Electrical transport properties of Cu2Se dispersed and Na-doped Bi2Ba2Co2Oy thermoelectric composites

DOI

10.2991/iceesd-18.2018.319How to use a DOI?

Keywords

Bi2Ba2Co2Oy ceramics; Cu2Se dispersant; Na-doping; electrical transport properties.

Abstract

The Cu2-xSe nanopowder was synthesized by the hydrothermal method. The electrical transport properties of Bi1.975Na0.025Ba2Co2Oy + xwt% Cu2Se (x = 0.00, 0.25, 0.50, 0.75, 1.00, 1.25, and 1.50) ceramic samples prepared by the solid-state reaction method were investigated from 300 K to 898 K. The Cu2-xSe dispersant with an appropriate amount played an important role in reducing resistivity. Although the Seebeck coefficients decreased slightly, the power factors of the doped samples got a significant improvement. Ultimately, the Bi1.975Na0.025Ba2Co2Oy + 0.25wt% Cu2Se sample exhibited a better power factors (PF) of 191.8 (10-6W-1mK-2) at 898 K, which was improved by 31% compared with the un-doped Bi2Ba2Co2Oy sample.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Senlin Leng
AU  - Wei Shi
AU  - Hongzhang Song
PY  - 2018/05
DA  - 2018/05
TI  - Electrical transport properties of Cu2Se dispersed and Na-doped Bi2Ba2Co2Oy thermoelectric composites
BT  - Proceedings of the 2018 7th International Conference on Energy, Environment and Sustainable Development (ICEESD 2018)
PB  - Atlantis Press
SP  - 1772
EP  - 1776
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-18.2018.319
DO  - 10.2991/iceesd-18.2018.319
ID  - Leng2018/05
ER  -