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Chen C, Ying P, Wang B, Li P, Shen T, Xu J, Wang D, Song A, Xu B, Tian Y. Rapid Synthesis of Sb 2Si 2Te 6 under High Pressure with a Modulated Microstructure. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39329466 DOI: 10.1021/acsami.4c12903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/28/2024]
Abstract
Over the past decades, thermoelectric materials have advanced significantly, yet materials such as Sb2Si2Te6, which are challenging to synthesize chemically, often require lengthy and complex preparation processes, hindering their development. In this work, we prepare polycrystalline Sb2Si2Te6 bulk from elemental precursors using a high-pressure synthesis (HPS) method. This method offers significant advantages in efficiency and preparation duration. The applied pressure promotes an isotropic microstructure and regulates the thermoelectric properties by controlling precipitate contents, grain size, and twinning. Although an increase in thermal conductivity, mostly due to the notable increase in electrical conductivity, leads to less favorable thermal conductivity near room temperature compared to samples prepared using conventional methods, a beneficial reversal occurs at high temperatures. The polycrystalline Sb2Si2Te6 sample synthesized at 2 GPa demonstrates a peak ZT value of 1.1 at 773 K, outperforming most pristine Sb2Si2Te6 materials. This work demonstrates an efficient strategy for optimizing Sb2Si2Te6 performance and offers a new synthesis pathway for other challenging thermoelectric materials.
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Affiliation(s)
- Chen Chen
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Pan Ying
- National Key Laboratory of Advanced Casting Technologies, MIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology, Engineering Research Center of Materials Behavior and Design, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Binhao Wang
- Zhengzhou Abrasive Grinding Research Institute Co., Ltd., State Key Laboratory for High Performance Tools, Zhengzhou 450002, China
| | - Penghui Li
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China
- Center for X-mechanics, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
| | - Tao Shen
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Jun Xu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Dan Wang
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Aihua Song
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Bo Xu
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China
| | - Yongjun Tian
- Center for High Pressure Science (CHiPS), State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004, China
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2
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Kimberly TQ, Wang EYC, Navarro GD, Qi X, Ciesielski KM, Toberer ES, Kauzlarich SM. Into the Void: Single Nanopore in Colloidally Synthesized Bi 2Te 3 Nanoplates with Ultralow Lattice Thermal Conductivity. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:6618-6626. [PMID: 39005532 PMCID: PMC11238327 DOI: 10.1021/acs.chemmater.4c01092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 06/17/2024] [Accepted: 06/18/2024] [Indexed: 07/16/2024]
Abstract
Bi2Te3 is a well-known thermoelectric material that was first investigated in the 1960s, optimized over decades, and is now one of the highest performing room-temperature thermoelectric materials to-date. Herein, we report on the colloidal synthesis, growth mechanism, and thermoelectric properties of Bi2Te3 nanoplates with a single nanopore in the center. Analysis of the reaction products during the colloidal synthesis reveals that the reaction progresses via a two-step nucleation and epitaxial growth: first of elemental Te nanorods and then the binary Bi2Te3 nanoplate growth. The rates of epitaxial growth can be controlled during the reaction, thus allowing the formation of a single nanopore in the center of the Bi2Te3 nanoplates. The size of the nanopore can be controlled by changing the pH of the reaction solution, where larger pores with diameter of ∼50 nm are formed at higher pH and smaller pores with diameter of ∼16 nm are formed at lower pH. We propose that the formation of the single nanopore is mediated by the Kirkendall effect and thus the reaction conditions allow for the selective control over pore size. Nanoplates have well-defined hexagonal facets as seen in the scanning and transmission electron microscopy images. The single nanopores have a thin amorphous layer at the edge, revealed by transmission electron microscopy. Thermoelectric properties of the pristine and single-nanopore Bi2Te3 nanoplates were measured in the parallel and perpendicular directions. These properties reveal strong anisotropy with a significant reduction to thermal conductivity and increased electrical resistivity in the perpendicular direction due to the higher number of nanoplate and nanopore interfaces. Furthermore, Bi2Te3 nanoplates with a single nanopore exhibit ultralow lattice thermal conductivity values, reaching ∼0.21 Wm-1K-1 in the perpendicular direction. The lattice thermal conductivity was found to be systematically lowered with pore size, allowing for the realization of a thermoelectric figure of merit, zT of 0.75 at 425 K for the largest pore size.
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Affiliation(s)
- Tanner Q Kimberly
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Evan Y C Wang
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Gustavo D Navarro
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Xiao Qi
- The Molecular Foundry, Lawrence Berkeley National Lab, Berkeley, California 94720, United States
| | - Kamil M Ciesielski
- Department of Physics, Colorado School of Mines, 1523 Illinois Street, Golden, Colorado 80401, United States
| | - Eric S Toberer
- Department of Physics, Colorado School of Mines, 1523 Illinois Street, Golden, Colorado 80401, United States
| | - Susan M Kauzlarich
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
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3
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Yang S, Ming H, Zhu C, Wang Z, Xin H, Ge Z, Li D, Zhang J, Qin X. High Thermoelectric Performance of n-type BiTeSe-Based Composites Incorporated with Both Inorganic and Organic Nanoinclusions. ACS APPLIED MATERIALS & INTERFACES 2024; 16:16732-16743. [PMID: 38506353 DOI: 10.1021/acsami.4c02032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
N-type Bi2Te2.7Se0.3 (BTS) alloy has relatively low thermoelectric performance as compared to its p-type counterpart, which restricts its widespread applications. Herein, we designed and prepared a novel composite system, which consists of an n-type BTS matrix incorporated with both inorganic and organic nanoinclusions. The results indicate that the thermopower of the composite samples can be enhanced by more than 19% upon incorporating inorganic nanophase AgBi3S5 (ABS) due to the energy-dependent carrier scattering, which ensures a high power factor. On the other hand, further incorporation of organic nanophase polypyrrole (PPy) can drastically reduce its lattice thermal conductivity owing to the strong scattering of mid- and low-frequency phonons at these nanoinclusions. As a result, high figures of merit ZTmax = 1.3 at 348 K and ZTave = 1.17 (300-500 K) are achieved with improved mechanical properties in BTS-based composites incorporated with 1.5 wt % ABS and 0.5 wt % PPy, demonstrating that the incorporation of both inorganic and organic nanoinclusions is an effective way to improve its thermoelectric performance.
