1
|
Jana SS, Chatterjee D, Maiti T. Enhanced Thermoelectric Performance in the SrTi 0.85Nb 0.15O 3 Oxide Nanocomposite with Fe 2O 3-Functionalized Graphene. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48246-48254. [PMID: 37797267 DOI: 10.1021/acsami.3c10647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Doped SrTiO3 is considered one of the potential thermoelectric (TE) candidates but its TE figure of merit, ZT needs to be improved for practical application of electricity generation from high-grade waste-heat. In the present work, enhanced TE performance has been realized for SrTi0.85Nb0.15O3 (STN) perovskite adopting the strategy of composite formation with Fe2O3-functionalized graphene (FGR). We have achieved a maximum electrical conductivity of 1.4 × 105 S m-1 for 1 wt % FGR added to STN, which is around 1185% larger than that of pristine STN. The presence of FGR in the STN matrix acts as a mobility booster of electrons, overcoming the effect of Anderson localization of electrons, which impedes the electron transport in STN. This is evident from the order of magnitude increase in weighted mobility of STN after FGR addition. Furthermore, the incorporation of FGR causes about a 34% decrease in the lattice thermal conductivity. The Debye-Callaway model demonstrates that the phonon-phonon Umklapp scattering is primarily responsible for reduced thermal conductivity. The presence of FGR sheets along the grain boundaries of STN, Fe2O3 nanoparticles, and lattice imperfections gives rise to the glass-like temperature-independent phonon mean-free-path, especially above Debye temperature. The maximum ZT ∼ 0.57 has been obtained at 947 K for the 1 wt % FGR sample, which is around 420% higher than that of pristine STN. Furthermore, we have fabricated a prototype of a four-legged n-type TE module, demonstrating one of the highest power outputs of 18 mW among reported oxide thermoelectrics.
Collapse
Affiliation(s)
- Subhra Sourav Jana
- Plasmonics and Perovskites Laboratory, Department of Materials Science and Engineering, IIT Kanpur, Kanpur, UP 208016, India
| | - Debayan Chatterjee
- Plasmonics and Perovskites Laboratory, Department of Materials Science and Engineering, IIT Kanpur, Kanpur, UP 208016, India
| | - Tanmoy Maiti
- Plasmonics and Perovskites Laboratory, Department of Materials Science and Engineering, IIT Kanpur, Kanpur, UP 208016, India
| |
Collapse
|
2
|
Massetti M, Jiao F, Ferguson AJ, Zhao D, Wijeratne K, Würger A, Blackburn JL, Crispin X, Fabiano S. Unconventional Thermoelectric Materials for Energy Harvesting and Sensing Applications. Chem Rev 2021; 121:12465-12547. [PMID: 34702037 DOI: 10.1021/acs.chemrev.1c00218] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Heat is an abundant but often wasted source of energy. Thus, harvesting just a portion of this tremendous amount of energy holds significant promise for a more sustainable society. While traditional solid-state inorganic semiconductors have dominated the research stage on thermal-to-electrical energy conversion, carbon-based semiconductors have recently attracted a great deal of attention as potential thermoelectric materials for low-temperature energy harvesting, primarily driven by the high abundance of their atomic elements, ease of processing/manufacturing, and intrinsically low thermal conductivity. This quest for new materials has resulted in the discovery of several new kinds of thermoelectric materials and concepts capable of converting a heat flux into an electrical current by means of various types of particles transporting the electric charge: (i) electrons, (ii) ions, and (iii) redox molecules. This has contributed to expanding the applications envisaged for thermoelectric materials far beyond simple conversion of heat into electricity. This is the motivation behind this review. This work is divided in three sections. In the first section, we present the basic principle of the thermoelectric effects when the particles transporting the electric charge are electrons, ions, and redox molecules and describe the conceptual differences between the three thermodiffusion phenomena. In the second section, we review the efforts made on developing devices exploiting these three effects and give a thorough understanding of what limits their performance. In the third section, we review the state-of-the-art thermoelectric materials investigated so far and provide a comprehensive understanding of what limits charge and energy transport in each of these classes of materials.
