Thermoelectric property of Ag-doped ZnSb/few-layer-graphene composites

Kwang Min Choi, Eunsil Lee, Jieun Ko, Jong Young Kim, Soonil Lee, Won Seon Seo, Soon Mok Choi, Kyu Hyoung Lee, Seung Joo Kimk

Research output: Contribution to journalArticle

Abstract

We have successfully synthesized the composites of Ag-doped zinc antimonide (Ag-ZnSb) and few-layergraphene (FLG) by high-energy-mechanical milling and spark plasma sintering using Ag-ZnSb ingot and FLG as raw materials. The FLG/Ag-ZnSb shows 22%-reduced lattice thermal conductivity by increased phonon boundary scattering due to embedded FLG. The electrical conductivity of the composites was decreased due to reduced carrier concentration, while the Seebeck coefficient of the composites was increased by electron donating effect of FLG. The maximum figure of merit, ZT, of 0.86 was observed at 630 K. The peak ZT temperature in the FLG/Ag-ZnSb cases (∼630 K) were higher than the pristine Ag-ZnSb compound (∼580 K) resulting in advantages for the higher temperature power generation.

Original languageEnglish
Pages (from-to)720-724
Number of pages5
JournalBulletin of the Korean Chemical Society
Volume37
Issue number5
DOIs
Publication statusPublished - 2016 May 1

Fingerprint

Graphite
Composite materials
Spark plasma sintering
Seebeck coefficient
Ingots
Power generation
Carrier concentration
Zinc
Thermal conductivity
Raw materials
Scattering
Temperature
Electrons

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Choi, K. M., Lee, E., Ko, J., Kim, J. Y., Lee, S., Seo, W. S., ... Kimk, S. J. (2016). Thermoelectric property of Ag-doped ZnSb/few-layer-graphene composites. Bulletin of the Korean Chemical Society, 37(5), 720-724. https://doi.org/10.1002/bkcs.10760
Choi, Kwang Min ; Lee, Eunsil ; Ko, Jieun ; Kim, Jong Young ; Lee, Soonil ; Seo, Won Seon ; Choi, Soon Mok ; Lee, Kyu Hyoung ; Kimk, Seung Joo. / Thermoelectric property of Ag-doped ZnSb/few-layer-graphene composites. In: Bulletin of the Korean Chemical Society. 2016 ; Vol. 37, No. 5. pp. 720-724.
@article{b8af6695ee354feb98efa10446464219,
title = "Thermoelectric property of Ag-doped ZnSb/few-layer-graphene composites",
abstract = "We have successfully synthesized the composites of Ag-doped zinc antimonide (Ag-ZnSb) and few-layergraphene (FLG) by high-energy-mechanical milling and spark plasma sintering using Ag-ZnSb ingot and FLG as raw materials. The FLG/Ag-ZnSb shows 22{\%}-reduced lattice thermal conductivity by increased phonon boundary scattering due to embedded FLG. The electrical conductivity of the composites was decreased due to reduced carrier concentration, while the Seebeck coefficient of the composites was increased by electron donating effect of FLG. The maximum figure of merit, ZT, of 0.86 was observed at 630 K. The peak ZT temperature in the FLG/Ag-ZnSb cases (∼630 K) were higher than the pristine Ag-ZnSb compound (∼580 K) resulting in advantages for the higher temperature power generation.",
author = "Choi, {Kwang Min} and Eunsil Lee and Jieun Ko and Kim, {Jong Young} and Soonil Lee and Seo, {Won Seon} and Choi, {Soon Mok} and Lee, {Kyu Hyoung} and Kimk, {Seung Joo}",
year = "2016",
month = "5",
day = "1",
doi = "10.1002/bkcs.10760",
language = "English",
volume = "37",
pages = "720--724",
journal = "Bulletin of the Korean Chemical Society",
issn = "0253-2964",
publisher = "Korean Chemical Society",
number = "5",

}

Choi, KM, Lee, E, Ko, J, Kim, JY, Lee, S, Seo, WS, Choi, SM, Lee, KH & Kimk, SJ 2016, 'Thermoelectric property of Ag-doped ZnSb/few-layer-graphene composites', Bulletin of the Korean Chemical Society, vol. 37, no. 5, pp. 720-724. https://doi.org/10.1002/bkcs.10760

Thermoelectric property of Ag-doped ZnSb/few-layer-graphene composites. / Choi, Kwang Min; Lee, Eunsil; Ko, Jieun; Kim, Jong Young; Lee, Soonil; Seo, Won Seon; Choi, Soon Mok; Lee, Kyu Hyoung; Kimk, Seung Joo.

In: Bulletin of the Korean Chemical Society, Vol. 37, No. 5, 01.05.2016, p. 720-724.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Thermoelectric property of Ag-doped ZnSb/few-layer-graphene composites

AU - Choi, Kwang Min

AU - Lee, Eunsil

AU - Ko, Jieun

AU - Kim, Jong Young

AU - Lee, Soonil

AU - Seo, Won Seon

AU - Choi, Soon Mok

AU - Lee, Kyu Hyoung

AU - Kimk, Seung Joo

PY - 2016/5/1

Y1 - 2016/5/1

N2 - We have successfully synthesized the composites of Ag-doped zinc antimonide (Ag-ZnSb) and few-layergraphene (FLG) by high-energy-mechanical milling and spark plasma sintering using Ag-ZnSb ingot and FLG as raw materials. The FLG/Ag-ZnSb shows 22%-reduced lattice thermal conductivity by increased phonon boundary scattering due to embedded FLG. The electrical conductivity of the composites was decreased due to reduced carrier concentration, while the Seebeck coefficient of the composites was increased by electron donating effect of FLG. The maximum figure of merit, ZT, of 0.86 was observed at 630 K. The peak ZT temperature in the FLG/Ag-ZnSb cases (∼630 K) were higher than the pristine Ag-ZnSb compound (∼580 K) resulting in advantages for the higher temperature power generation.

AB - We have successfully synthesized the composites of Ag-doped zinc antimonide (Ag-ZnSb) and few-layergraphene (FLG) by high-energy-mechanical milling and spark plasma sintering using Ag-ZnSb ingot and FLG as raw materials. The FLG/Ag-ZnSb shows 22%-reduced lattice thermal conductivity by increased phonon boundary scattering due to embedded FLG. The electrical conductivity of the composites was decreased due to reduced carrier concentration, while the Seebeck coefficient of the composites was increased by electron donating effect of FLG. The maximum figure of merit, ZT, of 0.86 was observed at 630 K. The peak ZT temperature in the FLG/Ag-ZnSb cases (∼630 K) were higher than the pristine Ag-ZnSb compound (∼580 K) resulting in advantages for the higher temperature power generation.

UR - http://www.scopus.com/inward/record.url?scp=84966280541&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84966280541&partnerID=8YFLogxK

U2 - 10.1002/bkcs.10760

DO - 10.1002/bkcs.10760

M3 - Article

AN - SCOPUS:84966280541

VL - 37

SP - 720

EP - 724

JO - Bulletin of the Korean Chemical Society

JF - Bulletin of the Korean Chemical Society

SN - 0253-2964

IS - 5

ER -