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Affiliation(s)
- Shuhuan Yang
- Key Lab of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Hongwei Ming
- Key Lab of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Chen Zhu
- Key Lab of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Ziyuan Wang
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China
| | - Hongxing Xin
- Key Lab of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Zhenhua Ge
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, P. R. China
| | - Di Li
- Key Lab of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Jian Zhang
- Key Lab of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
| | - Xiaoying Qin
- Key Lab of Photovoltaic and Energy Conservation Materials, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China
- University of Science and Technology of China, Hefei 230026, P. R. China
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Vinodhini J, Shalini V, Harish S, Ikeda H, Archana J, Navaneethan M. Solvent-assisted synthesis of Ag 2Se and Ag 2S nanoparticles on carbon fabric for enhanced thermoelectric performance. J Colloid Interface Sci 2023; 651:436-447. [PMID: 37556902 DOI: 10.1016/j.jcis.2023.07.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 07/03/2023] [Accepted: 07/14/2023] [Indexed: 08/11/2023]
Abstract
The challenge of developing low-cost, highly flexible, and high-performance thermoelectric (TE) materials persists due to the low thermoelectric efficiency of conducting polymers and the inflexibility of inorganic materials. In this study, we successfully integrated Ag2Se and Ag2S with highly conductive carbon fabric (CF) to produce a flexible thermoelectric material. A facile one-step solvothermal method was employed to synthesize the Ag2Se-CF and Ag2S-CF, which were then subjected to X-ray analysis to confine the phase formation of Ag2Se and Ag2S on the carbon fabric. The analysis revealed that Ag2Se and Ag2S nanoparticles were tightly packed on the surface of carbon fabric, and compositional analysis confirmed the interaction between the material and carbon fabric. The thermoelectric properties of Ag2Se-CF and Ag2S-CF were significantly altered due to carrier concentration and mobility variations, resulting in a low power factor of 6.7 μW/mK2 for Ag2Se-CF and a high-power factor of 24 μW/mK2 at 373 K for Ag2S-CF. The growth of Ag2Se-CF and Ag2S-CF on carbon fabric led to an enhancement in their thermoelectric properties. Further, TE legs were fabricated using the Ag2Se-CF (p-type) and Ag2S-CF (n-type), and the fabricated legs exhibited an output voltage of ∼20 mV to ∼86.65 mV at a temperature gradient (ΔT) of 3-8 K. This work represents a cutting-edge approach to the fabrication of high-performance, wearable thermoelectric devices.
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Affiliation(s)
- J Vinodhini
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India
| | - V Shalini
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India
| | - S Harish
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India; Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan
| | - H Ikeda
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan; Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu, Shizuoka 432-8011, Japan
| | - J Archana
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India
| | - M Navaneethan
- Functional Materials and Energy Devices Laboratory, Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India; Nanotechnology Research Center, SRM Institute of Science and Technology, Kattankulathur, Chennai 603203, Tamil Nadu, India.
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5
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Guan QL, Dong LQ, Hao Q. Improved Thermoelectric Performance of Sb 2Te 3 Nanosheets by Coating Pt Particles in Wide Medium-Temperature Zone. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6961. [PMID: 37959558 PMCID: PMC10647828 DOI: 10.3390/ma16216961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 10/22/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023]
Abstract
The p-type Sb2Te3 alloy, a binary compound belonging to the V2VI3-based materials, has been widely used as a commercial material in the room-temperature zone. However, its low thermoelectric performance hinders its application in the low-medium temperature range. In this study, we prepared Sb2Te3 nanosheets coated with nanometer-sized Pt particles using a combination of solvothermal and photo-reduction methods. Our findings demonstrate that despite the adverse effects on certain properties, the addition of Pt particles to Sb2Te3 significantly improves the thermoelectric properties, primarily due to the enhanced electronic conductivity. The optimal ZT value reached 1.67 at 573 K for Sb2Te3 coated with 0.2 wt% Pt particles, and it remained above 1.0 within the temperature range of 333-573 K. These values represent a 47% and 49% increase, respectively, compared to the pure Sb2Te3 matrix. This enhancement in thermoelectric performance can be attributed to the presence of Pt metal particles, which effectively enhance carrier and phonon transport properties. Additionally, we conducted a Density Functional Theory (DFT) study to gain further insights into the underlying mechanisms. The results revealed that Sb2Te3 doped with Pt exhibited a doping level in the band structure, and a sharp rise in the Density of States (DOS) was observed. This sharp rise can be attributed to the presence of Pt atoms, which lead to enhanced electronic conductivity. In conclusion, our findings demonstrate that the incorporation of nanometer-sized Pt particles effectively improves the carrier and phonon transport properties of the Sb2Te3 alloy. This makes it a promising candidate for medium-temperature thermoelectric applications, as evidenced by the significant enhancement in thermoelectric performance achieved in this study.
