1
|
Zhang M, Cao X, Wen M, Chen C, Wen Q, Fu Q, Deng H. Highly Electrical Conductive PEDOT:PSS/SWCNT Flexible Thermoelectric Films Fabricated by a High-Velocity Non-solvent Turbulent Secondary Doping Approach. ACS APPLIED MATERIALS & INTERFACES 2023; 15:10947-10957. [PMID: 36797207 DOI: 10.1021/acsami.2c21025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Materials based on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) can be potentially employed as flexible thermoelectric generators (TEGs) to capture waste heat and generate electrical energy. Among various methods, secondary doping is an effective way to modulate its thermoelectric (TE) performance. Different from conventional measures such as dropping, soaking, and steam fumigation, strong shear is integrated with the doping process and termed high-velocity non-solvent turbulent secondary doping (HNTD). We systematically investigate the transformation of PEDOT:PSS during this procedure and the formation mechanism of its highly conductive pathway. It is illustrated that PEDOT:PSS experiences PSS swelling, the phase separation of PEDOT from PSS, the removal of isolated PSS, and the evolution of PEDOT to a linear conformation. These evolutions contribute to the substantial elevation of electrical conductivity (σ). Furthermore, by employing continuous single-walled carbon nanotube (SWCNT) networks as structural units, highly conductive flexible PEDOT:PSS/SWCNT TE thin films could be prepared without sacrificing the Seebeck coefficient (S). Additionally, the effect of HNTD and direct addition method on TE properties of composite films is also compared. Finally, the PEDOT:PSS composite film with 40 wt % SWCNTs by the HNTD method exhibits the maximized power factor (PF) of 501.31 ± 19.23 μW m-1 K-2 with σ of 4717.8 ± 41.51 S cm-1 and S of 32.6 ± 0.13 μV K-1 at room temperature. It is worth mentioning that the σ value 4717.8 ± 41.51 S cm-1 is the highest among the composites based on commercial carbon fillers and organic semiconductors. Finally, a 6-leg TEGs prototype is assembled and illustrates an output power of 4.416 μW under a temperature difference (ΔT) of 58 K. It is thought that such a strategy may provide some guidelines for manufacturing PEDOT:PSS-based functional materials.
Collapse
Affiliation(s)
- Mao Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Xiaoyin Cao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Ming Wen
- Special Polymer Materials for Automobile Key Laboratory of Sichuan Province, Sichuan Chuanhuan Technology Co. Ltd., Dazhou 635100, P. R. China
| | - Chuanliang Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Qichao Wen
- Special Polymer Materials for Automobile Key Laboratory of Sichuan Province, Sichuan Chuanhuan Technology Co. Ltd., Dazhou 635100, P. R. China
| | - Qiang Fu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Hua Deng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| |
Collapse
|
2
|
Díez-Pascual AM. Environmentally Friendly Synthesis of Poly(3,4-Ethylenedioxythiophene): Poly(Styrene Sulfonate)/SnO 2 Nanocomposites. Polymers (Basel) 2021; 13:2445. [PMID: 34372048 PMCID: PMC8348352 DOI: 10.3390/polym13152445] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 07/21/2021] [Accepted: 07/22/2021] [Indexed: 11/30/2022] Open
Abstract
Conductive poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is widely used for practical applications such as energy conversion and storage devices owing to its good flexibility, processability, high electrical conductivity, and superior optical transparency, among others. However, its hygroscopic character, short durability, and poor thermoelectric performance compared to inorganic counterparts has greatly limited its high-tech applications. In this work, PEDOT:PSS/SnO2 nanocomposites have been prepared via a simple, low cost, environmentally friendly method without the use of organic solvents or compatibilizing agents. Their morphology, thermal, thermoelectrical, optical, and mechanical properties have been characterized. Electron microscopy analysis revealed a uniform dispersion of the SnO2 nanoparticles, and the Raman spectra revealed the existence of very strong SnO2-PEDOT:PSS interactions. The stiffness and strength of the matrix gradually increased with increasing SnO2 content, up to 120% and 65%, respectively. Moreover, the nanocomposites showed superior thermal stability (as far as 70 °C), improved electrical conductivity (up to 140%), and higher Seebeck coefficient (about 80% increase) than neat PEDOT:PSS. On the other hand, hardly any change in optical transparency was observed. These sustainable nanocomposites show considerably improved performance compared to commercial PEDOT:PSS, and can be highly useful for applications in energy storage, flexible electronics, thermoelectric devices, and related fields.
