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journal article·2024-05-01Open access

Sustainable thermoelectric materials: Utilizing Fukushima weathered biotite via molten salt treatment

Mitsunori Honda, Yui Kaneta, Masakazu Muraguchi, Kosetsu Hayakawa, Masato Oda, Chiaki Iino, Hiroyuki Ishii, Takuya Goto

AIP Advances· Volume 14· Issue 5
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Source abstract

Abstract

This study examines the utilization of Fukushima weathered biotite (WB) as an alternative to conventional thermoelectric materials traditionally derived from rare and toxic substances. WB underwent milling, classification, and subsequent heat treatment via molten-salt treatment to produce crystals exhibiting conductivity akin to semiconductors within the 650–850 °C range. Evaluation of WB and the derived crystal’s electrical conductivity and Seebeck coefficient showcased their viability for high-temperature thermoelectric applications. Consequently, WB attained a dimensionless figure of merit (ZT) of 0.015, signaling its potential as a thermoelectric material that surpasses 650 °C.
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Research context

Electronic materialsMaterials processing

OpenAlex topics: Advanced Thermoelectric Materials and Devices · Thermal Radiation and Cooling Technologies · Thermal properties of materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Materials Sciences Research Center (MSRC), Japan Atomic Energy Agency (JAEA) 1 , 2-4, Shirakata, Tokai-mura, Naka-gun, Tokai, Ibaraki 319-1195, Japan

Department of Chemical Science and Engineering, Graduate School of Science and Engineering 2 , , Kobe 657-8501, Japan

Kobe University 2 , , Kobe 657-8501, Japan

Faculty of Engineering, Hokkaido University of Science 3 , Sapporo, Hokkaido 006-8585, Japan

Department of Materials Science, Wakayama University 4 , Wakayama 640-8510, Japan

Department of Applied Physics, Faculty of Pure and Applied Sciences 5 , University of Tsukuba,1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan

Department of Science of Environment and Mathematical Modeling, Graduate School of Science and Engineering, Doshisha University 6 , Kyotanabe, Kyoto 610-0394, Japan

Funding

Japan Society for the Promotion of Science

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