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Affiliation(s)
- Qing-Ling Guan
- Beijing Institute of Technology, School of Optics & Photonics, Beijing Key Laboratory Precise Optoelectronics Measurement Institute, Beijing 100081, China; (Q.-L.G.); (Q.H.)
- Beijing Institute of Technology, Yangtze Delta Region Academy, Jiaxing 314019, China
| | - Li-Quan Dong
- Beijing Institute of Technology, School of Optics & Photonics, Beijing Key Laboratory Precise Optoelectronics Measurement Institute, Beijing 100081, China; (Q.-L.G.); (Q.H.)
- Beijing Institute of Technology, Yangtze Delta Region Academy, Jiaxing 314019, China
| | - Qun Hao
- Beijing Institute of Technology, School of Optics & Photonics, Beijing Key Laboratory Precise Optoelectronics Measurement Institute, Beijing 100081, China; (Q.-L.G.); (Q.H.)
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6
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van Ginkel HJ, Mitterhuber L, van de Putte MW, Huijben M, Vollebregt S, Zhang G. Nanostructured Thermoelectric Films Synthesised by Spark Ablation and Their Oxidation Behaviour. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13111778. [PMID: 37299681 DOI: 10.3390/nano13111778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 05/27/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023]
Abstract
Reducing the thermal conductivity of thermoelectric materials has been a field of intense research to improve the efficiency of thermoelectric devices. One approach is to create a nanostructured thermoelectric material that has a low thermal conductivity due to its high number of grain boundaries or voids, which scatter phonons. Here, we present a new method based on spark ablation nanoparticle generation to create nanostructured thermoelectric materials, demonstrated using Bi2Te3. The lowest achieved thermal conductivity was <0.1 W m-1 K-1 at room temperature with a mean nanoparticle size of 8±2 nm and a porosity of 44%. This is comparable to the best published nanostructured Bi2Te3 films. Oxidation is also shown to be a major issue for nanoporous materials such as the one here, illustrating the importance of immediate, air-tight packaging of such materials after synthesis and deposition.
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Affiliation(s)
- Hendrik Joost van Ginkel
- Department of Microelectronics, Faculty of Electrical Engineering, Mathematics and Computer Science, Delft University of Technology, 2628 CD Delft, The Netherlands
| | | | | | - Mark Huijben
- MESA+ Institute for Nanotechnology, University of Twente, 7522 NH Enschede, The Netherlands
| | - Sten Vollebregt
- Department of Microelectronics, Faculty of Electrical Engineering, Mathematics and Computer Science, Delft University of Technology, 2628 CD Delft, The Netherlands
| | - Guoqi Zhang
- Department of Microelectronics, Faculty of Electrical Engineering, Mathematics and Computer Science, Delft University of Technology, 2628 CD Delft, The Netherlands
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7
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Wang Y, Hong M, Venezuela J, Liu T, Dargusch M. Expedient secondary functions of flexible piezoelectrics for biomedical energy harvesting. Bioact Mater 2023; 22:291-311. [PMID: 36263099 PMCID: PMC9556936 DOI: 10.1016/j.bioactmat.2022.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/01/2022] [Accepted: 10/03/2022] [Indexed: 11/22/2022] Open
Abstract
Flexible piezoelectrics realise the conversion between mechanical movements and electrical power by conformally attaching onto curvilinear surfaces, which are promising for energy harvesting of biomedical devices due to their sustainable body movements and/or deformations. Developing secondary functions of flexible piezoelectric energy harvesters is becoming increasingly significant in recent years via aiming at issues that cannot be addressed or mitigated by merely increasing piezoelectric efficiencies. These issues include loose interfacial contact and pucker generation by stretching, power shortage or instability induced by inadequate mechanical energy, and premature function degeneration or failure caused by fatigue fracture after cyclic deformations. Herein, the expedient secondary functions of flexible piezoelectrics to mitigate above issues are reviewed, including stretchability, hybrid energy harvesting, and self-healing. Efforts have been devoted to understanding the state-of-the-art strategies and their mechanisms of achieving secondary functions based on piezoelectric fundamentals. The link between structural characteristic and function performance is unravelled by providing insights into carefully selected progresses. The remaining challenges of developing secondary functions are proposed in the end with corresponding outlooks. The current work hopes to help and inspire future research in this promising field focusing on developing the secondary functions of flexible piezoelectric energy harvesters.
