1
|
Dixit P, Jana SS, Maiti T. Enhanced Thermoelectric Performance of Rare-Earth-Free n-Type Oxide Perovskite Composite with Graphene Analogous 2D MXene. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206710. [PMID: 36852637 DOI: 10.1002/smll.202206710] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 02/08/2023] [Indexed: 06/02/2023]
Abstract
Here, the first experimental demonstration on the effect of incorporating new generation 2D material, MXene, on the thermoelectric performance of rare-earth-free oxide perovskite is reported. The charge localization phenomenon is predominant in the electron transport of doped SrTiO3 perovskites, which deters from achieving a higher thermoelectric power factor in these oxides. In this work, it is shown that incorporating Ti3 C2 Tx MXene in a matrix of SrTi0.85 Nb0.15 O3 (STN) facilitates the delocalization of electrons resulting in better than single-crystal-like electron mobility in polycrystalline composites. A 1851% increase in electrical conductivity and a 1000% enhancement in power factor are attained. Besides, anharmonicity caused by MXene in the STN matrix has led to enhanced Umklapp scattering giving rise to lower lattice thermal conductivity. Hence, 700% ZT enhancement is achieved in this composite. Further, a prototype of thermoelectric generator (TEG) using only n-type STN + MXene is fabricated and a power output of 38 mW is obtained, which is higher than the reported values for oxide TEG.
Collapse
Affiliation(s)
- Pragya Dixit
- Plasmonics and Perovskites Laboratory, Department of Materials Science and Engineering, IIT Kanpur, Kanpur, Uttar Pradesh, 208016, India
| | - Subhra Sourav Jana
- Plasmonics and Perovskites Laboratory, Department of Materials Science and Engineering, IIT Kanpur, Kanpur, Uttar Pradesh, 208016, India
| | - Tanmoy Maiti
- Plasmonics and Perovskites Laboratory, Department of Materials Science and Engineering, IIT Kanpur, Kanpur, Uttar Pradesh, 208016, India
| |
Collapse
|
2
|
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.
Collapse
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
| |
Collapse
|
3
|
Zhu Y, Azough F, Liu X, Zhong X, Zhao M, Margaronis K, Kar-Narayan S, Kinloch I, Lewis DJ, Freer R. Precursor-Led Grain Boundary Engineering for Superior Thermoelectric Performance in Niobium Strontium Titanate. ACS APPLIED MATERIALS & INTERFACES 2023; 15:13097-13107. [PMID: 36854123 PMCID: PMC10020962 DOI: 10.1021/acsami.2c22712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
We present a novel method to significantly enhance the thermoelectric performance of ceramics in the model system SrTi0.85Nb0.15O3 through the use of the precursor ammonium tetrathiomolybdate (0.5-2% w/w additions). After sintering the precursor-infused green body at 1700 K for 24 h in 5% H2/Ar, single-crystal-like electron transport behavior developed with electrical conductivity reaching ∼3000 S/cm at ∼300 K, almost a magnitude higher than that in the control sample. During processing, the precursor transformed into MoS2, then into MoOx, and finally into Mo particles. This limited grain growth promoted secondary phase generation but importantly helped to reduce the grain boundary barriers. Samples prepared with additions of the precursor exhibited vastly increased electrical conductivity, without significant impact on Seebeck coefficients giving rise to high power factor values of 1760 μW/mK2 at ∼300 K and a maximum thermoelectric figure-of-merit zT of 0.24 at 823 K. This processing strategy provides a simple method to achieve high charge mobility in polycrystalline titanate and related materials and with the potential to create "phonon-glass-electron-crystal" oxide thermoelectric materials.
Collapse
Affiliation(s)
- Yibing Zhu
- Department
of Materials, School of Natural Sciences, University of Manchester, Manchester M13 9PL, U.K.
| | - Feridoon Azough
- Department
of Materials, School of Natural Sciences, University of Manchester, Manchester M13 9PL, U.K.
| | - Xiaodong Liu
- Department
of Materials, School of Natural Sciences, University of Manchester, Manchester M13 9PL, U.K.
| | - Xiangli Zhong
- Department
of Materials, School of Natural Sciences, University of Manchester, Manchester M13 9PL, U.K.
| | - Minghao Zhao
- Department
of Chemistry, School of Natural Sciences, University of Manchester, Manchester M13 9PL, U.K.
| | - Kalliope Margaronis
- Department
of Materials Science & Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, U.K.
| | - Sohini Kar-Narayan
- Department
of Materials Science & Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, U.K.
| | - Ian Kinloch
- Department
of Materials, School of Natural Sciences, University of Manchester, Manchester M13 9PL, U.K.
- Henry
Royce Institute and National Graphene Institute, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - David J. Lewis
- Department
of Materials, School of Natural Sciences, University of Manchester, Manchester M13 9PL, U.K.
| | - Robert Freer
- Department
of Materials, School of Natural Sciences, University of Manchester, Manchester M13 9PL, U.K.