Collapse
Affiliation(s)
- Ana M Díez-Pascual
- Universidad de Alcalá, Facultad de Ciencias, Departamento de Química Analítica, Química Física e Ingeniería Química, Ctra. Madrid-Barcelona, Km. 33.6, 28805 Alcalá de Henares, Madrid, España (Spain)
| |
Collapse
|
3
|
Al Naim AF, Ibrahim SS, El-Shamy AG. New high mechanically flexible and bendable nanocomposite Ag@NCDots/PEDOT:PSS/PVA films with high thermoelectric power performance and generator. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123792] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
4
|
Chatterjee K, Ghosh TK. Thermoelectric Materials for Textile Applications. Molecules 2021; 26:3154. [PMID: 34070466 PMCID: PMC8197455 DOI: 10.3390/molecules26113154] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 11/29/2022] Open
Abstract
Since prehistoric times, textiles have served an important role-providing necessary protection and comfort. Recently, the rise of electronic textiles (e-textiles) as part of the larger efforts to develop smart textiles, has paved the way for enhancing textile functionalities including sensing, energy harvesting, and active heating and cooling. Recent attention has focused on the integration of thermoelectric (TE) functionalities into textiles-making fabrics capable of either converting body heating into electricity (Seebeck effect) or conversely using electricity to provide next-to-skin heating/cooling (Peltier effect). Various TE materials have been explored, classified broadly into (i) inorganic, (ii) organic, and (iii) hybrid organic-inorganic. TE figure-of-merit (ZT) is commonly used to correlate Seebeck coefficient, electrical and thermal conductivity. For textiles, it is important to think of appropriate materials not just in terms of ZT, but also whether they are flexible, conformable, and easily processable. Commercial TEs usually compromise rigid, sometimes toxic, inorganic materials such as bismuth and lead. For textiles, organic and hybrid TE materials are more appropriate. Carbon-based TE materials have been especially attractive since graphene and carbon nanotubes have excellent transport properties with easy modifications to create TE materials with high ZT and textile compatibility. This review focuses on flexible TE materials and their integration into textiles.
Collapse
Affiliation(s)
| | - Tushar K. Ghosh
- Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, NC 27695, USA;
| |
Collapse
|
5
|
Kausar A. Polymer/carbon nanocoil nanocomposite: status and future directions. POLYM-PLAST TECH MAT 2021. [DOI: 10.1080/25740881.2020.1867174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Ayesha Kausar
- Nanosciences Division, National Center For Physics, Quaid-i-Azam University Campus, Islamabad, Pakistan
| |
Collapse
|
6
|
Luceño-Sánchez JA, Charas A, Díez-Pascual AM. Effect of HDI-Modified GO on the Thermoelectric Performance of Poly(3,4-ethylenedioxythiophene):Poly(Styrenesulfonate) Nanocomposite Films. Polymers (Basel) 2021; 13:1503. [PMID: 34067010 PMCID: PMC8124150 DOI: 10.3390/polym13091503] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 04/26/2021] [Accepted: 05/04/2021] [Indexed: 11/16/2022] Open
Abstract
Composite films based on conducting polymers and carbon nanomaterials have attracted much attention for applications in various devices, such as chemical sensors, light-emitting diodes (LEDs), organic solar cells (OSCs), among others. Graphene oxide (GO) is an ideal filler for polymeric matrices due to its unique properties. However, GO needs to be functionalized to improve its solubility in common solvents and enable the processing by low-cost solution deposition methods. In this work, hexamethylene diisocyanate (HDI)-modified GO and its nanocomposites with poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) were developed, and their morphology, thermal, electrical, thermoelectrical and mechanical performance were characterized. The influence of the HDI functionalization degree and concentration on the nanocomposite properties were assessed. The HDI-GO increased the crystallinity, lamella stacking and interchain coupling of PEDOT:PSS chains. A strong improvement in electrical conductivity, thermal stability, Young's modulus and tensile strength was found, showing an optimum combination at 2 wt% loading. Drop and spin casting techniques were applied onto different substrates, and the results from deposition tests were analyzed by atomic force microscopy (AFM) and UV-vis spectroscopy. A number of parameters influencing the depositions process, namely solvent nature, sonication conditions and ozone plasma treatment, have been explored. This study paves the way for further research on conducting polymer/modified GO nanocomposites to optimize their composition and properties (i.e., transparency) for use in devices such as OSCs.