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Affiliation(s)
- Yuan Wang
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Min Hong
- Centre for Future Materials, University of Southern Queensland, Springfield, Queensland, 4300, Australia
| | - Jeffrey Venezuela
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Ting Liu
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Matthew Dargusch
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane, Queensland, 4072, Australia
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8
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Lee S, Jung SJ, Park GM, Na MY, Kim KC, Hong J, Lee AS, Baek SH, Kim H, Park TJ, Kim JS, Kim SK. Selective Dissolution-Derived Nanoporous Design of Impurity-Free Bi 2 Te 3 Alloys with High Thermoelectric Performance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205202. [PMID: 36634999 DOI: 10.1002/smll.202205202] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 12/10/2022] [Indexed: 06/17/2023]
Abstract
Thermoelectric technology, which has been receiving attention as a sustainable energy source, has limited applications because of its relatively low conversion efficiency. To broaden their application scope, thermoelectric materials require a high dimensionless figure of merit (ZT). Porous structuring of a thermoelectric material is a promising approach to enhance ZT by reducing its thermal conductivity. However, nanopores do not form in thermoelectric materials in a straightforward manner; impurities are also likely to be present in thermoelectric materials. Here, a simple but effective way to synthesize impurity-free nanoporous Bi0.4 Sb1.6 Te3 via the use of nanoporous raw powder, which is scalably formed by the selective dissolution of KCl after collision between Bi0.4 Sb1.6 Te3 and KCl powders, is proposed. This approach creates abundant nanopores, which effectively scatter phonons, thereby reducing the lattice thermal conductivity by 33% from 0.55 to 0.37 W m-1 K-1 . Benefitting from the optimized porous structure, porous Bi0.4 Sb1.6 Te3 achieves a high ZT of 1.41 in the temperature range of 333-373 K, and an excellent average ZT of 1.34 over a wide temperature range of 298-473 K. This study provides a facile and scalable method for developing high thermoelectric performance Bi2 Te3 -based alloys that can be further applied to other thermoelectric materials.
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Affiliation(s)
- Seunghyeok Lee
- Electronic Materials Research Center, Korea Institute of Science and Technology Seoul, Seoul, 02792, South Korea
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, South Korea
| | - Sung-Jin Jung
- Electronic Materials Research Center, Korea Institute of Science and Technology Seoul, Seoul, 02792, South Korea
| | - Gwang Min Park
- Electronic Materials Research Center, Korea Institute of Science and Technology Seoul, Seoul, 02792, South Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, South Korea
| | - Min Young Na
- Advanced Analysis and Data Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Kwang-Chon Kim
- Electronic Materials Research Center, Korea Institute of Science and Technology Seoul, Seoul, 02792, South Korea
| | - Junpyo Hong
- Materials Architecturing Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
- Convergence Research Center for Solutions to Electromagnetic Interference in Future-mobility, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Albert S Lee
- Materials Architecturing Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
- Convergence Research Center for Solutions to Electromagnetic Interference in Future-mobility, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Seung-Hyub Baek
- Electronic Materials Research Center, Korea Institute of Science and Technology Seoul, Seoul, 02792, South Korea
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, South Korea
- Yonsei-KIST Convergence Research Institute, Seoul, 02792, South Korea
- Nanomaterials Science & Engineering, KIST School, Korea University of Science and Technology, Seoul, 02792, South Korea
| | - Heesuk Kim
- Soft Hybrid Materials Research Center, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - Tae Joo Park
- Department of Materials Science and Chemical Engineering, Hanyang University, Ansan, 15588, South Korea
| | - Jin-Sang Kim
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology, Wanju, 55324, South Korea
| | - Seong Keun Kim
- Electronic Materials Research Center, Korea Institute of Science and Technology Seoul, Seoul, 02792, South Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, South Korea
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9
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Gayner C, Menezes LT, Natanzon Y, Kauffmann Y, Kleinke H, Amouyal Y. Development of Nanostructured Bi 2Te 3 with High Thermoelectric Performance by Scalable Synthesis and Microstructure Manipulations. ACS APPLIED MATERIALS & INTERFACES 2023; 15:13012-13024. [PMID: 36877663 DOI: 10.1021/acsami.2c21561] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Nanostructuring of thermoelectric (TE) materials leads to improved energy conversion performance; however, it requires a perfect fit between the nanoprecipitates' chemistry and crystal structure and those of the matrix. We synthesize bulk Bi2Te3 from molecular precursors and characterize their structure and chemistry using electron microscopy and analyze their TE transport properties in the range of 300-500 K. We find that synthesis from Bi2O3 + Na2TeO3 precursors results in n-type Bi2Te3 containing a high number density (Nv ∼ 2.45 × 1023 m-3) of Te-nanoprecipitates decorating the Bi2Te3 grain boundaries (GBs), which yield enhanced TE performance with a power factor (PF) of ∼19 μW cm-1 K-2 at 300 K. First-principles calculations validate the role of Te/Bi2Te3 interfaces in increasing the charge carrier concentration, density of states, and electrical conductivity. These optimized TE coefficients yield a promising TE figure of merit (zT) peak value of 1.30 at 450 K and an average zT of 1.14 from 300 to 500 K. This is one of the cutting-edge zT values recorded for n-type Bi2Te3 produced by chemical routes. We believe that this chemical synthesis strategy will be beneficial for future development of scalable n-type Bi2Te3 based devices.
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Affiliation(s)
- Chhatrasal Gayner
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Luke T Menezes
- Department of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Yuriy Natanzon
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Yaron Kauffmann
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel
| | - Holger Kleinke
- Department of Chemistry and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Yaron Amouyal
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 32000, Israel
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10
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Microstructure Evolution in Plastic Deformed Bismuth Telluride for the Enhancement of Thermoelectric Properties. MATERIALS 2022; 15:ma15124204. [PMID: 35744268 PMCID: PMC9230931 DOI: 10.3390/ma15124204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/04/2022] [Accepted: 06/09/2022] [Indexed: 11/25/2022]
Abstract
Thermoelectric generators are solid-state energy-converting devices that are promising alternative energy sources. However, during the fabrication of these devices, many waste scraps that are not eco-friendly and with high material cost are produced. In this work, a simple powder processing technology is applied to prepare n-type Bi2Te3 pellets by cold pressing (high pressure at room temperature) and annealing the treatment with a canning package to recycle waste scraps. High-pressure cold pressing causes the plastic deformation of densely packed pellets. Then, the thermoelectric properties of pellets are improved through high-temperature annealing (500 ∘C) without phase separation. This enhancement occurs because tellurium cannot escape from the canning package. In addition, high-temperature annealing induces rapid grain growth and rearrangement, resulting in a porous structure. Electrical conductivity is increased by abnormal grain growth, whereas thermal conductivity is decreased by the porous structure with phonon scattering. Owing to the low thermal conductivity and satisfactory electrical conductivity, the highest ZT value (i.e., 1.0) is obtained by the samples annealed at 500 ∘C. Hence, the proposed method is suitable for a cost-effective and environmentally friendly way.