| |
Collapse
|
4
|
Ekren D, Cao J, Azough F, Kepaptsoglou D, Ramasse Q, Kinloch IA, Freer R. Controlling the Thermoelectric Behavior of La-Doped SrTiO 3 through Processing and Addition of Graphene Oxide. ACS APPLIED MATERIALS & INTERFACES 2022; 14:53711-53723. [PMID: 36413504 PMCID: PMC9743083 DOI: 10.1021/acsami.2c14408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
The addition of graphene has been reported as a potential route to enhance the thermoelectric performance of SrTiO3. However, the interplay between processing parameters and graphene addition complicates understanding this enhancement. Herein, we examine the effects of processing parameters and graphene addition on the thermoelectric performance of La-doped SrTiO3 (LSTO). Briefly, two types of graphene oxide (GO) at different oxidation degrees were used, while the LSTO pellets were densified under two conditions with different reducing strengths (with/without using oxygen-scavenging carbon powder bed muffling). Raman imaging of the LSTO green body and sintered pellets suggests that the added GO sacrificially reacts with the lattice oxygen, which creates more oxygen vacancies and improves electrical conductivity regardless of the processing conditions. The addition of mildly oxidized electrochemical GO (EGO) yields better performance than the conventional heavily oxidized chemical GO (CGO). Moreover, we found that muffling the green body with an oxygen-scavenging carbon powder bed during sintering is vital to achieving a single-crystal-like temperature dependence of electrical conductivity, implying that a highly reducing environment is critical for eliminating the grain boundary barriers. Combining 1.0 wt % EGO addition with a highly reducing environment leads to the highest electrical conductivity of 2395 S cm-1 and power factor of 2525μW m-1 K-2 at 300 K, with an improved average zT value across the operating temperature range of 300-867 K. STEM-EELS maps of the optimized sample show a pronounced depletion of Sr and evident deficiency of O and La at the grain boundary region. Theoretical modeling using a two-phase model implies that the addition of GO can effectively improve carrier mobility in the grain boundary phase. This work provides guidance for the development of high-performance thermoelectric ceramic oxides.
Collapse
Affiliation(s)
- Dursun Ekren
- Department
of Materials, University of Manchester, Oxford Road, ManchesterM13 9PL, U.K.
- Department
of Metallurgical and Materials Engineering, Iskenderun Technical University, İskenderun31200, Hatay, Turkey
| | - Jianyun Cao
- Department
of Materials, University of Manchester, Oxford Road, ManchesterM13 9PL, U.K.
- Key
Laboratory of LCR Materials and Devices of Yunnan Province, School
of Materials Science and Energy, Yunnan
University, Kunming650500, China
| | - Feridoon Azough
- Department
of Materials, University of Manchester, Oxford Road, ManchesterM13 9PL, U.K.
| | - Demie Kepaptsoglou
- SuperSTEM
Laboratory, SciTech Daresbury Campus, Daresbury, WarringtonWA4
4AD, U.K.
- Department
of Physics, University of York, YorkYO10 5DD, U.K.
| | - Quentin Ramasse
- SuperSTEM
Laboratory, SciTech Daresbury Campus, Daresbury, WarringtonWA4
4AD, U.K.
- School of
Chemical and Process Engineering, University
of Leeds, LeedsLS2 9JT, U.K.
| | - Ian A. Kinloch
- Department
of Materials, University of Manchester, Oxford Road, ManchesterM13 9PL, U.K.
- Henry
Royce Institute and National Graphene Institute, University of Manchester, Oxford Road, ManchesterM13 9PL, U.K.
| | - Robert Freer
- Department
of Materials, University of Manchester, Oxford Road, ManchesterM13 9PL, U.K.
| |
Collapse
|
5
|
Enhanced thermoelectric performance of UV-curable silver (I) selenide-based composite for energy harvesting. Sci Rep 2021; 11:16683. [PMID: 34404869 PMCID: PMC8371107 DOI: 10.1038/s41598-021-96267-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 07/29/2021] [Indexed: 11/24/2022] Open
Abstract
Thermoelectric (TE) composites, with photocured resin as the matrix and Ag2Se (AS) as the filler, are synthesized by a digital-light-processing (DLP) based 3D printer. The mixture of diurethane dimethacrylate (DUDMA) and isobornyl acrylate (IBOA) is used as a UV-curable resin because of their low viscosity and high miscibility. Scanning electron microscopy (FE-SEM) images confirm that the filler retains its shape and remains after the UV-curing process. After completing curing, the mechanical and thermoelectric properties of the composite with different AS contents were measured. The addition of the AS filler increases the thermoelectric properties of the cured resin. When the AS contents increase by 30 wt.%, the maximum power factor was obtained (~ 51.5 μW/m·K2 at room temperature). Additionally, due to the phonon scattering effect between the interfaces, the thermal conductivity of composite is lower than that of pristine photoresin. The maximum thermoelectric figure of merit (ZT) is ~ 0.12, which is achieved with 30 wt.% of AS at 300 K with the enhanced power factor and reduced thermal conductivity. This study presents a novel manufacturing method for a thermoelectric composite using 3D printing.
Collapse
|
6
|
Zulkepli N, Yunas J, Mohamed MA, Hamzah AA. Review of Thermoelectric Generators at Low Operating Temperatures: Working Principles and Materials. MICROMACHINES 2021; 12:734. [PMID: 34206662 PMCID: PMC8303398 DOI: 10.3390/mi12070734] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/17/2021] [Accepted: 06/17/2021] [Indexed: 11/17/2022]
Abstract
Thermoelectric generators (TEGs) are a form of energy harvester and eco-friendly power generation system that directly transform thermal energy into electrical energy. The thermoelectric (TE) method of energy harvesting takes advantage of the Seebeck effect, which offers a simple solution for fulfilling the power-supply demand in almost every electronics system. A high-temperature condition is commonly essential in the working mechanism of the TE device, which unfortunately limits the potential implementation of the device. This paper presents an in-depth analysis of TEGs at low operating temperature. The review starts with an extensive description of their fundamental working principles, structure, physical properties, and the figure of merit (ZT). An overview of the associated key challenges in optimising ZT value according to the physical properties is discussed, including the state of the art of the advanced approaches in ZT optimisation. Finally, this manuscript summarises the research status of Bi2Te3-based semiconductors and other compound materials as potential materials for TE generators working at low operating temperatures. The improved TE materials suggest that TE power-generation technology is essential for sustainable power generation at near-room temperature to satisfy the requirement for reliable energy supplies in low-power electrical/electronics systems.
Collapse
Affiliation(s)
- Nurkhaizan Zulkepli
- Institute of Microengineering and Nanoelectronic (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi 46300, Malaysia; (N.Z.); (M.A.M.)