Collapse
Affiliation(s)
- Matteo Massetti
- Department of Science and Technology, Linköping University, SE-60174 Norrköping, Sweden
| | - Fei Jiao
- Department of Science and Technology, Linköping University, SE-60174 Norrköping, Sweden.,Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Sciences, Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Andrew J Ferguson
- National Renewable Energy Laboratory, Golden, Colorado, 80401 United States
| | - Dan Zhao
- Department of Science and Technology, Linköping University, SE-60174 Norrköping, Sweden
| | - Kosala Wijeratne
- Department of Science and Technology, Linköping University, SE-60174 Norrköping, Sweden
| | - Alois Würger
- Laboratoire Ondes et Matière d'Aquitaine, Université de Bordeaux, 351 cours de la Libération, F-33405 Talence Cedex, France
| | | | - Xavier Crispin
- Department of Science and Technology, Linköping University, SE-60174 Norrköping, Sweden
| | - Simone Fabiano
- Department of Science and Technology, Linköping University, SE-60174 Norrköping, Sweden
| |
Collapse
|
3
|
Shrivastava M, Ramgopal Rao V. A Roadmap for Disruptive Applications and Heterogeneous Integration Using Two-Dimensional Materials: State-of-the-Art and Technological Challenges. NANO LETTERS 2021; 21:6359-6381. [PMID: 34342450 DOI: 10.1021/acs.nanolett.1c00729] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This Mini Review attempts to establish a roadmap for two-dimensional (2D) material-based microelectronic technologies for future/disruptive applications with a vision for the semiconductor industry to enable a universal technology platform for heterogeneous integration. The heterogeneous integration would involve integrating orthogonal capabilities, such as different forms of computing (classical, neuromorphic, and quantum), all forms of sensing, digital and analog memories, energy harvesting, and so forth, all in a single chip using a universal technology platform. We have reviewed the state-of-the-art 2D materials such as graphene, transition metal dichalcogenides, phosphorene and hexagonal boron nitride, and so forth, and how they offer unique possibilities for a range of futuristic/disruptive applications. Besides, we have discussed the technological and fundamental challenges in enabling such a universal technology platform, where the world stands today, and what gaps are required to be filled.
Collapse
Affiliation(s)
- Mayank Shrivastava
- Department of Electronic Systems Engineering, Indian Institute of Science, Bangalore 560012, India
| | - V Ramgopal Rao
- Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai 40076, India
| |
Collapse
|
4
|
Lin Y, Tian Y, Sun H, Hagio T. Progress in modifications of 3D graphene-based adsorbents for environmental applications. CHEMOSPHERE 2021; 270:129420. [PMID: 33423000 DOI: 10.1016/j.chemosphere.2020.129420] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/20/2020] [Accepted: 12/22/2020] [Indexed: 06/12/2023]
Abstract
3D graphene-based materials are promising adsorbents for environmental applications. Furthermore, increasing attention has been paid to the improvement of 3D graphene adsorbents for removing pollutants. In this article, the progress in the modification of 3D graphene materials and their performance for removing pollutants were reviewed. The modification strategies, which were classified as (1) the activation with CO2 (steam and other oxidants) and (2) the surface functionalization with polymers (metals, and metal oxides), were evaluated. The performances of modified 3D graphene materials were assessed for the removal of waste gases (such as CO2), refractory organics, and heavy metals. The challenges and future research directions were discussed for the environmental applications of 3D graphene materials.
Collapse
Affiliation(s)
- Yan Lin
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Yanqin Tian
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Hefei Sun
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
| | - Takeshi Hagio
- Institute of Materials Innovation, Institutes of Innovation for Future Society, Nagoya University, Nagoya, Japan.
| |
Collapse
|
5
|
Li D, Gong Y, Chen Y, Lin J, Khan Q, Zhang Y, Li Y, Zhang H, Xie H. Recent Progress of Two-Dimensional Thermoelectric Materials. NANO-MICRO LETTERS 2020; 12:36. [PMID: 34138247 PMCID: PMC7770719 DOI: 10.1007/s40820-020-0374-x] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 12/24/2019] [Indexed: 05/04/2023]
Abstract
Thermoelectric generators have attracted a wide research interest owing to their ability to directly convert heat into electrical power. Moreover, the thermoelectric properties of traditional inorganic and organic materials have been significantly improved over the past few decades. Among these compounds, layered two-dimensional (2D) materials, such as graphene, black phosphorus, transition metal dichalcogenides, IVA-VIA compounds, and MXenes, have generated a large research attention as a group of potentially high-performance thermoelectric materials. Due to their unique electronic, mechanical, thermal, and optoelectronic properties, thermoelectric devices based on such materials can be applied in a variety of applications. Herein, a comprehensive review on the development of 2D materials for thermoelectric applications, as well as theoretical simulations and experimental preparation, is presented. In addition, nanodevice and new applications of 2D thermoelectric materials are also introduced. At last, current challenges are discussed and several prospects in this field are proposed.