Collapse
Affiliation(s)
- José A. Luceño-Sánchez
- Universidad de Alcalá, Facultad de Ciencias, Departamento de Química Analítica, Química Física e Ingeniería Química, Ctra. Madrid-Barcelona Km. 33.6, 28805 Alcalá de Henares, Madrid, España (Spain);
| | - Ana Charas
- Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisbon, Portugal;
| | - Ana M. Díez-Pascual
- Universidad de Alcalá, Facultad de Ciencias, Departamento de Química Analítica, Química Física e Ingeniería Química, Ctra. Madrid-Barcelona Km. 33.6, 28805 Alcalá de Henares, Madrid, España (Spain);
| |
Collapse
|
7
|
Yan Z, Zhao Y, Liu D, Zhang Z, Zheng Y, Cui J, Zhang Y, Xue C. Thermoelectric properties of flexible PEDOT:PSS-based films tuned by SnSe via the vacuum filtration method. RSC Adv 2020; 10:43840-43846. [PMID: 35519704 PMCID: PMC9058327 DOI: 10.1039/d0ra08458a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 11/04/2020] [Indexed: 12/31/2022] Open
Abstract
In this study, flexible thermoelectric tin selenide (SnSe)/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) composite films have been fabricated by the vacuum filtration method, and their thermoelectric properties were investigated. The electrical conductivities of the composite films have a tendency to decrease with an increase in the SnSe content, while their Seebeck coefficients have an inverse tendency. The electrical conductivities decrease gradually with an increase in temperature, while the Seebeck coefficients show a tendency to increase first and then decrease with the increase in temperature. The maximum power factor (PF = S 2 σ) of the composite film is obtained when the SnSe content is 10 wt%, which is 24.42 μW m-1 K-2 at 353 K. Besides, the 10 wt% SnSe/PEDOT:PSS film exhibited excellent stability with only a 9% increase in resistance after 1000 bends under a bending radius of 4 mm. When the temperature gradient is 50 K, a flexible thermoelectric generator fabricated by 3 legs of the 10 wt% SnSe/PEDOT:PSS film has an open-circuit voltage and maximum output electrical power of 3.2 mV and 13.73 nW, respectively, which demonstrates a great potential application to power wearable flexible electronic devices.
Collapse
Affiliation(s)
- Zhuqing Yan
- Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China Taiyuan 030051 China
| | - Yaxin Zhao
- Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China Taiyuan 030051 China
| | - Dan Liu
- Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China Taiyuan 030051 China
| | - Zhidong Zhang
- Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China Taiyuan 030051 China
| | - Yongqiu Zheng
- Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China Taiyuan 030051 China
| | - Juan Cui
- Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China Taiyuan 030051 China
| | - Yanjun Zhang
- Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China Taiyuan 030051 China
| | - Chenyang Xue
- Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China Taiyuan 030051 China
| |
Collapse
|
8
|
|
9
|
Kim SI, Lee KY, Lim JH. Fabrication of PEDOT: PSS-PVP Nanofiber-Embedded Sb 2Te 3 Thermoelectric Films by Multi-Step Coating and Their Improved Thermoelectric Properties. MATERIALS 2020; 13:ma13122835. [PMID: 32599881 PMCID: PMC7345713 DOI: 10.3390/ma13122835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 11/16/2022]
Abstract
Antimony telluride thin films display intrinsic thermoelectric properties at room temperature, although their Seebeck coefficients and electrical conductivities may be unsatisfactory. To address these issues, we designed composite films containing upper and lower Sb2Te3 layers encasing conductive poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS)- polyvinylpyrrolidone(PVP) nanowires. Thermoelectric Sb2Te3/PEDOT:PSS-PVP/Sb2Te3(ED) (STPPST) hybrid composite films were prepared by a multi-step coating process involving sputtering, electrospinning, and electrodeposition stages. The STPPST hybrid composites were characterized by field-emission scanning electron microscopy, X-ray diffraction, ultraviolet photoelectron spectroscopy, and infrared spectroscopy. The thermoelectric performance of the prepared STPPST hybrid composites, evaluated in terms of the power factor, electrical conductivity and Seebeck coefficient, demonstrated enhanced thermoelectric efficiency over a reference Sb2Te3 film. The performance of the composite Sb2Te3/PEDOT:PSS-PVP/Sb2Te3 film was greatly enhanced, with σ = 365 S/cm, S = 124 μV/K, and a power factor 563 μW/mK.