- Centre of Foundation Studies, Universiti Teknologi MARA, Cawangan Selangor, Kampus Dengkil, Dengkil 43800, Malaysia
| | - Jumril Yunas
- Institute of Microengineering and Nanoelectronic (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi 46300, Malaysia; (N.Z.); (M.A.M.)
| | - Mohd Ambri Mohamed
- Institute of Microengineering and Nanoelectronic (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi 46300, Malaysia; (N.Z.); (M.A.M.)
| | - Azrul Azlan Hamzah
- Institute of Microengineering and Nanoelectronic (IMEN), Universiti Kebangsaan Malaysia (UKM), Bangi 46300, Malaysia; (N.Z.); (M.A.M.)
| |
Collapse
|
7
|
Qin M, Lou Z, Zhang P, Shi Z, Xu J, Chen Y, Gao F. Enhancement of Thermoelectric Performance of Sr 0.9La 0.1TiO 3-Based Ceramics Regulated by Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2020; 12:53899-53909. [PMID: 33207864 DOI: 10.1021/acsami.0c13693] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
La-doped strontium titanite (Sr0.9La0.1TiO3) is a promising candidate for n-type oxide thermoelectric materials. However, the ZT values of this material are low, leading to low conversion efficiency. Improvements in this efficiency are required. In this work, a high ZT value of 0.50 was obtained for Sr0.9La0.1TiO3 ceramic samples by adding 10 wt % Bi2O3 sintering aids and 20 wt % nanosized Ti powders to the matrix material. Although Ti was oxidized to TiO2 during the sintering process, nanoscale phase interfaces were beneficial for phonon scattering and thermal conductivity reduction. Nanosized metallic Bi and Bi2O3 particles were observed. These two factors played an important role in reducing the thermal conductivity from 2.5 W/(m K) at room temperature to 1.31 W/(m K) at 1073 K. Nanostructure control using nanosized metal powders as additives combined with the Bi2O3 sintering aid paves a way for enhancement of thermoelectric properties of oxide thermoelectric materials.
Collapse
Affiliation(s)
- Mengjie Qin
- State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, NPU-QMUL Joint Research Institute of Advanced Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Zhihao Lou
- State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, NPU-QMUL Joint Research Institute of Advanced Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Ping Zhang
- State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, NPU-QMUL Joint Research Institute of Advanced Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Zongmo Shi
- State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, NPU-QMUL Joint Research Institute of Advanced Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Jie Xu
- State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, NPU-QMUL Joint Research Institute of Advanced Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen 518057, China
| | - Yongsheng Chen
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin N.T. 999077, Hong Kong SAR, China
| | - Feng Gao
- State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, NPU-QMUL Joint Research Institute of Advanced Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| |
Collapse
|
8
|
Ahmed AJ, Hossain MSA, Kazi Nazrul Islam SM, Yun F, Yang G, Hossain R, Khan A, Na J, Eguchi M, Yamauchi Y, Wang X. Significant Improvement in Electrical Conductivity and Figure of Merit of Nanoarchitectured Porous SrTiO 3 by La Doping Optimization. ACS APPLIED MATERIALS & INTERFACES 2020; 12:28057-28064. [PMID: 32427455 DOI: 10.1021/acsami.0c01869] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
SrTiO3 is a well-studied n-type metal oxide based thermoelectric (TE) material. In this work, the first-principles calculation of La-doped SrTiO3 has been performed using the density functional theory. In addition, high TE properties of bulk SrTiO3 material have been achieved by introducing nanoscale porosity and optimizing carrier concentration by La doping. The X-ray diffraction, atomic resolution scanning transmission electron microscopy imaging, and energy-dispersive X-ray spectrometry results show that La has been doped successfully into the lattice. The scanning electron microscopy images confirm that all the samples have nearly similar nanoscale porosities. The significant enhancement of electrical conductivity over the broad temperature range has been observed through optimization of La doping. Additionally, the samples possess very low thermal conductivity, which is speculated because of the nanoscale porosity of the samples. Because of this dual mechanism of doping optimization and nanoscale porosity, there is a remarkable improvement in power factor, 1 mW/m2K from 650 to 800 K, and figure of merit, zT of 0.26 at 850 K, of the sample, 22 at. % La-doped SrTiO3.
Collapse
Affiliation(s)
- Al Jumlat Ahmed
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, New South Wales 2500, Australia
| | - Md Shahriar A Hossain
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, New South Wales 2500, Australia
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
- School of Mechanical and Mining Engineering, Faculty of Engineering, Architecture and Information Technology (EAIT), University of Queensland, Saint Lucia, Queensland 4072, Australia
| | - Sheik Md Kazi Nazrul Islam
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, New South Wales 2500, Australia
- School of Mechanical and Physical Sciences, University of Technology Sydney, Sydney, New South Wales 2007, Australia
| | - Frank Yun
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, New South Wales 2500, Australia
| | - Guangsai Yang
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, New South Wales 2500, Australia
| | - Ridwone Hossain
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, New South Wales 2500, Australia
| | - Aslam Khan
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
| | - Jongbeom Na
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
- Research Center for Functional Materials and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Miharu Eguchi
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
- Research Center for Functional Materials and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yusuke Yamauchi
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, Queensland 4072, Australia
- School of Chemical Engineering, Faculty of Engineering, Architecture and Information Technology (EAIT), University of Queensland, Saint Lucia, Queensland 4072, Australia
- Research Center for Functional Materials and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Plant & Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, Republic of Korea
| | - Xiaolin Wang
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, New South Wales 2500, Australia
| |
Collapse
|
9
|
Xie H, Hao S, Bao J, Slade TJ, Snyder GJ, Wolverton C, Kanatzidis MG. All-Inorganic Halide Perovskites as Potential Thermoelectric Materials: Dynamic Cation off-Centering Induces Ultralow Thermal Conductivity. J Am Chem Soc 2020; 142:9553-9563. [DOI: 10.1021/jacs.0c03427] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hongyao Xie
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Shiqiang Hao
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Jinke Bao
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Tyler J. Slade
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - G. Jeffrey Snyder
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Christopher Wolverton
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Mercouri G. Kanatzidis
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| |
Collapse
|
10
|
Correlation between Crystal Structure and Thermoelectric Properties of Sr1−xTi0.9Nb0.1O3−δ Ceramics. CRYSTALS 2020. [DOI: 10.3390/cryst10020100] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Polycrystalline Sr1−xTi0.9Nb0.1O3−δ (x = 0, 0.1, 0.2) ceramics have been prepared by the solid state method and their structural and thermoelectric properties have been studied by neutron powder diffraction (NPD), thermal, and transport measurements. The structural analysis of Sr1-xTi0.9Nb0.1O3−δ (x = 0.1, 0.2) confirms the presence of a significant amount of oxygen vacancies, associated with the Sr-deficiency of the materials. The analysis of the anisotropic displacement parameters (ADPs) indicates a strong softening of the overall phonon modes for these samples, which is confirmed by the extremely low thermal conductivity value (κ ≈ 1.6 W m-1 K−1 at 823 K) found for Sr1−xTi0.9Nb0.1O3−δ (x = 0.1, 0.2). This approach of introducing A-site cation vacancies for decreasing the thermal conductivity seems more effective than the classical substitution of strontium by rare-earth elements in SrTiO3 and opens a new optimization scheme for the thermoelectric properties of oxides.
