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- W4210372101 abstract "Abstract High-performance thermoelectric (TE) materials with great flexibility and stability are urgently needed to efficiently convert heat energy into electrical power. Recently, intrinsically crystalline, mechanically stable, and flexible inorganic TE fibers that show TE properties comparable to their bulk counterparts are of interest to researchers. Despite remarkable progress moving TE fibers towards room-temperature TE conversion, the figure-of-merit value ( ZT ) and bending stability still need enhancement. Herein, we report interfacial engineering enhanced thermoelectric properties of micro-nano polycrystalline TE fibers fabricated by thermally drawing Bi 2 Te 3 -based bulks in a glass-fiber template. The interfacial engineering effect comes from generating stress-induced oriented nanocrystals to increase electrical conductivity and producing strain-distorted interfaces to decrease thermal conductivity. The resulting fibers achieve a 40% higher ZT (~1.4 at 300 K) than their bulk counterparts and show a reversible bending radius of 50 µm, approaching the theoretical elastic limit. This fabrication strategy works for a wide range of inorganic TE materials and benefits the development of fiber-based micro-TE devices." @default.
- W4210372101 created "2022-02-08" @default.
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- W4210372101 date "2022-02-04" @default.
- W4210372101 modified "2023-10-01" @default.
- W4210372101 title "Enhanced thermoelectric properties of Bi2Te3-based micro-nano fibers via thermal drawing and interfacial engineering" @default.
- W4210372101 doi "https://doi.org/10.21203/rs.3.rs-1309115/v1" @default.
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