Collapse
Affiliation(s)
- Sang-il Kim
- Department of Materials Science and Engineering, University of Seoul, Seoul 02504, Korea;
| | - Kang Yeol Lee
- Department of Materials Science and Engineering, Gachon University, Seoungnam 13120, Korea;
| | - Jae-Hong Lim
- Department of Materials Science and Engineering, Gachon University, Seoungnam 13120, Korea;
- Correspondence: ; Tel.: +82-31-750-5880
| |
Collapse
|
10
|
Novak TG, Kim K, Jeon S. 2D and 3D nanostructuring strategies for thermoelectric materials. NANOSCALE 2019; 11:19684-19699. [PMID: 31617541 DOI: 10.1039/c9nr07406f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Thermoelectric materials have attracted increased research attention as the implementation of various nanostructures has potential to improve both their performance and applicability. A traditional limitation of thermoelectric performance in bulk materials is the interconnected nature of the individual parameters (for example, it is difficult to decrease thermal conductivity while maintaining electrical conductivity), but through the rational design of nanoscale structures, it is possible to decouple these relationships and greatly enhance the performance. For 2D strategies, newly investigated materials such as graphene, transition metal dichalcogenides, black phosphorus, etc. are attractive thanks to not only their unique thermoelectric properties, but also potential advantages in ease of processing, flexibility, and lack of rare or toxic constituent elements. For 3D strategies, the use of induced porosity, assembly of various nanostructures, and nanoscale lithography all offer specific advantages over bulk materials of the same chemical composition, most notably decreased thermal conductivity due to phonon scattering and enhanced Seebeck coefficient due to energy filtering. In this review, a general summary of the popular techniques and strategies for 2D and 3D thermoelectric materials will be provided, along with suggestions for future research directions based on the observed trends.
Collapse
Affiliation(s)
- Travis G Novak
- Department of Materials Science and Engineering, KAIST Institute for the Nanocentury, Advanced Battery Center, KAIST, Daejeon 34141, Republic of Korea.
| | - Kisun Kim
- Department of Materials Science and Engineering, KAIST Institute for the Nanocentury, Advanced Battery Center, KAIST, Daejeon 34141, Republic of Korea.
| | - Seokwoo Jeon
- Department of Materials Science and Engineering, KAIST Institute for the Nanocentury, Advanced Battery Center, KAIST, Daejeon 34141, Republic of Korea.
| |
Collapse
|
11
|
Ju H, Kim J. Transparent and Hybrid Multilayer Films with Improved Thermoelectric Performance by Chalcogenide-Interlayer-Induced Transport Enhancement. ACS APPLIED MATERIALS & INTERFACES 2019; 11:35354-35361. [PMID: 31469533 DOI: 10.1021/acsami.9b13389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Transparent thermoelectric thin films for efficient heat energy conversion can be extensively applied in healthcare and small electronics. We report a strategy for the fabrication of organic/inorganic hybrid multilayer films with improved thermoelectric performances. As an organic layer, a highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is deposited after a solvent treatment. An inorganic interlayer consisting of PEDOT-coated SnSeTe nanosheets (PEDOT-SnSeTe nanosheets) is introduced between the PEDOT:PSS layers to fabricate an alternately deposited PEDOT:PSS/PEDOT-SnSeTe nanosheets/PEDOT:PSS (PSP) multilayer film. To demonstrate the interlayer-induced thermoelectric behaviors, the thermoelectric properties and corresponding carrier transport properties of single-layer, bilayer, and multilayer films are investigated. The inorganic layer influences the intrinsic conduction toward a favorable value for an improved thermoelectric transport. A considerably increased thermoelectric power factor of 110 μW·m-1·K-2 is achieved for a PSP multilayer film fabricated at 4000 rpm, greatly higher than that of the PEDOT:PSS and solution-mixed SnSeTe/PEDOT:PSS composite film. The multilayer strategy proposed in this study is promising for the fabrication of transparent and hybrid thin-film thermoelectrics with high thermoelectric performances.