Collapse
Affiliation(s)
- Delong Li
- Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Institute of Microscale Optoelectronics, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China
| | - Youning Gong
- Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Institute of Microscale Optoelectronics, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China
| | - Yuexing Chen
- Shenzhen Key Laboratory of Advanced Thin Films and Applications, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China
| | - Jiamei Lin
- Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Institute of Microscale Optoelectronics, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China
| | - Qasim Khan
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON, Canada
| | - Yupeng Zhang
- Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Institute of Microscale Optoelectronics, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China.
| | - Yu Li
- Shenzhen Key Laboratory of Special Functional Materials, Shenzhen Engineering Laboratory for Advanced Technology of Ceramics, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China.
| | - Han Zhang
- Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Institute of Microscale Optoelectronics, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China.
| | - Heping Xie
- Shenzhen Clean Energy Research Institute, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China
| |
Collapse
|
6
|
Designing a highly efficient graphene quantum spin heat engine. Sci Rep 2019; 9:6018. [PMID: 30979964 PMCID: PMC6461677 DOI: 10.1038/s41598-019-42279-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 03/28/2019] [Indexed: 11/10/2022] Open
Abstract
We design a quantum spin heat engine using spin polarized ballistic modes generated in a strained graphene monolayer doped with a magnetic impurity. We observe remarkably large efficiency and large thermoelectric figure of merit both for the charge as well as spin variants of the quantum heat engine. This suggests the use of this device as a highly efficient quantum heat engine for charge as well as spin based transport. Further, a comparison is drawn between the device characteristics of a graphene spin heat engine against a quantum spin Hall heat engine. The reason being edge modes because of their origin should give much better performance. In this respect we observe our graphene based spin heat engine can almost match the performance characteristics of a quantum spin Hall heat engine. Finally, we show that a pure spin current can be transported in our device in absence of any charge current.
Collapse
|
7
|
Low Lattice Thermal Conductivity of a Two-Dimensional Phosphorene Oxide. Sci Rep 2019; 9:5149. [PMID: 30914726 PMCID: PMC6435745 DOI: 10.1038/s41598-019-41696-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 03/14/2019] [Indexed: 11/29/2022] Open
Abstract
A fundamental understanding of the phonon transport mechanism is important for optimizing the efficiency of thermoelectric devices. In this study, we investigate the thermal transport properties of the oxidized form of phosphorene called phosphorene oxide (PO) by solving phonon Boltzmann transport equation based on first-principles density functional theory. We reveal that PO exhibits a much lower thermal conductivity (2.42–7.08 W/mK at 300 K) than its pristine counterpart as well as other two-dimensional materials. To comprehend the physical origin of such low thermal conductivity, we scrutinize the contribution of each phonon branch to the thermal conductivity by evaluating various mode-dependent quantities including Grüneisen parameters, anharmonic three-phonon scattering rate, and phase space of three-phonon scattering processes. Our results show that its flexible puckered structure of PO leads to smaller sound velocities; its broken-mirror symmetry allows more ZA phonon scattering; and the relatively-free vibration of dangling oxygen atoms in PO gives rise to additional scattering resulting in further reduction in the phonon lifetime. These results can be verified by the fact that PO has larger phase space for three-phonon processes than phosphorene. Furthermore we show that the thermal conductivity of PO can be optimized by controlling its size or its phonon mean free path, indicating that PO can be a promising candidate for low-dimensional thermoelectric devices.
