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

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.

SUBMITTER: Han G

PROVIDER: S-EPMC5939836 | biostudies-other | 2018 Apr

REPOSITORIES: biostudies-other

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

Han Guang G Popuri Srinivas R SR Greer Heather F HF Zhang Ruizhi R Ferre-Llin Lourdes L Bos Jan-Willem G JG Zhou Wuzong W Reece Michael J MJ Paul Douglas J DJ Knox Andrew R AR Gregory Duncan H DH

Chemical science 20180323 15

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 sig ...[more]

PMID: 29780515

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Dataset Information

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

Publications

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

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