Collapse
|
11
|
Singh SP, Kanas N, Desissa TD, Johnsson M, Einarsrud MA, Norby T, Wiik K. Thermoelectric properties of A-site deficient La-doped SrTiO3 at 100–900 °C under reducing conditions. Ann Ital Chir 2020. [DOI: 10.1016/j.jeurceramsoc.2019.09.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
12
|
Kangkang Yuan, Jin X, Wang X, Zhang G, Zhu L, Xu D. Effect of La2O3 on Grain Refinement and Thermal Conductivity of 6 mol % Y2O3–ZrO2 Fibers. RUSS J INORG CHEM+ 2019. [DOI: 10.1134/s0036023619110226] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
13
|
Luo H, Gravouil A, Giordano V, Tanguy A. Thermal Transport in a 2D Nanophononic Solid: Role of bi-Phasic Materials Properties on Acoustic Attenuation and Thermal Diffusivity. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1471. [PMID: 31623247 PMCID: PMC6836169 DOI: 10.3390/nano9101471] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 09/10/2019] [Accepted: 10/02/2019] [Indexed: 11/16/2022]
Abstract
Nanophononic materials have recently arisen as a promising way for controlling heat transport, mirroring the results in macroscopic phononic materials for sound transmission, filtering and attenuation applications. Here we present a Finite Element numerical simulation of the transient propagation of an acoustic Wave-Packet in a 2D nanophononic material, which allows to identify the effect of the nanostructuration on the acoustic attenuation length and thus on the transport regime for the vibrational energy. Assuming elastic behavior in the matrix and in the inclusions, we find that the rigidity contrast between them not only tunes the apparent attenuation length of the wave packet along its main trajectory, but gives rise to different behaviours, from weak to strong scattering, and waves pinning. As a consequence, different energy transport regimes can be identified in the three-parameter space of the excitation frequency, inclusions size and rigidity contrast, leading to the identification of a combination of parameters allowing for the shortest attenuation distance. These results could have applications both in the field of acoustic insulation, and for the control of heat transfer.
Collapse
Affiliation(s)
- Haoming Luo
- LaMCos, INSA-Lyon, CNRS UMR5259, Université de Lyon, F-69621 Villeurbanne Cedex, France.
| | - Anthony Gravouil
- LaMCos, INSA-Lyon, CNRS UMR5259, Université de Lyon, F-69621 Villeurbanne Cedex, France.
| | - Valentina Giordano
- Institut Lumière Matière, UMR 5306 Université Lyon 1-CNRS, F-69622 Villeurbanne Cedex, France.
| | - Anne Tanguy
- LaMCos, INSA-Lyon, CNRS UMR5259, Université de Lyon, F-69621 Villeurbanne Cedex, France.
| |
Collapse
|
14
|
Tuning the Electrical and Thermoelectric Properties of N Ion Implanted SrTiO 3 Thin Films and Their Conduction Mechanisms. Sci Rep 2019; 9:14486. [PMID: 31597931 PMCID: PMC6785559 DOI: 10.1038/s41598-019-51079-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 09/11/2019] [Indexed: 11/30/2022] Open
Abstract
The SrTiO3 thin films were fabricated by pulsed laser deposition. Subsequently ion implantation with 60 keV N ions at two different fluences 1 × 1016 and 5 × 1016 ions/cm2 and followed by annealing was carried out. Thin films were then characterized for electronic structure, morphology and transport properties. X-ray absorption spectroscopy reveals the local distortion of TiO6 octahedra and introduction of oxygen vacancies due to N implantation. The electrical and thermoelectric properties of these films were measured as a function of temperature to understand the conduction and scattering mechanisms. It is observed that the electrical conductivity and Seebeck coefficient (S) of these films are significantly enhanced for higher N ion fluence. The temperature dependent electrical resistivity has been analysed in the temperature range of 80–400 K, using various conduction mechanisms and fitted with band conduction, near neighbour hopping (NNH) and variable range hopping (VRH) models. It is revealed that the band conduction mechanism dominates at high temperature regime and in low temperature regime, there is a crossover between NNH and VRH. The S has been analysed using the relaxation time approximation model and dispersive transport mechanism in the temperature range of 300–400 K. Due to improvement in electrical conductivity and thermopower, the power factor is enhanced to 15 µWm−1 K−2 at 400 K at the higher ion fluence which is in the order of ten times higher as compared to the pristine films. This study suggests that ion beam can be used as an effective technique to selectively alter the electrical transport properties of oxide thermoelectric materials.