Collapse
|
8
|
Chen S, Yang M, Liu B, Xu M, Zhang T, Zhuang B, Ding D, Huai X, Zhang H. Enhanced thermal conductance at the graphene–water interface based on functionalized alkane chains. RSC Adv 2019; 9:4563-4570. [PMID: 35520161 PMCID: PMC9060609 DOI: 10.1039/c8ra09879d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 06/17/2019] [Accepted: 01/24/2019] [Indexed: 11/30/2022] Open
Abstract
Highly efficient thermal transport between graphene and water is crucial in applications such as microscopic heat dissipation, solar steam generation, sea-water desalination, and thermally conductive composites. However, a practical approach for enhancing thermal transport across graphene–water interfaces is lacking. We propose an effective and universal method to improve thermal-transport properties at the interface between multilayer graphene and water by a factor of ∼4 by grafting functionalized groups onto graphene. The most improved interfacial thermal conductance was 121.0 ± 11.4 MW m−2 K−1. This design is compatible with industrial processes. We also undertook molecular-level analyses to unveil the underlying mechanism for heat-transport enhancement. This study could provide new approaches for engineering heat transport across two-dimensional materials and water interfaces. This work demonstrates an effective and universal method to improve thermal transport properties on the interface between multilayer graphene and water by a factor of ~4 via grafting functionalized groups on graphene.![]()
Collapse
Affiliation(s)
- Shuyu Chen
- Institute of Engineering Thermophysics
- Chinese Academy of Sciences
- Beijing 100190
- China
- University of Chinese Academy of Sciences
| | - Ming Yang
- Institute of Engineering Thermophysics
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Bin Liu
- Institute of Engineering Thermophysics
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Min Xu
- Institute of Engineering Thermophysics
- Chinese Academy of Sciences
- Beijing 100190
- China
| | | | - Bilin Zhuang
- Institute of High Performance Computing
- A*STAR Research Entities
- Singapore 138632
| | - Ding Ding
- Institute of Materials Research and Engineering
- A*STAR Research Entities
- Singapore 138634
| | - Xiulan Huai
- Institute of Engineering Thermophysics
- Chinese Academy of Sciences
- Beijing 100190
- China
- University of Chinese Academy of Sciences
| | - Hang Zhang
- Institute of Engineering Thermophysics
- Chinese Academy of Sciences
- Beijing 100190
- China
- University of Chinese Academy of Sciences
| |
Collapse
|
9
|
Zhou Z, Fan D, Liu H. Realizing high thermoelectric performance with comparable p- and n-type figure-of-merits in a graphene/h-BN superlattice monolayer. Phys Chem Chem Phys 2019; 21:26630-26636. [DOI: 10.1039/c9cp05762e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate that the superlattice monolayer consisting of light, earth-abundant, and environmentally friendly elements can be designed as perfect TE modules with comparable p- and n-type energy conversion efficiency.
Collapse
Affiliation(s)
- Zizhen Zhou
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology
- Wuhan University
- Wuhan 430072
- China
| | - Dengdong Fan
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology
- Wuhan University
- Wuhan 430072
- China
| | - Huijun Liu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education and School of Physics and Technology
- Wuhan University
- Wuhan 430072
- China
| |
Collapse
|
10
|
Ali M, Pi X, Liu Y, Yang D. Electronic and thermoelectric properties of atomically thin C 3Si 3/C and C 3Ge 3/C superlattices. NANOTECHNOLOGY 2018; 29:045402. [PMID: 29272254 DOI: 10.1088/1361-6528/aa9ebb] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The nanostructuring of graphene into superlattices offers the possibility of tuning both the electronic and thermal properties of graphene. Using classical and quantum mechanical calculations, we have investigated the electronic and thermoelectric properties of the atomically thin superlattice of C3Si3/C (C3Ge3/C) formed by the incorporation of Si (Ge) atoms into graphene. The bandgap and phonon thermal conductivity of C3Si3/C (C3Ge3/C) are 0.54 (0.51) eV and 15.48 (12.64) W m-1 K-1, respectively, while the carrier mobility of C3Si3/C (C3Ge3/C) is 1.285 × 105 (1.311 × 105) cm2 V-1 s-1 at 300 K. The thermoelectric figure of merit for C3Si3/C (C3Ge3/C) can be optimized via the tuning of carrier concentration to obtain the prominent ZT value of 1.95 (2.72).
Collapse
Affiliation(s)
- Muhammad Ali
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China. Department of Physics, COMSATS Institute of Information Technology, Islamabad 46000, Pakistan
| | | | | | | |
Collapse
|
11
|
Mani A, Benjamin C. Strained-graphene-based highly efficient quantum heat engine operating at maximum power. Phys Rev E 2018; 96:032118. [PMID: 29346913 DOI: 10.1103/physreve.96.032118] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Indexed: 11/07/2022]
Abstract
A strained graphene monolayer is shown to operate as a highly efficient quantum heat engine delivering maximum power. The efficiency and power of the proposed device exceeds that of recent proposals. The reason for these excellent characteristics is that strain enables complete valley separation in transmittance through the device, implying that increasing strain leads to very high Seebeck coefficient as well as lower conductance. In addition, since time-reversal symmetry is unbroken in our system, the proposed strained graphene quantum heat engine can also act as a high-performance refrigerator.
