Topotactic anion-exchange in thermoelectric nanostructured layered tin chalcogenides with reduced selenium content

Han, G. et al. (2018) Topotactic anion-exchange in thermoelectric nanostructured layered tin chalcogenides with reduced selenium content. Chemical Science, 9(15), pp. 3828-3836. (doi: 10.1039/c7sc05190e) (PMID:29780515) (PMCID:PMC5939836)

Abstract

Anion exchange has been performed with nanoplates of tin sulfide (SnS) via “soft chemical” organic-free solution syntheses to yield layered pseudo-ternary tin chalcogenides on a 10 g-scale. SnS undergoes a topotactic transformation to form a series of S-substituted tin selenide (SnSe) nano/micro-plates with tuneable chalcogenide composition. SnS0.1Se0.9 nanoplates were spark plasma sintered into phase-pure, textured, dense pellets, the ZT of which has been significantly enhanced to ≈1.16 from ≈0.74 at 923 K via microstructure texturing control. These approaches provide versatile, scalable and low-cost routes to p-type layered tin chalcogenides with controllable composition and competitive thermoelectric performance.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Knox, Professor Andrew and Ferre Llin, Dr Lourdes and Han, Dr Guang and Paul, Professor Douglas and Gregory, Professor Duncan
• Authors: Han, G., Popuri, S. R., Greer, H. F., Zhang, R., Ferre Llin, L., Bos, J.-W. G., Zhou, W., Reece, M. J., Paul, D. J., Knox, A. R., and Gregory, D. H.
• College/School: College of Science and Engineering > School of Chemistry; College of Science and Engineering > School of Engineering; College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Chemical Science
• Publisher: Royal Society of Chemistry
• ISSN: 2041-6520
• ISSN (Online): 2041-6539
• Published Online: 23 March 2018
• Copyright Holders: Copyright © 2018 The Royal Society of Chemistry
• First Published: First published in Chemical Science 9(15): 3828-3836
• Publisher Policy: Reproduced under a Creative Commons License

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
61424	1	Scalable Solar Thermoelectrics and Photovaltaics (SUNTRAP)	Andrew Knox	Engineering and Physical Sciences Research Council (EPSRC)	EP/K022156/1	ENG - ENGINEERING ELECTRONICS & NANO ENG
74831	1	EPSRC-GCRF ISF 2016 - Automated optimization of developing world wastewater treatment using the wastebot	William Sloan	Engineering and Physical Sciences Research Council (EPSRC)	EP/P510968/1	ENG - ENGINEERING INFRASTRUCTURE & ENVIR