Collapse
|
15
|
Bhansali S, Khunsin W, Chatterjee A, Santiso J, Abad B, Martin-Gonzalez M, Jakob G, Sotomayor Torres CM, Chávez-Angel E. Enhanced thermoelectric properties of lightly Nb doped SrTiO 3 thin films. NANOSCALE ADVANCES 2019; 1:3647-3653. [PMID: 36133557 PMCID: PMC9419777 DOI: 10.1039/c9na00361d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 07/30/2019] [Indexed: 06/16/2023]
Abstract
Novel thermoelectric materials developed for operation at room temperature must have similar or better performance along with being as ecofriendly as those commercially used, e.g., Bi2Te3, in terms of their toxicity and cost. In this work, we present an in-depth study of the thermoelectric properties of epitaxial Nb-doped strontium titanate (SrTi1-x Nb x O3) thin films as a function of (i) doping concentration, (ii) film thickness and (iii) substrate type. The excellent crystal quality was confirmed by high resolution transmission electron microscopy and X-ray diffraction analysis. The thermoelectric properties were measured by the three-omega method (thermal conductivity) and van der Pauw method (electrical resistivity), complemented by Seebeck coefficient measurements. A maximum power factor of 8.9 × 10-3 W m-1 K-2 and a thermoelectric figure of merit of 0.49 were measured at room temperature in 50 nm-thick films grown on lanthanum strontium aluminate. The mechanisms behind this high figure of merit are discussed in terms of a possible two-dimensional electron gas, increase of the effective mass of the electrons, electron filtering and change in strain due to different substrates. The overall enhancement of the thermoelectric properties suggests that SrTi1-x Nb x O3 is a very promising n-type candidate for room- to high-temperature applications.
Collapse
Affiliation(s)
- S Bhansali
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology Campus UAB, Bellaterra 08193 Barcelona Spain
| | - W Khunsin
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology Campus UAB, Bellaterra 08193 Barcelona Spain
| | - A Chatterjee
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology Campus UAB, Bellaterra 08193 Barcelona Spain
| | - J Santiso
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology Campus UAB, Bellaterra 08193 Barcelona Spain
| | - B Abad
- Instituto de Microelectronica de Madrid, IMM-CNM, CSIC Isaac Newton, 8 PTM 28760 Tres Cantos (Madrid) Spain
| | - M Martin-Gonzalez
- Instituto de Microelectronica de Madrid, IMM-CNM, CSIC Isaac Newton, 8 PTM 28760 Tres Cantos (Madrid) Spain
| | - G Jakob
- Institut für Physik, Johannes Gutenberg Universität Mainz Staudingerweg 7 55128 Mainz Germany
- Graduate School Materials Science in Mainz Staudingerweg 9 55128 Mainz Germany
| | - C M Sotomayor Torres
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology Campus UAB, Bellaterra 08193 Barcelona Spain
- ICREA Passeig Lluis Companys 23 08010 Barcelona Spain
| | - E Chávez-Angel
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, The Barcelona Institute of Science and Technology Campus UAB, Bellaterra 08193 Barcelona Spain
| |
Collapse
|
16
|
Azough F, Gholinia A, Alvarez-Ruiz DT, Duran E, Kepaptsoglou DM, Eggeman AS, Ramasse QM, Freer R. Self-Nanostructuring in SrTiO 3: A Novel Strategy for Enhancement of Thermoelectric Response in Oxides. ACS APPLIED MATERIALS & INTERFACES 2019; 11:32833-32843. [PMID: 31419381 DOI: 10.1021/acsami.9b06483] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanostructuring is recognized as an efficient route for enhancing thermoelectric response. Here, we report a new synthesis strategy for nanostructuring oxide ceramics and demonstrate its effectiveness on an important n-type thermoelectric SrTiO3. Ceramics of Sr0.9La0.1TiO3 with additions of B2O3 were synthesized by the mixed oxide route. Samples were sintered in air followed by annealing in a reducing atmosphere. Crystallographic data from X-ray and electron diffraction showed Pm3̅m cubic symmetry for all the samples. High-resolution transmission electron microscopy (HRTEM) showed the formation of a core-shell type structure within the grains for the annealed ceramics. The cores contain nanosize features comprising pairs of nanosize voids and particles; the feature sizes depend on annealing time. Atomic-resolution, high-angle annular-dark-field imaging and electron energy loss spectroscopy in the scanning transmission electron microscopy (STEM-HAADF-EELS) showed the particles to be rich in Ti and the areas around the voids to contain high concentrations of Ti3+. Additionally, dislocations were observed, with significantly higher densities in the shell areas. The observed dislocations are combined (100) and (110) edge dislocations. The major impact of the core-shell type microstructures, with nanosize inclusions, is the reduction of the thermal conductivity. Sr0.9La0.1TiO3 ceramics containing grain boundary shells of size ≈ 1 μm and inclusions in the core of 60-80 nm exhibit a peak power factor of 1600 μW/m·K2 at 540 K; at 1000 K, they exhibit a low thermal conductivity (2.75 W/m·K) and a power factor of 1050 μW/m·K2 leading to a high of ZT of 0.39 ± 0.03. This is the highest ZT reported so far for Sr0.9La0.1TiO3 based-compositions. This nanostructuring strategy should be readily applicable to other functional oxides.