Collapse
Affiliation(s)
- Arjun Mani
- School of Physical Sciences, National Institute of Science Education & Research, HBNI, Jatni-752050, India
| | - Colin Benjamin
- School of Physical Sciences, National Institute of Science Education & Research, HBNI, Jatni-752050, India
| |
Collapse
|
12
|
Li H, Grossman JC. Graphene Nanoribbon Based Thermoelectrics: Controllable Self- Doping and Long-Range Disorder. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2017; 4:1600467. [PMID: 28852610 PMCID: PMC5566246 DOI: 10.1002/advs.201600467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 12/16/2016] [Indexed: 06/07/2023]
Abstract
Control of both the regularity of a material ensemble and nanoscale architecture provides unique opportunities to develop novel thermoelectric applications based on 2D materials. As an example, the authors explore the electronic and thermal properties of functionalized graphene nanoribbons (GNRs) in the single-sheet and helical architectures using multiscale simulations. The results suggest that appropriate functionalization enables precise tuning of the doping density in a planar donor/acceptor GNR ensemble without the need to introduce an explicit dopant, which is critical to the optimization of power factor. In addition, the self-interaction between turns of a GNR may induce long-range disorder along the helical axis, which suppresses the thermal contribution from phonons with long wavelengths, leading to anomalous length independent phonon thermal transport in the quasi-1D system.
Collapse
Affiliation(s)
- Huashan Li
- Department of Materials Science and EngineeringMassachusetts Institute of Technology02139CambridgeMAUSA
| | - Jeffrey C. Grossman
- Department of Materials Science and EngineeringMassachusetts Institute of Technology02139CambridgeMAUSA
| |
Collapse
|
13
|
Plšek J, Kovaříček P, Valeš V, Kalbáč M. Tuning the Reactivity of Graphene by Surface Phase Orientation. Chemistry 2017; 23:1839-1845. [PMID: 27911050 DOI: 10.1002/chem.201604311] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Indexed: 11/11/2022]
Abstract
Tuning the local reactivity of graphene is a subject of paramount importance. Among the available strategies, the activation/passivation of graphene by copper substrate is very promising because it enables the properties of graphene to be influenced without any transfer procedure, since graphene can be grown directly on copper. Herein, it is demonstrated that the reactivity of graphene towards fluorination is strongly influenced by the face of the surface of the copper substrate. Graphene on the copper foil was probed and grain orientations were identified. The results of the reactivity were evaluated by means of X-ray photo electron and Raman spectroscopy. Graphene on the grains with a surface orientation close to the (111) face is the most reactive, whereas graphene on the grains close to the (110) surface is least reactive. The long-term stability test showed that the decomposition of fluorinated graphene was slowest on the grains with a surface orientation close to the (111) face. The results are consistent with the variation of the mechanical strain of graphene on different faces of copper. In contrast, no clear correlation of the graphene reactivity with doping induced by different facets was found.
Collapse
Affiliation(s)
- Jan Plšek
- Department of Low-Dimensional Systems, J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 18223, Prague 8, Czech Republic
| | - Petr Kovaříček
- Department of Low-Dimensional Systems, J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 18223, Prague 8, Czech Republic
| | - Václav Valeš
- Department of Low-Dimensional Systems, J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 18223, Prague 8, Czech Republic
| | - Martin Kalbáč
- Department of Low-Dimensional Systems, J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 18223, Prague 8, Czech Republic
| |
Collapse
|
14
|
Zhang Z, Xie Y, Peng Q, Chen Y. Phonon transport in single-layer boron nanoribbons. NANOTECHNOLOGY 2016; 27:445703. [PMID: 27669055 DOI: 10.1088/0957-4484/27/44/445703] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Inspired by the successful synthesis of three two-dimensional (2D) allotropes, the boron sheet has recently been one of the hottest 2D materials around. However, to date, phonon transport properties of these new materials are still unknown. By using the non-equilibrium Green's function (NEGF) combined with the first principles method, we study ballistic phonon transport in three types of boron sheets; two of them correspond to the structures reported in the experiments, while the third one is a stable structure that has not been synthesized yet. At room temperature, the highest thermal conductance of the boron nanoribbons is comparable with that of graphene, while the lowest thermal conductance is less than half of graphene's. Compared with graphene, the three boron sheets exhibit diverse anisotropic transport characteristics. With an analysis of phonon dispersion, bonding charge density, and simplified models of atomic chains, the mechanisms of the diverse phonon properties are discussed. Moreover, we find that many hybrid patterns based on the boron allotropes can be constructed naturally without doping, adsorption, and defects. This provides abundant nanostructures for thermal management and thermoelectric applications.
