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Chang C, Liu Y, Ho Lee S, Chiara Spadaro M, Koskela KM, Kleinhanns T, Costanzo T, Arbiol J, Brutchey RL, Ibáñez M. Surface Functionalization of Surfactant-Free Particles: A Strategy to Tailor the Properties of Nanocomposites for Enhanced Thermoelectric Performance. Angew Chem Int Ed Engl 2022; 61:e202207002. [PMID: 35799379 PMCID: PMC9542085 DOI: 10.1002/anie.202207002] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Indexed: 11/06/2022]
Abstract
The broad implementation of thermoelectricity requires high-performance and low-cost materials. One possibility is employing surfactant-free solution synthesis to produce nanopowders. We propose the strategy of functionalizing "naked" particles' surface by inorganic molecules to control the nanostructure and, consequently, thermoelectric performance. In particular, we use bismuth thiolates to functionalize surfactant-free SnTe particles' surfaces. Upon thermal processing, bismuth thiolates decomposition renders SnTe-Bi2 S3 nanocomposites with synergistic functions: 1) carrier concentration optimization by Bi doping; 2) Seebeck coefficient enhancement and bipolar effect suppression by energy filtering; and 3) lattice thermal conductivity reduction by small grain domains, grain boundaries and nanostructuration. Overall, the SnTe-Bi2 S3 nanocomposites exhibit peak z T up to 1.3 at 873 K and an average z T of ≈0.6 at 300-873 K, which is among the highest reported for solution-processed SnTe.
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Affiliation(s)
- Cheng Chang
- Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
| | - Yu Liu
- Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
| | - Seung Ho Lee
- Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
| | - Maria Chiara Spadaro
- Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
| | - Kristopher M Koskela
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Tobias Kleinhanns
- Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
| | - Tommaso Costanzo
- Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
| | - Jordi Arbiol
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and BIST, 08193, Barcelona, Catalonia, Spain.,ICREA, Pg. Lluís Companys 23, 08010, Barcelona, Catalonia, Spain
| | - Richard L Brutchey
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Maria Ibáñez
- Institute of Science and Technology Austria, Am Campus 1, 3400, Klosterneuburg, Austria
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Chang C, Liu Y, Ho Lee S, Chiara Spadaro M, Koskela KM, Kleinhanns T, Costanzo T, Arbiol J, Brutchey RL, Ibáñez M. Surface Functionalization of Surfactant-Free Particles: A Strategy to Tailor the Properties of Nanocomposites for Enhanced Thermoelectric Performance. Angew Chem Weinheim Bergstr Ger 2022; 134:e202207002. [PMID: 38505739 PMCID: PMC10947131 DOI: 10.1002/ange.202207002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Indexed: 11/07/2022]
Abstract
The broad implementation of thermoelectricity requires high-performance and low-cost materials. One possibility is employing surfactant-free solution synthesis to produce nanopowders. We propose the strategy of functionalizing "naked" particles' surface by inorganic molecules to control the nanostructure and, consequently, thermoelectric performance. In particular, we use bismuth thiolates to functionalize surfactant-free SnTe particles' surfaces. Upon thermal processing, bismuth thiolates decomposition renders SnTe-Bi2S3 nanocomposites with synergistic functions: 1) carrier concentration optimization by Bi doping; 2) Seebeck coefficient enhancement and bipolar effect suppression by energy filtering; and 3) lattice thermal conductivity reduction by small grain domains, grain boundaries and nanostructuration. Overall, the SnTe-Bi2S3 nanocomposites exhibit peak z T up to 1.3 at 873 K and an average z T of ≈0.6 at 300-873 K, which is among the highest reported for solution-processed SnTe.
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Affiliation(s)
- Cheng Chang
- Institute of Science and Technology AustriaAm Campus 13400KlosterneuburgAustria
| | - Yu Liu
- Institute of Science and Technology AustriaAm Campus 13400KlosterneuburgAustria
| | - Seung Ho Lee
- Institute of Science and Technology AustriaAm Campus 13400KlosterneuburgAustria
| | | | | | - Tobias Kleinhanns
- Institute of Science and Technology AustriaAm Campus 13400KlosterneuburgAustria
| | - Tommaso Costanzo
- Institute of Science and Technology AustriaAm Campus 13400KlosterneuburgAustria
| | - Jordi Arbiol
- Catalan Institute of Nanoscience and Nanotechnology (ICN2)CSIC, and BIST08193Barcelona, CataloniaSpain
- ICREAPg. Lluís Companys 2308010Barcelona, CataloniaSpain
| | - Richard L. Brutchey
- Department of ChemistryUniversity of Southern CaliforniaLos AngelesCA 90089USA
| | - Maria Ibáñez
- Institute of Science and Technology AustriaAm Campus 13400KlosterneuburgAustria
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