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11
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Yue T, Xu B, Zhao Y, Meng S, Dai Z. Ultra-low lattice thermal conductivity and anisotropic thermoelectric transport properties in Zintl compound β-K 2Te 2. Phys Chem Chem Phys 2022; 24:4666-4673. [PMID: 35133351 DOI: 10.1039/d1cp05248a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A good thermoelectric (TE) performance is usually the result of the coexistence of an ultralow thermal conductivity and a high TE power factor in the same material. In this paper, we investigate the thermal transport and TE properties of the Zintl compound β-K2Te2 based on a combination of first-principles calculations and the Boltzmann transport equation. Remarkably, the calculated lattice thermal conductivity κL in hexagonal β-K2Te2 is ultralow with a value of 0.19 (0.30) W m-1 K-1 along the c (a and b) axis at 300 K due to the small phonon group velocity and phonon lifetime, which is comparable to the κL for wood and promises possible good TE performance. By taking the fully anisotropic acoustic deformation potential scattering, polar optical phonon scattering, and ionized impurity scattering into account, the rational electron scattering and transport properties are captured, which indicates a power factor exceeding 2.0 mW m-1 K-2. As a result, the anomalously high n-type ZT of 2.62 and p-type ZT of 3.82 at 650 K along the c axis are obtained in the hexagonal β-K2Te2, breaking the long-term record of ZT < 3.5 in the majority of the reported TE materials until now. These findings support that hexagonal β-K2Te2 is a potential candidate for high-efficiency TE applications.
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Affiliation(s)
- Tongcai Yue
- Department of Physics, Yantai University, Yantai 264005, People's Republic of China.
| | - Baolong Xu
- Department of Physics, Yantai University, Yantai 264005, People's Republic of China.
| | - Yinchang Zhao
- Department of Physics, Yantai University, Yantai 264005, People's Republic of China.
| | - Sheng Meng
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China. .,Collaborative Innovation Center of Quantum Matter, Beijing 100084, People's Republic of China
| | - Zhenhong Dai
- Department of Physics, Yantai University, Yantai 264005, People's Republic of China.
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Chen WY, Shi XL, Zou J, Chen ZG. Thermoelectric Coolers: Progress, Challenges, and Opportunities. SMALL METHODS 2022; 6:e2101235. [PMID: 34989165 DOI: 10.1002/smtd.202101235] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/27/2021] [Indexed: 06/14/2023]
Abstract
Owing to the free of noise, mechanical component, working fluid, and chemical reaction, thermoelectric cooling is regarded as a suitable solution to address the greenhouse emission for the broad cooling scenarios. Here, the significant progress of state-of-the-art thermoelectric coolers is comprehensively summarized and the related aspects of materials, fundamental design, heat sinks, and structures, are overviewed. Particularly, the usage of thermoelectric coolers in smart city, greenhouse, and personal and chip thermal management is highlighted. In the end, current challenges and future opportunities for further improvement of designs, performance, and applications of thermoelectric coolers are pointed out.
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Affiliation(s)
- Wen-Yi Chen
- School of Mechanical and Ming Engineering, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Xiao-Lei Shi
- School of Mechanical and Ming Engineering, The University of Queensland, Brisbane, Queensland, 4072, Australia
- Centre for Future Materials, University of Southern Queensland, Springfield Central, Queensland, 4300, Australia
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland, 4000, Australia
| | - Jin Zou
- School of Mechanical and Ming Engineering, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Zhi-Gang Chen
- School of Mechanical and Ming Engineering, The University of Queensland, Brisbane, Queensland, 4072, Australia
- Centre for Future Materials, University of Southern Queensland, Springfield Central, Queensland, 4300, Australia
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland, 4000, Australia
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Jiao WY, Hu R, Han SH, Luo YF, Yuan HM, Li MK, Liu HJ. Surprisingly good thermoelectric performance of monolayer C 3N. NANOTECHNOLOGY 2021; 33:045401. [PMID: 34653997 DOI: 10.1088/1361-6528/ac302c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
The rapid emergence of graphene has attracted numerous efforts to explore other two-dimensional materials. Here, we combine first-principles calculations and Boltzmann theory to investigate the structural, electronic, and thermoelectric transport properties of monolayer C3N, which exhibits a honeycomb structure very similar to graphene. It is found that the system is both dynamically and thermally stable even at high temperature. Unlike graphene, the monolayer has an indirect band gap of 0.38 eV and much lower lattice thermal conductivity. Moreover, the system exhibits obviously larger electrical conductivity and Seebeck coefficients for the hole carriers. Consequently, theZTvalue ofp-type C3N can reach 1.4 at 1200 K when a constant relaxation time is predicted by the simple deformation potential theory. However, such a largerZTis reduced to 0.6 if we fully consider the electron-phonon coupling. Even so, the thermoelectric performance of monolayer C3N is still significantly enhanced compared with that of graphene, and is surprisingly good for low-dimensional thermoelectric materials consisting of very light elements.
