

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, Office of Science, Solid-State Solar Thermal Energy Conversion, Massachusetts Institute of Technology

Awards: G29355420, NEW: SOLID-STATE SOLAR-THERMAL ENERGY CONVERSION CENTER (S3TEC CENTER) -- EFRC; PI - GANG CHEN, NEW: SOLID-STATE SOLAR-THERMAL ENERGY CONVERSION CENTER (S3TEC CENTER) -- EFRC; PI - GANG CHEN