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Promoting thermoelectric technology to mitigate global climate change
We recently reported all-inorganic inks using BiSbTe-based thermoelectric particles coupled with a chalcogenidometallate (ChaM) inorganic binder. In the current study, we analyzed the rheological behavior of the all-inorganic inks to assess printability and 3D structural retention with respect to the ChaM content. It is well known that an incorporation of organic binders such as cellulose acetate and poly(vinylidene fluoride) significantly enhances the viscoelasticity and corresponding extrudability of the colloidal inks, but such organics inevitably degrade the final performance of the printed objects due to the intrinsic limitation of electrical conductivity. We showed that using Sb2Te3 chalcogenidometallate (ChaM) ions as inorganic binder minimized the deterioration of the ultimate TE performance and improved the ink printability including extrusion behavior and shape retention of the 3D structure.
ICT2019_poster_session_Fredrick_Kim.pdf