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Affiliation(s)
- W Y Jiao
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - R Hu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - S H Han
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - Y F Luo
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - H M Yuan
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - M K Li
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - H J Liu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
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Hamawandi B, Batili H, Paul M, Ballikaya S, Kilic NI, Szukiewicz R, Kuchowicz M, Johnsson M, Toprak MS. Minute-Made, High-Efficiency Nanostructured Bi 2Te 3 via High-Throughput Green Solution Chemical Synthesis. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2053. [PMID: 34443884 PMCID: PMC8400796 DOI: 10.3390/nano11082053] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/09/2021] [Accepted: 08/11/2021] [Indexed: 12/25/2022]
Abstract
Scalable synthetic strategies for high-quality and reproducible thermoelectric (TE) materials is an essential step for advancing the TE technology. We present here very rapid and effective methods for the synthesis of nanostructured bismuth telluride materials with promising TE performance. The methodology is based on an effective volume heating using microwaves, leading to highly crystalline nanostructured powders, in a reaction duration of two minutes. As the solvents, we demonstrate that water with a high dielectric constant is as good a solvent as ethylene glycol (EG) for the synthetic process, providing a greener reaction media. Crystal structure, crystallinity, morphology, microstructure and surface chemistry of these materials were evaluated using XRD, SEM/TEM, XPS and zeta potential characterization techniques. Nanostructured particles with hexagonal platelet morphology were observed in both systems. Surfaces show various degrees of oxidation, and signatures of the precursors used. Thermoelectric transport properties were evaluated using electrical conductivity, Seebeck coefficient and thermal conductivity measurements to estimate the TE figure-of-merit, ZT. Low thermal conductivity values were obtained, mainly due to the increased density of boundaries via materials nanostructuring. The estimated ZT values of 0.8-0.9 was reached in the 300-375 K temperature range for the hydrothermally synthesized sample, while 0.9-1 was reached in the 425-525 K temperature range for the polyol (EG) sample. Considering the energy and time efficiency of the synthetic processes developed in this work, these are rather promising ZT values paving the way for a wider impact of these strategic materials with a minimum environmental impact.
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Affiliation(s)
- Bejan Hamawandi
- Department of Applied Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden; (H.B.); (M.P.); (N.I.K.)
| | - Hazal Batili
- Department of Applied Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden; (H.B.); (M.P.); (N.I.K.)
| | - Moon Paul
- Department of Applied Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden; (H.B.); (M.P.); (N.I.K.)
| | - Sedat Ballikaya
- Department of Physics, University of Istanbul, Istanbul 34135, Turkey;
| | - Nuzhet I. Kilic
- Department of Applied Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden; (H.B.); (M.P.); (N.I.K.)
| | - Rafal Szukiewicz
- Institute of Experimental Physics, University of Wroclaw, Maxa Borna 9, 50-204 Wroclaw, Poland; (R.S.); (M.K.)
| | - Maciej Kuchowicz
- Institute of Experimental Physics, University of Wroclaw, Maxa Borna 9, 50-204 Wroclaw, Poland; (R.S.); (M.K.)
| | - Mats Johnsson
- Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden;
| | - Muhammet S. Toprak
- Department of Applied Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden; (H.B.); (M.P.); (N.I.K.)
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Zhu Q, Wang S, Wang X, Suwardi A, Chua MH, Soo XYD, Xu J. Bottom-Up Engineering Strategies for High-Performance Thermoelectric Materials. NANO-MICRO LETTERS 2021; 13:119. [PMID: 34138379 PMCID: PMC8093352 DOI: 10.1007/s40820-021-00637-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 01/22/2021] [Indexed: 05/02/2023]
Abstract
The recent advancements in thermoelectric materials are largely credited to two factors, namely established physical theories and advanced materials engineering methods. The developments in the physical theories have come a long way from the "phonon glass electron crystal" paradigm to the more recent band convergence and nanostructuring, which consequently results in drastic improvement in the thermoelectric figure of merit value. On the other hand, the progresses in materials fabrication methods and processing technologies have enabled the discovery of new physical mechanisms, hence further facilitating the emergence of high-performance thermoelectric materials. In recent years, many comprehensive review articles are focused on various aspects of thermoelectrics ranging from thermoelectric materials, physical mechanisms and materials process techniques in particular with emphasis on solid state reactions. While bottom-up approaches to obtain thermoelectric materials have widely been employed in thermoelectrics, comprehensive reviews on summarizing such methods are still rare. In this review, we will outline a variety of bottom-up strategies for preparing high-performance thermoelectric materials. In addition, state-of-art, challenges and future opportunities in this domain will be commented.
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Affiliation(s)
- Qiang Zhu
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Suxi Wang
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Xizu Wang
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Ady Suwardi
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Ming Hui Chua
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Xiang Yun Debbie Soo
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Jianwei Xu
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore.
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.
