Effect of cold pressure on thermoelectric properties of microwave sintered Cu2Se

Yongxia Li; Chunxin Pei; Wenhongxin Li; Fajun Yi

doi:10.1016/j.ceramint.2026.03.190

Effect of cold pressure on thermoelectric properties of microwave sintered Cu₂Se

Yongxia Li^*
, Chunxin Pei
, Wenhongxin Li
, Fajun Yi

^*Corresponding author for this work

School of Astronautics

Harbin Engineering University

Research output: Contribution to journal › Article › peer-review

Abstract

AbstractCu₂Se powders were synthesized by Cu powders and Se powders with a stoichiometric ratio. Following cold pressing at 180 MPa and 150 MPa, Cu₂Se samples were sintered by microwave sintering (WS), denoted as sample 1D and sample 2P, respectively. Sample 1D exhibits a dense layered microstructure, while sample 2P presents a layered microstructure with dispersed micron-sized pores. The existence of micron-sized pores significantly enhances phonon scattering and optimizes carrier properties of Cu₂Se sample. Therefore, the ZT value of sample 2P was 2.5 times that of sample 1D at 798 K.

Original language	English
Journal	Ceramics International
DOIs	https://doi.org/10.1016/j.ceramint.2026.03.190
State	Accepted/In press - 2026

Keywords

Electrical properties
Microstructure-final
Sintering
Thermal conductivity

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@article{941650c3a701454b865ae563a8e7d5cd,

title = "Effect of cold pressure on thermoelectric properties of microwave sintered Cu2Se",

abstract = "AbstractCu2Se powders were synthesized by Cu powders and Se powders with a stoichiometric ratio. Following cold pressing at 180 MPa and 150 MPa, Cu2Se samples were sintered by microwave sintering (WS), denoted as sample 1D and sample 2P, respectively. Sample 1D exhibits a dense layered microstructure, while sample 2P presents a layered microstructure with dispersed micron-sized pores. The existence of micron-sized pores significantly enhances phonon scattering and optimizes carrier properties of Cu2Se sample. Therefore, the ZT value of sample 2P was 2.5 times that of sample 1D at 798 K.",

keywords = "Electrical properties, Microstructure-final, Sintering, Thermal conductivity",

author = "Yongxia Li and Chunxin Pei and Wenhongxin Li and Fajun Yi",

note = "Publisher Copyright: {\textcopyright} 2026 Elsevier Ltd and Techna Group S.r.l. All rights are reserved, including those for text and data mining, AI training, and similar technologies.",

year = "2026",

doi = "10.1016/j.ceramint.2026.03.190",

language = "英语",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Effect of cold pressure on thermoelectric properties of microwave sintered Cu2Se

AU - Li, Yongxia

AU - Pei, Chunxin

AU - Li, Wenhongxin

AU - Yi, Fajun

PY - 2026

Y1 - 2026

N2 - AbstractCu2Se powders were synthesized by Cu powders and Se powders with a stoichiometric ratio. Following cold pressing at 180 MPa and 150 MPa, Cu2Se samples were sintered by microwave sintering (WS), denoted as sample 1D and sample 2P, respectively. Sample 1D exhibits a dense layered microstructure, while sample 2P presents a layered microstructure with dispersed micron-sized pores. The existence of micron-sized pores significantly enhances phonon scattering and optimizes carrier properties of Cu2Se sample. Therefore, the ZT value of sample 2P was 2.5 times that of sample 1D at 798 K.

AB - AbstractCu2Se powders were synthesized by Cu powders and Se powders with a stoichiometric ratio. Following cold pressing at 180 MPa and 150 MPa, Cu2Se samples were sintered by microwave sintering (WS), denoted as sample 1D and sample 2P, respectively. Sample 1D exhibits a dense layered microstructure, while sample 2P presents a layered microstructure with dispersed micron-sized pores. The existence of micron-sized pores significantly enhances phonon scattering and optimizes carrier properties of Cu2Se sample. Therefore, the ZT value of sample 2P was 2.5 times that of sample 1D at 798 K.

KW - Electrical properties

KW - Microstructure-final

KW - Sintering

KW - Thermal conductivity

UR - https://www.scopus.com/pages/publications/105034665423

U2 - 10.1016/j.ceramint.2026.03.190

DO - 10.1016/j.ceramint.2026.03.190

M3 - 文章

AN - SCOPUS:105034665423

SN - 0272-8842

JO - Ceramics International

JF - Ceramics International

ER -

Effect of cold pressure on thermoelectric properties of microwave sintered Cu₂Se

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