KLI

The roles of interstitial oxygen and phase compositions on the thermoelectric properties CuCr0.85Mg0.15O2 delafossite material

Metadata Downloads
Abstract
In this work, role of phase composition and interstitial oxygen on the thermoelectric properties of CuCr0.85Mg0.15O2 materials prepared at different sintering temperatures (1273-1673 K) for short time (3 h) are reported. Interestingly, the samples sintered at 1273 K and 1673 K had the same Seebeck coefficient, despite the 1273 K sample having significantly lower conductivity, which are discussed via phase compo-sition and interstitial oxygen induced during the CuCrO2 phase formation and its related defect (V-Cu, V-Cr,...). Besides, high conductivity of the 1673 K sample originated from the low percentage of CuO phase and the appearance of Cu2O phase. Since the 1273 K and 1673 K sintered samples have almost the same percentage of delafossite and spinel phases so the 1673 K sample still remain its high Seebeck coefficient. We suggest some reaction chemical equations for elucidating the roles of interstitial oxygen on the phase composition and thermoelectric properties CuCr0.85Mg0.15O2 delafossite material. (C) 2021 Elsevier B.V. All rights reserved.
Author(s)
Dung Van HoangTu Anh Kieu LeAnh Tuan Thanh PhamHanh Kieu Thi TaNgoc Kim PhamTruong Huu NguyenHoa Thi LaiDai Cao TruongNgoc Van LeCong Thanh Huynh조성래Hongjun ParkSehwan SongSunkyun ParkTakao MoriVinh Cao TranThang Bach Phan
Issued Date
2021
Type
Article
Keyword
Copper vacanciesCuCrO2Interstitial oxygenPhase compositionThermoelectric materialsWeighted mobility
DOI
10.1016/j.jallcom.2021.158995
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9531
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_crossref_primary_10_1016_j_jallcom_2021_158995&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,The%20roles%20of%20interstitial%20oxygen%20and%20phase%20compositions%20on%20the%20thermoelectric%20properties%20CuCr0.85Mg0.15O2%20delafossite%20material&offset=0&pcAvailability=true
Publisher
JOURNAL OF ALLOYS AND COMPOUNDS
Location
스위스
Language
영어
ISSN
0925-8388
Citation Volume
867
Citation Number
1
Citation Start Page
158995
Citation End Page
158995
Appears in Collections:
Natural Science > Physics
Authorize & License
  • Authorize공개
Files in This Item:
  • There are no files associated with this item.

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.