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16
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The multi-dimensional approach to synergistically improve the performance of inorganic thermoelectric materials: A critical review. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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17
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Chen J, Liu T, Bao D, Zhang B, Han G, Liu C, Tang J, Zhou D, Yang L, Chen ZG. Nanostructured monoclinic Cu 2Se as a near-room-temperature thermoelectric material. NANOSCALE 2020; 12:20536-20542. [PMID: 33026377 DOI: 10.1039/d0nr05829g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Searching for new-type, eco-friendly, and Earth-abundant thermoelectric materials, which can be used as an alternative to the high-cost bismuth telluride, is important for near-room-temperature applications. In this work, nanostructured monoclinic Cu2Se with a low carrier concentration has been synthesized by a wet mechanical alloying process combined with spark plasma sintering. Such a low carrier concentration, which originates from the effectively suppressed Cu deficiencies during the fabrication process, induces a relatively low electrical conductivity and carrier thermal conductivity. Besides, the nanostructured grains combined with point defects and phonon resonance enhance the phonon scattering to induce a low lattice thermal conductivity without sacrificing the electrical transport properties. As a result, our nanostructured monoclinic Cu2Se obtains a figure of merit of 0.72 at 380 K with good thermal stability. This work indicates that nanostructured monoclinic Cu2Se is a promising near-room-temperature thermoelectric material.
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Affiliation(s)
- Jie Chen
- School of Materials Science & Engineering, Sichuan University, Chengdu 610064, China.
| | - Taoyi Liu
- School of Materials Science & Engineering, Sichuan University, Chengdu 610064, China.
| | - Deyu Bao
- School of Materials Science & Engineering, Sichuan University, Chengdu 610064, China.
| | - Bin Zhang
- Analytical and Testing Center, Chongqing University, Chongqing 401331, China
| | - Guang Han
- College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
| | - Can Liu
- School of Materials Science & Engineering, Sichuan University, Chengdu 610064, China.
| | - Jun Tang
- Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
| | - Dali Zhou
- School of Materials Science & Engineering, Sichuan University, Chengdu 610064, China.
| | - Lei Yang
- School of Materials Science & Engineering, Sichuan University, Chengdu 610064, China.
| | - Zhi-Gang Chen
- Centre for Future Materials, University of Southern Queensland, Springfield Central, Queensland 4300, Australia and School of Mechanical and Mining Engineering, University of Queensland, St Lucia, Queensland 4072, Australia
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18
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Dargusch M, Liu W, Chen Z. Thermoelectric Generators: Alternative Power Supply for Wearable Electrocardiographic Systems. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001362. [PMID: 32999843 PMCID: PMC7509711 DOI: 10.1002/advs.202001362] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 06/18/2020] [Indexed: 05/19/2023]
Abstract
Research interest in the development of real-time monitoring of personal health indicators using wearable electrocardiographic systems has intensified in recent years. New advanced thermoelectrics are potentially a key enabling technology that can be used to transform human body heat into power for use in wearable electrographic monitoring devices. This work provides a systematic review of the potential application of thermoelectric generators for use as power sources in wearable electrocardiographic monitoring systems. New strategies on miniaturized rigid thermoelectric modules combined with batteries or supercapacitors can provide adequate power supply for wearable electrocardiographic systems. Flexible thermoelectric generators can also support wearable electrocardiographic systems directly when a heat sink is incorporated into the design in order to enlarge and stabilize the temperature gradient. Recent advances in enhancing the performance of novel fiber/fabric based flexible thermoelectrics has opened up an exciting direction for the development of wearable electrocardiographic systems.
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Affiliation(s)
- Matthew Dargusch
- School of Mechanical and Mining EngineeringThe University of QueenslandBrisbaneQueensland4072Australia
| | - Wei‐Di Liu
- School of Mechanical and Mining EngineeringThe University of QueenslandBrisbaneQueensland4072Australia
| | - Zhi‐Gang Chen
- School of Mechanical and Mining EngineeringThe University of QueenslandBrisbaneQueensland4072Australia
- Center for Future MaterialsUniversity of Southern QueenslandSpringfield CentralBrisbaneQueensland4300Australia
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19
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Lim SS, Kim KC, Jeon H, Kim JY, Kang JY, Park HH, Baek SH, Kim JS, Kim SK. Enhanced thermal stability of Bi2Te3-based alloys via interface engineering with atomic layer deposition. Ann Ital Chir 2020. [DOI: 10.1016/j.jeurceramsoc.2020.04.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Shi XL, Zou J, Chen ZG. Advanced Thermoelectric Design: From Materials and Structures to Devices. Chem Rev 2020; 120:7399-7515. [PMID: 32614171 DOI: 10.1021/acs.chemrev.0c00026] [Citation(s) in RCA: 377] [Impact Index Per Article: 94.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The long-standing popularity of thermoelectric materials has contributed to the creation of various thermoelectric devices and stimulated the development of strategies to improve their thermoelectric performance. In this review, we aim to comprehensively summarize the state-of-the-art strategies for the realization of high-performance thermoelectric materials and devices by establishing the links between synthesis, structural characteristics, properties, underlying chemistry and physics, including structural design (point defects, dislocations, interfaces, inclusions, and pores), multidimensional design (quantum dots/wires, nanoparticles, nanowires, nano- or microbelts, few-layered nanosheets, nano- or microplates, thin films, single crystals, and polycrystalline bulks), and advanced device design (thermoelectric modules, miniature generators and coolers, and flexible thermoelectric generators). The outline of each strategy starts with a concise presentation of their fundamentals and carefully selected examples. In the end, we point out the controversies, challenges, and outlooks toward the future development of thermoelectric materials and devices. Overall, this review will serve to help materials scientists, chemists, and physicists, particularly students and young researchers, in selecting suitable strategies for the improvement of thermoelectrics and potentially other relevant energy conversion technologies.