Collapse
Affiliation(s)
- Zhongwei Zhang
- Department of Physics, Xiangtan University, Xiangtan 411105, Hunan, People's Republic of China
| | | | | | | |
Collapse
|
15
|
Phonon thermal properties of graphene from molecular dynamics using different potentials. J Chem Phys 2016; 145:134705. [DOI: 10.1063/1.4963918] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
16
|
Zhu T, Ertekin E. Phonons, Localization, and Thermal Conductivity of Diamond Nanothreads and Amorphous Graphene. NANO LETTERS 2016; 16:4763-4772. [PMID: 27388115 DOI: 10.1021/acs.nanolett.6b00557] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Recently, the domains of low-dimensional (low-D) materials and disordered materials have been brought together by the demonstration of several new low-D, disordered systems. The thermal transport properties of these systems are not well-understood. Using amorphous graphene and glassy diamond nanothreads as prototype systems, we establish how structural disorder affects vibrational energy transport in low-dimensional, but disordered, materials. Modal localization analysis, molecular dynamics simulations, and a generalized model together demonstrate that the thermal transport properties of these materials exhibit both similarities and differences from disordered 3D materials. In analogy with 3D, the low-D disordered systems exhibit both propagating and diffusive vibrational modes. In contrast to 3D, however, the diffuson contribution to thermal transport in these low-D systems is shown to be negligible, which may be a result of inherent differences in the nature of random walks in lower dimensions. Despite the lack of diffusons, the suppression of thermal conductivity due to disorder in low-D systems is shown to be mild or comparable to 3D. The mild suppression originates from the presence of low-frequency vibrational modes that maintain a well-defined polarization and help preserve the thermal conductivity in the presence of disorder.
Collapse
Affiliation(s)
- Taishan Zhu
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign , 1206 W Green Street, Urbana Illinois 61801, United States
| | - Elif Ertekin
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign , 1206 W Green Street, Urbana Illinois 61801, United States
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University , 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| |
Collapse
|
17
|
Kim JY, Grossman JC. Optimization of the Thermoelectric Figure of Merit in Crystalline C60 with Intercalation Chemistry. NANO LETTERS 2016; 16:4203-4209. [PMID: 27322341 DOI: 10.1021/acs.nanolett.6b01073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Crystalline C60 is an appealing candidate material for thermoelectric (TE) applications due to its extremely low thermal conductivity and potentially high electrical conductivity with metal atom intercalation. We investigate the TE properties of crystalline C60 intercalated with alkali and alkaline earth metals using both classical and quantum mechanical calculations. For the electronic structure, our results show that variation of intercalated metal atoms has a large impact on energy dispersions, which leads to broad tunability of the power factor. For the thermal transport, we show that dopants introduce strong phonon scattering into crystalline C60, leading to considerably lower thermal conductivity. Taking both into account, our calculations suggest that appropriate choice of metal atom intercalation in crystalline C60 could yield figures of merit near 1 at room temperature.
Collapse
Affiliation(s)
- Jeong Yun Kim
- Department of Materials Science and Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Jeffrey C Grossman
- Department of Materials Science and Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| |
Collapse
|
18
|
Wen J, Luo D, Cheng L, Zhao K, Ma H. Electronic Structure Properties of Two-Dimensional π-Conjugated Polymers. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02572] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jing Wen
- Key
Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation
Center of Chemistry for Life Sciences, School of Chemistry and Chemical
Engineering, Nanjing University, No. 163 Xianlin Avenue, Nanjing 210023, China
| | - Ding Luo
- Key
Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation
Center of Chemistry for Life Sciences, School of Chemistry and Chemical
Engineering, Nanjing University, No. 163 Xianlin Avenue, Nanjing 210023, China
| | - Lin Cheng
- State Grid Electric
Power Research Institute, Wuhan 430074, China
| | - Kun Zhao
- State Grid Electric
Power Research Institute, Wuhan 430074, China
| | - Haibo Ma
- Key
Laboratory of Mesoscopic Chemistry of MOE, Collaborative Innovation
Center of Chemistry for Life Sciences, School of Chemistry and Chemical
Engineering, Nanjing University, No. 163 Xianlin Avenue, Nanjing 210023, China
| |
Collapse
|
19
|
Ferreira FV, Cividanes LDS, Brito FS, de Menezes BRC, Franceschi W, Simonetti EAN, Thim GP. Functionalization of Graphene and Applications. FUNCTIONALIZING GRAPHENE AND CARBON NANOTUBES 2016. [DOI: 10.1007/978-3-319-35110-0_1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
|