Transferable, highly crystalline covellite membrane for multifunctional thermoelectric systems

Abstract Emerging freestanding membrane technologies, especially using inorganic thermoelectric materials, demonstrate the potential for advanced thermoelectric platforms. However, using rare and toxic elements during material processing must be circumvented. Herein, we present a scalable method for synthesizing highly crystalline CuS membranes for thermoelectric applications. By sulfurizing crystalline Cu, we produce a highly percolated and easily transferable network of submicron CuS rods. The CuS membrane effectively separates thermal and electrical properties to achieve a power factor of 0.50 mW m −1 K −2 and thermal conductivity of 0.37 W m −1 K −1 at 650 K (estimated value). This yields a record‐high dimensionless figure‐of‐merit of 0.91 at 650 K (estimated value) for covellite. Moreover, integrating 12 CuS devices into a module resulted in a power generation of ~4 μW at Δ T of 40 K despite using a straightforward configuration with only p‐type CuS. Furthermore, based on the temperature‐dependent electrical characteristics of CuS, we develop a wearable temperature sensor with antibacterial properties. image

Authors

Institutions

Publication Details

Journal
InfoMat
Published
2024-10-16
DOI
https://doi.org/10.1002/inf2.12626
Citations
11
Primary Topic
Advanced Thermoelectric Materials and Devices
Type
article
Field-Weighted Citation Impact
1.29

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Transferable, highly crystalline covellite membrane for multifunctional thermoelectric systems

Seonggwang Yoo, Min‐Wook Oh, Seokwoo Jeon, Donghwi Cho et al.
11 citations
InfoMat
Advanced Thermoelectric Materials and Devices
1.29
article

Transferable, highly crystalline covellite membrane for multifunctional thermoelectric systems

Seonggwang Yoo, Min‐Wook Oh, Seokwoo Jeon, Donghwi Cho, Jin‐Hoon Yang, Hanhwi Jang, Hosun Shin, Myungwoo Choi, Yong Suk Oh, A‐Rang Jang, Geonhee Lee, Hyeonseok Han, MinSoung Kang, Yea‐Lee Lee, Jeong‐O Lee, Inkyu Park, Hye Jeong Lee
article en
11 citations

Abstract

Abstract Emerging freestanding membrane technologies, especially using inorganic thermoelectric materials, demonstrate the potential for advanced thermoelectric platforms. However, using rare and toxic elements during material processing must be circumvented. Herein, we present a scalable method for synthesizing highly crystalline CuS membranes for thermoelectric applications. By sulfurizing crystalline Cu, we produce a highly percolated and easily transferable network of submicron CuS rods. The CuS membrane effectively separates thermal and electrical properties to achieve a power factor of 0.50 mW m −1 K −2 and thermal conductivity of 0.37 W m −1 K −1 at 650 K (estimated value). This yields a record‐high dimensionless figure‐of‐merit of 0.91 at 650 K (estimated value) for covellite. Moreover, integrating 12 CuS devices into a module resulted in a power generation of ~4 μW at Δ T of 40 K despite using a straightforward configuration with only p‐type CuS. Furthermore, based on the temperature‐dependent electrical characteristics of CuS, we develop a wearable temperature sensor with antibacterial properties. image

InfoMatVol. 6(11)
Northwestern University (US), Hanbat National University (KR), Korea Advanced Institute of Science and Technology (KR), Changwon National University (KR), Korea University (KR), Kongju National University (KR), Korea Research Institute of Standards and Science (KR), Korea Research Institute of Chemical Technology (KR), Korea University of Science and Technology (KR)
National Research Foundation, Korea Research Institute of Chemical Technology, National Research Foundation of Korea, Ministry of Science and ICT, South Korea, Korea Institute of Energy Technology Evaluation and Planning
Affordable and clean energy
Openalex Percentile: Top 16%
Advanced Thermoelectric Materials and Devices
1.29
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.