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Affiliation(s)
- Xiao-Lei Shi
- Centre for Future Materials, University of Southern Queensland, Springfield Central, Queensland 4300, Australia.,School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Jin Zou
- School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia.,Centre for Microscopy and Microanalysis, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Zhi-Gang Chen
- Centre for Future Materials, University of Southern Queensland, Springfield Central, Queensland 4300, Australia.,School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia
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21
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Shi X, Tao X, Zou J, Chen Z. High-Performance Thermoelectric SnSe: Aqueous Synthesis, Innovations, and Challenges. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1902923. [PMID: 32274303 PMCID: PMC7141048 DOI: 10.1002/advs.201902923] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/04/2019] [Indexed: 05/18/2023]
Abstract
Tin selenide (SnSe) is one of the most promising candidates to realize environmentally friendly, cost-effective, and high-performance thermoelectrics, derived from its outstanding electrical transport properties by appropriate bandgaps and intrinsic low lattice thermal conductivity from its anharmonic layered structure. Advanced aqueous synthesis possesses various unique advantages including convenient morphology control, exceptional high doping solubility, and distinctive vacancy engineering. Considering that there is an urgent demand for a comprehensive survey on the aqueous synthesis technique applied to thermoelectric SnSe, herein, a thorough overview of aqueous synthesis, characterization, and thermoelectric performance in SnSe is provided. New insights into the aqueous synthesis-based strategies for improving the performance are provided, including vacancy synergy, crystallization design, solubility breakthrough, and local lattice imperfection engineering, and an attempt to build the inherent links between the aqueous synthesis-induced structural characteristics and the excellent thermoelectric performance is presented. Furthermore, the significant advantages and potentials of an aqueous synthesis route for fabricating SnSe-based 2D thermoelectric generators, including nanorods, nanobelts, and nanosheets, are also discussed. Finally, the controversy, strategy, and outlook toward future enhancement of SnSe-based thermoelectric materials are also provided. This Review guides the design of thermoelectric SnSe with high performance and provides new perspectives as a reference for other thermoelectric systems.
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Affiliation(s)
- Xiao‐Lei Shi
- Centre for Future MaterialsUniversity of Southern QueenslandSpringfield CentralBrisbaneQueensland4300Australia
| | - Xinyong Tao
- College of Materials Science and EngineeringZhejiang University of TechnologyHangzhou310014China
| | - Jin Zou
- School of Mechanical and Mining EngineeringThe University of QueenslandBrisbaneQueensland4072Australia
- Centre for Microscopy and MicroanalysisThe University of QueenslandBrisbaneQueensland4072Australia
| | - Zhi‐Gang Chen
- Centre for Future MaterialsUniversity of Southern QueenslandSpringfield CentralBrisbaneQueensland4300Australia
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22
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Qiao J, Zhao Y, Jin Q, Tan J, Kang S, Qiu J, Tai K. Tailoring Nanoporous Structures in Bi 2Te 3 Thin Films for Improved Thermoelectric Performance. ACS APPLIED MATERIALS & INTERFACES 2019; 11:38075-38083. [PMID: 31545038 DOI: 10.1021/acsami.9b13920] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thin-film thermoelectrics (TEs) with unique advantages have triggered great interest in thermal management and energy harvesting technology for ambient temperature microscale systems. Although they have exhibited a good prospect, their unsatisfactory performances still seriously hamper their widespread application. Tailoring the porous structure has been demonstrated to be a facile strategy to significantly reduce thermal conductivity and enhance the figure of merit (ZT) of bulk TE materials; however, it is challenging for thin-film TEs. Here, the nanoporous Bi2Te3 thin films with faceted pore shapes and various porosities, pore sizes, and pore intervals are carefully designed and fabricated by evacuating the over-stoichiometry Te atoms. The dependence of the carrier mobility and lattice thermal conductivity on the pore characteristics is investigated. In the case of the pore interval longer than the electron mean free path, the porous structure greatly reduces the lattice thermal conductivity without affecting the electrical conductivity obviously. Phonon specular backscattering that is highly related to the pore characteristics is suggested to be mainly responsible for thermal conductivity reduction, resulting in ∼60% enhancement in ZT at room temperature, that is, from ∼0.42 for the dense film to ∼0.67 for the nanoporous film. The enhanced ZT value is comparable to that of commercial bulk TEs and can be further improved by optimizing the carrier concentrations. This work provides a general approach to fabricate high-performance chalcogenide TE thin-film materials.
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Affiliation(s)
- Jixiang Qiao
- Shenyang National Laboratory for Materials Science, Institute of Metal Research , Chinese Academy of Sciences , Shenyang 110016 , China
- Department of Materials Science and Engineering , University of Science and Technology of China , Shenyang 110016 , China
| | - Yang Zhao
- Shenyang National Laboratory for Materials Science, Institute of Metal Research , Chinese Academy of Sciences , Shenyang 110016 , China
- Department of Materials Science and Engineering , University of Science and Technology of China , Shenyang 110016 , China
| | - Qun Jin
- Shenyang National Laboratory for Materials Science, Institute of Metal Research , Chinese Academy of Sciences , Shenyang 110016 , China
- University of Chinese Academy of Sciences , Shenyang 110016 , China
| | - Jun Tan
- Shenyang National Laboratory for Materials Science, Institute of Metal Research , Chinese Academy of Sciences , Shenyang 110016 , China
| | - Siqing Kang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research , Chinese Academy of Sciences , Shenyang 110016 , China
| | - Jianhang Qiu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research , Chinese Academy of Sciences , Shenyang 110016 , China
| | - Kaiping Tai
- Shenyang National Laboratory for Materials Science, Institute of Metal Research , Chinese Academy of Sciences , Shenyang 110016 , China
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