Collapse
Affiliation(s)
- Feridoon Azough
- School of Materials , University of Manchester , Manchester , M13 9PL , U.K
| | - Ali Gholinia
- School of Materials , University of Manchester , Manchester , M13 9PL , U.K
| | | | - Ercin Duran
- School of Materials , University of Manchester , Manchester , M13 9PL , U.K
| | - Demie M Kepaptsoglou
- SuperSTEM Laboratory , STFC Daresbury Campus , Daresbury WA4 4AD , U.K
- Jeol Nanocentre and Department of Physics , University of York , Heslington, York YO10 5DD , U.K
| | | | - Quentin M Ramasse
- SuperSTEM Laboratory , STFC Daresbury Campus , Daresbury WA4 4AD , U.K
- School of Chemical and Process Engineering and School of Physics , University of Leeds , Leeds LS2 9JT , U.K
| | - Robert Freer
- School of Materials , University of Manchester , Manchester , M13 9PL , U.K
| |
Collapse
|
17
|
Gao L, Wang S, Liu R, Zha X, Sun N, Wang S, Wang J, Fu G. Enhanced thermoelectric performance of CdO : Ag nanocomposites. Dalton Trans 2018; 45:12215-20. [PMID: 27411573 DOI: 10.1039/c6dt02348g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CdO : Ag nanocomposites with metallic Ag nanoparticles embedded in the polycrystalline CdO matrix were synthesized by the solid-state reaction method. The addition of Ag led to increased grain boundaries of CdO and created numerous CdO/Ag interfaces. By incorporating Ag into the CdO matrix, the power factor was increased which was probably due to the carrier energy filtering effect induced by the enhanced energy-dependent scattering of electrons. In addition, reduced thermal conductivity was also achieved by stronger phonon scattering from grain boundaries, CdO/Ag interfaces and Ag nanoparticles. These concomitant effects resulted in enhanced ZT values for all CdO : Ag nanocomposites, demonstrating that the strategy of introducing metallic Ag nanoparticles into the CdO host was very effective in optimizing the thermoelectric performance.
Collapse
Affiliation(s)
- Linjie Gao
- Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
| | - Shufang Wang
- Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
| | - Ran Liu
- Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
| | - Xinyu Zha
- Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
| | - Niefeng Sun
- National Key Laboratory of ASIC, Hebei Semiconductor Research Institute, Shijiazhuang, 050051, China
| | - Shujie Wang
- National Key Laboratory of ASIC, Hebei Semiconductor Research Institute, Shijiazhuang, 050051, China
| | - Jianglong Wang
- Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
| | - Guangsheng Fu
- Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology, Hebei University, Baoding, 071002, China.
| |
Collapse
|
18
|
Kepaptsoglou D, Baran JD, Azough F, Ekren D, Srivastava D, Molinari M, Parker SC, Ramasse QM, Freer R. Prospects for Engineering Thermoelectric Properties in La 1/3NbO 3 Ceramics Revealed via Atomic-Level Characterization and Modeling. Inorg Chem 2017; 57:45-55. [PMID: 29257680 DOI: 10.1021/acs.inorgchem.7b01584] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A combination of experimental and computational techniques has been employed to explore the crystal structure and thermoelectric properties of A-site-deficient perovskite La1/3NbO3 ceramics. Crystallographic data from X-ray and electron diffraction confirmed that the room temperature structure is orthorhombic with Cmmm as a space group. Atomically resolved imaging and analysis showed that there are two distinct A sites: one is occupied with La and vacancies, and the second site is fully unoccupied. The diffuse superstructure reflections observed through diffraction techniques are shown to originate from La vacancy ordering. La1/3NbO3 ceramics sintered in air showed promising high-temperature thermoelectric properties with a high Seebeck coefficient of S1 = -650 to -700 μV/K and a low and temperature-stable thermal conductivity of k = 2-2.2 W/m·K in the temperature range of 300-1000 K. First-principles electronic structure calculations are used to link the temperature dependence of the Seebeck coefficient measured experimentally to the evolution of the density of states with temperature and indicate possible avenues for further optimization through electron doping and control of the A-site occupancies. Moreover, lattice thermal conductivity calculations give insights into the dependence of the thermal conductivity on specific crystallographic directions of the material, which could be exploited via nanostructuring to create high-efficiency compound thermoelectrics.
Collapse
Affiliation(s)
| | - Jakub D Baran
- Department of Chemistry, University of Bath , Claverton Down, Bath BA2 7AY, U.K
| | - Feridoon Azough
- School of Materials, University of Manchester , Manchester M13 9PL, U.K
| | - Dursun Ekren
- School of Materials, University of Manchester , Manchester M13 9PL, U.K
| | | | - Marco Molinari
- Department of Chemistry, University of Bath , Claverton Down, Bath BA2 7AY, U.K.,Department of Chemistry, University of Huddersfield , Huddersfield HD1 3DH, U.K
| | - Stephen C Parker
- Department of Chemistry, University of Bath , Claverton Down, Bath BA2 7AY, U.K
| | - Quentin M Ramasse
- SuperSTEM Laboratory, SciTech Daresbury Campus , Daresbury WA4 4AD, U.K
| | - Robert Freer
- School of Materials, University of Manchester , Manchester M13 9PL, U.K
| |
Collapse
|
19
|
Xiao X, Widenmeyer M, Xie W, Zou T, Yoon S, Scavini M, Checchia S, Zhong Z, Hansmann P, Kilper S, Kovalevsky A, Weidenkaff A. Tailoring the structure and thermoelectric properties of BaTiO3via Eu2+ substitution. Phys Chem Chem Phys 2017; 19:13469-13480. [DOI: 10.1039/c7cp00020k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The presence of filled Eu2+ 4f states at the top of the valence band significantly affect the electrical transport properties of Ba1−xEuxTiO3−δ compounds.
Collapse
Affiliation(s)
- Xingxing Xiao
- University of Stuttgart
- Institute for Materials Science
- 70569 Stuttgart
- Germany
| | - Marc Widenmeyer
- University of Stuttgart
- Institute for Materials Science
- 70569 Stuttgart
- Germany
| | - Wenjie Xie
- University of Stuttgart
- Institute for Materials Science
- 70569 Stuttgart
- Germany
| | - Tianhua Zou
- University of Stuttgart
- Institute for Materials Science
- 70569 Stuttgart
- Germany
| | - Songhak Yoon
- University of Stuttgart
- Institute for Materials Science
- 70569 Stuttgart
- Germany
| | - Marco Scavini
- University of Milan
- Chemistry Department
- I-20133 Milano
- Italy
- CNR-ISTM
| | | | - Zhicheng Zhong
- Max Planck Institute for Solid State Research
- 70569 Stuttgart
- Germany
| | - Philipp Hansmann
- Max Planck Institute for Solid State Research
- 70569 Stuttgart
- Germany
| | - Stefan Kilper
- University of Stuttgart
- Institute for Materials Science
- 70569 Stuttgart
- Germany
| | - Andrei Kovalevsky
- CICECO – Aveiro Institute of Materials
- University of Aveiro
- Department of Materials and Ceramic Engineering
- 3810-193 Aveiro
- Portugal
| | - Anke Weidenkaff
- University of Stuttgart
- Institute for Materials Science
- 70569 Stuttgart
- Germany
| |
Collapse
|
20
|
Drożdż E, Koleżyński A. The structure, electrical properties and chemical stability of porous Nb-doped SrTiO3 – experimental and theoretical studies. RSC Adv 2017. [DOI: 10.1039/c7ra04205a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
This work fills the significant gap in literature on chemical stability, electrical properties and electronic structure of Nb-doped SrTiO3 system.
Collapse
Affiliation(s)
- Ewa Drożdż
- AGH University of Science and Technology
- Faculty of Materials Science and Ceramics
- 30-059 Kraków
- Poland
| | - Andrzej Koleżyński
- AGH University of Science and Technology
- Faculty of Materials Science and Ceramics
- 30-059 Kraków
- Poland
| |
Collapse
|
21
|
Bala M, Gupta S, Srivastava SK, Amrithapandian S, Tripathi TS, Tripathi SK, Dong CL, Chen CL, Avasthi DK, Asokan K. Evolution of nanostructured single-phase CoSb3 thin films by low-energy ion beam induced mixing and their thermoelectric performance. Phys Chem Chem Phys 2017; 19:24886-24895. [DOI: 10.1039/c7cp03527f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report that a nanostructured CoSb3 thin film in a single phase can be synthesized by ion beam processing of Co/Sb bilayer thin films with better thermoelectric properties.
Collapse
Affiliation(s)
- Manju Bala
- Inter-University Accelerator Centre
- Aruna Asaf Ali Marg
- New Delhi-110067
- India
- Department of Physics & Astrophysics
| | - Srashti Gupta
- Department of Physics & Astrophysics
- Delhi University 110007
- India
| | | | | | | | | | | | - Chi-Liang Chen
- National Synchrotron Radiation Research Centre
- Hsinhu
- Taiwan
| | | | - Kandasami Asokan
- Inter-University Accelerator Centre
- Aruna Asaf Ali Marg
- New Delhi-110067
- India
| |
Collapse
|
22
|
An enhanced thermoelectric figure of merit for Sr(Ti0.8Nb0.2)O3 based on a Ruddlesden–Popper-polytype-induced microstructure. Ann Ital Chir 2016. [DOI: 10.1016/j.jeurceramsoc.2015.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
23
|
Crespillo ML, Graham JT, Zhang Y, Weber WJ. Temperature measurements during high flux ion beam irradiations. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2016; 87:024902. [PMID: 26931879 DOI: 10.1063/1.4941720] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A systematic study of the ion beam heating effect was performed in a temperature range of -170 to 900 °C using a 10 MeV Au(3+) ion beam and a Yttria stabilized Zirconia (YSZ) sample at a flux of 5.5 × 10(12) cm(-2) s(-1). Different geometric configurations of beam, sample, thermocouple positioning, and sample holder were compared to understand the heat/charge transport mechanisms responsible for the observed temperature increase. The beam heating exhibited a strong dependence on the background (initial) sample temperature with the largest temperature increases occurring at cryogenic temperatures and decreasing with increasing temperature. Comparison with numerical calculations suggests that the observed heating effect is, in reality, a predominantly electronic effect and the true temperature rise is small. A simple model was developed to explain this electronic effect in terms of an electrostatic potential that forms during ion irradiation. Such an artificial beam heating effect is potentially problematic in thermostated ion irradiation and ion beam analysis apparatus, as the operation of temperature feedback systems can be significantly distorted by this effect.
Collapse
Affiliation(s)
- M L Crespillo
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - J T Graham
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Y Zhang
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - W J Weber
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| |
Collapse
|
24
|
Zhang L, Lü TY, Wang HQ, Zhang WX, Yang SW, Zheng JC. First principles studies on the thermoelectric properties of (SrO)m(SrTiO3)n superlattice. RSC Adv 2016. [DOI: 10.1039/c6ra19661f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The electronic structures and thermoelectric properties of (SrO)m(SrTiO3)n superlattices have been investigated using first-principles calculations and the Boltzmann transport theory.
Collapse
Affiliation(s)
- Liang Zhang
- Department of Physics
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices
- Xiamen University
- Xiamen 361005
- China
| | - Tie-Yu Lü
- Department of Physics
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices
- Xiamen University
- Xiamen 361005
- China
| | - Hui-Qiong Wang
- Department of Physics
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices
- Xiamen University
- Xiamen 361005
- China
| | - Wen-Xing Zhang
- Institute of High Performance Computing, Agency for Science, Technology and Research
- Singapore 138632
- Republic of Singapore
| | - Shuo-Wang Yang
- Institute of High Performance Computing, Agency for Science, Technology and Research
- Singapore 138632
- Republic of Singapore
| | - Jin-Cheng Zheng
- Department of Physics
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices
- Xiamen University
- Xiamen 361005
- China
| |
Collapse
|
25
|
Gao L, Wang S, Liu R, Zha X, Sun N, Wang S, Wang J, Fu G. Enhanced thermoelectric performance in Mg and Ca substituted CdO ceramics. RSC Adv 2016. [DOI: 10.1039/c6ra04175b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A high ZT of 0.5 at about 1000 K has been achieved in Cd0.94Mg0.03Ca0.03O, which is the highest ZT ever reported among n-type oxides in this temperature range.
Collapse
Affiliation(s)
- Linjie Gao
- Hebei Key Lab of Optic-electronic Information and Materials
- The College of Physics Science and Technology
- Hebei University
- Baoding
- China
| | - Shufang Wang
- Hebei Key Lab of Optic-electronic Information and Materials
- The College of Physics Science and Technology
- Hebei University
- Baoding
- China
| | - Ran Liu
- Hebei Key Lab of Optic-electronic Information and Materials
- The College of Physics Science and Technology
- Hebei University
- Baoding
- China
| | - Xinyu Zha
- Hebei Key Lab of Optic-electronic Information and Materials
- The College of Physics Science and Technology
- Hebei University
- Baoding
- China
| | - Niefeng Sun
- National Key Laboratory of ASIC
- Hebei Semiconductor Research Institute
- Shijiazhuang
- China
| | - Shujie Wang
- National Key Laboratory of ASIC
- Hebei Semiconductor Research Institute
- Shijiazhuang
- China
| | - Jianglong Wang
- Hebei Key Lab of Optic-electronic Information and Materials
- The College of Physics Science and Technology
- Hebei University
- Baoding
- China
| | - Guangsheng Fu
- Hebei Key Lab of Optic-electronic Information and Materials
- The College of Physics Science and Technology
- Hebei University
- Baoding
- China
| |
Collapse
|
26
|
Lin Y, Norman C, Srivastava D, Azough F, Wang L, Robbins M, Simpson K, Freer R, Kinloch IA. Thermoelectric Power Generation from Lanthanum Strontium Titanium Oxide at Room Temperature through the Addition of Graphene. ACS APPLIED MATERIALS & INTERFACES 2015; 7:15898-908. [PMID: 26095083 DOI: 10.1021/acsami.5b03522] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The applications of strontium titanium oxide based thermoelectric materials are currently limited by their high operating temperatures of >700 °C. Herein, we show that the thermal operating window of lanthanum strontium titanium oxide (LSTO) can be reduced to room temperature by the addition of a small amount of graphene. This increase in operating performance will enable future applications such as generators in vehicles and other sectors. The LSTO composites incorporated one percent or less of graphene and were sintered under an argon/hydrogen atmosphere. The resultant materials were reduced and possessed a multiphase structure with nanosized grains. The thermal conductivity of the nanocomposites decreased upon the addition of graphene, whereas the electrical conductivity and power factor both increased significantly. These factors, together with a moderate Seebeck coefficient, meant that a high power factor of ∼2500 μWm(-1)K(-2) was reached at room temperature at a loading of 0.6 wt % graphene. The highest thermoelectric figure of merit (ZT) was achieved when 0.6 wt % graphene was added (ZT = 0.42 at room temperature and 0.36 at 750 °C), with >280% enhancement compared to that of pure LSTO. A preliminary 7-couple device was produced using bismuth strontium cobalt oxide/graphene-LSTO pucks. This device had a Seebeck coefficient of ∼1500 μV/K and an open voltage of 600 mV at a mean temperature of 219 °C.
Collapse
Affiliation(s)
- Yue Lin
- †The School of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Colin Norman
- †The School of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Deepanshu Srivastava
- †The School of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Feridoon Azough
- †The School of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Li Wang
- †The School of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Mark Robbins
- ‡European Thermodynamics Ltd, 8 Priory Business Park, Kibworth, Leicester LE8 0RX, United Kingdom
| | - Kevin Simpson
- ‡European Thermodynamics Ltd, 8 Priory Business Park, Kibworth, Leicester LE8 0RX, United Kingdom
| | - Robert Freer
- †The School of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Ian A Kinloch
- †The School of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| |
Collapse
|
27
|
Thermoelectric fabrics: toward power generating clothing. Sci Rep 2015; 5:6411. [PMID: 25804132 PMCID: PMC4372730 DOI: 10.1038/srep06411] [Citation(s) in RCA: 203] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 03/02/2015] [Indexed: 12/26/2022] Open
Abstract
Herein, we demonstrate that a flexible, air-permeable, thermoelectric (TE) power generator can be prepared by applying a TE polymer (e.g. poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate)) coated commercial fabric and subsequently by linking the coated strips with a conductive connection (e.g. using fine metal wires). The poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) coated fabric shows very stable TE properties from 300 K to 390 K. The fabric device can generate a TE voltage output (V) of 4.3 mV at a temperature difference (ΔT) of 75.2 K. The potential for using fabric TE devices to harvest body temperature energy has been discussed. Fabric-based TE devices may be useful for the development of new power generating clothing and self-powered wearable electronics.
Collapse
|
28
|
Lan JL, Liu Y, Lin YH, Nan CW, Cai Q, Yang X. Enhanced thermoelectric performance of In2O3-based ceramics via Nanostructuring and Point Defect Engineering. Sci Rep 2015; 5:7783. [PMID: 25586762 PMCID: PMC5379004 DOI: 10.1038/srep07783] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Accepted: 12/15/2014] [Indexed: 11/09/2022] Open
Abstract
The issue of how to improve the thermoelectric figure of merit (ZT) in oxide semiconductors has been challenging for more than 20 years. In this work, we report an effective path to substantial reduction in thermal conductivity and increment in carrier concentration, and thus a remarkable enhancement in the ZT value is achieved. The ZT value of In2O3 system was enhanced 4-fold by nanostructuing (nano-grains and nano-inclusions) and point defect engineering. The introduction of point defects in In2O3 results in a glass-like thermal conductivity. The lattice thermal conductivity could be reduced by 60%, and extraordinary low lattice thermal conductivity (1.2 W m−1 K−1 @ 973 K) below the amorphous limit was achieved. Our work paves a path for enhancing the ZT in oxides by both the nanosturcturing and the point defect engineering for better phonon-glasses and electron-crystal (PGEC) materials.
Collapse
Affiliation(s)
- Jin-Le Lan
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Yaochun Liu
- 1] State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China [2] School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Yuan-Hua Lin
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Ce-Wen Nan
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Xiaoping Yang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| |
Collapse
|