Collapse
Affiliation(s)
- Hyun Ju
- School of Chemical Engineering & Materials Science , Chung-Ang University , Seoul 06974 , Republic of Korea
| | - Jooheon Kim
- School of Chemical Engineering & Materials Science , Chung-Ang University , Seoul 06974 , Republic of Korea
| |
Collapse
|
12
|
Mulla R, Dunnill CW. Powering the Hydrogen Economy from Waste Heat: A Review of Heat-to-Hydrogen Concepts. CHEMSUSCHEM 2019; 12:3882-3895. [PMID: 31314161 DOI: 10.1002/cssc.201901426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/16/2019] [Indexed: 06/10/2023]
Abstract
Ever-increasing energy demands and environmental concerns require new and clean energy supplies, many of which are intermittent and do not correlate with demand. To balance supply with demand, a universal energy vector should be employed such that intermittent renewable energy can be stored and transported and then used when needed. Hydrogen is the perfect universal energy vector and a possible solution that ensures environmental cleanliness, maximum utilization of renewable energy sources, and high efficiency, whereby the combustion of the fuel yields only water. One abundant and freely available energy source-both anthropogenic and natural-is heat. Heat can be obtained from industrial processes and is indeed often viewed as a waste product with a premium to remove but is notoriously difficult to capture, store, and transport. Capturing and storing low-grade heat therefore provides a significant opportunity and can be achieved by coupling thermoelectric generators and water electrolyzers. A thermoelectric generator is placed within a thermal energy gradient and produces a flow of current that is fed to the electrolysis unit with which it produces hydrogen and oxygen as the final products. The hydrogen can be stored for long periods and transported for "on-demand" use in fuel cells for electricity from hydrogen burners for a return to thermal energy. This Review summarizes the current state-of-the-art research into implementing thermoelectric generators and utilizing heat as a primary energy source to produce hydrogen, which could replace the need for extra electric power to run hydrogen production units. Furthermore, suitable requirements, modifications, and other related aspects associated with such a new and novel method of hydrogen generation are discussed. Hydrogen produced from otherwise-wasted energy sources can be considered to be green.
Collapse
Affiliation(s)
- Rafiq Mulla
- Energy Safety Research Institute, Swansea University, Bay Campus, Fabian Way, SA1 8EN, UK
| | - Charles W Dunnill
- Energy Safety Research Institute, Swansea University, Bay Campus, Fabian Way, SA1 8EN, UK
| |
Collapse
|
13
|
Ju H, Park D, Kim J. Thermoelectric enhancement in multilayer thin-films of tin chalcogenide nanosheets/conductive polymers. NANOSCALE 2019; 11:16114-16121. [PMID: 31432843 DOI: 10.1039/c9nr04712c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Te-Substituted SnSe nanosheets (Te-s-SnSe NSs) with a lateral size of ∼500 nm are fabricated and their surfaces are then coated with a poly(3,4-ethylenedioxythiophene) PEDOT nanolayer. The 3,4-ethylenedioxythiophene loading is optimized for achieving outstanding thermoelectric performance and the resulting PEDOT-coated nanosheets (PEDOT-Te-s-SnSe NSs) are alternately stacked with PEDOT:poly(styrenesulfonate) (PSS) using a solution-processable method to obtain multilayer inorganic/organic composite films. The as-fabricated multilayer films exhibit outstanding electrical conductivity and Seebeck coefficient. This is due to the enhanced interchain interaction and charge-carrier hopping of the stretched PEDOT chains as well as the presumable energy-filtering effect at the interfacial potential barriers between inorganic and organic layers. The multilayer film consisting of three-repeated stacking allows a maximum thermoelectric power factor of 222 μW m-1 K-2, which is 5.5 times larger than that achieved with pristine PEDOT:PSS. This strategy of combining inorganic and organic materials into multilayer films is promising for the achievement of high-performance thin-film thermoelectrics.
Collapse
Affiliation(s)
- Hyun Ju
- School of Chemical Engineering & Materials Science, Chung-Ang University, Seoul 06974, Republic of Korea.
| | | | | |
Collapse
|
14
|
Synthesis and Thermoelectric Properties of Selenium Nanoparticles Coated with PEDOT:PSS. Polymers (Basel) 2019; 11:polym11061052. [PMID: 31212907 PMCID: PMC6631964 DOI: 10.3390/polym11061052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 05/29/2019] [Accepted: 06/12/2019] [Indexed: 11/16/2022] Open
Abstract
We synthesized a hybrid nanocomposite comprised of selenium nanoparticles coated with a thin layer of a conductive polymer, poly(3,4-ethylenedioxythiophene), and studied its thermoelectric properties. The conductive polymer layer on the surface of nanoparticles in the composites formed a percolating network running between the stacked nanoparticles, exhibiting an electrical conductivity close to or higher than that of pure polymer. The thermoelectric power factor of the resulting composite was higher than that of individual polymer or selenium nanoparticles. We further increased the electrical conductivity of the composite by thermal annealing, thereby improving the power factor to 15 μW/cmK2 which is nine times higher than that of the polymer.
Collapse
|
15
|
Zhang Y, Heo YJ, Park M, Park SJ. Recent Advances in Organic Thermoelectric Materials: Principle Mechanisms and Emerging Carbon-Based Green Energy Materials. Polymers (Basel) 2019; 11:E167. [PMID: 30960150 PMCID: PMC6401848 DOI: 10.3390/polym11010167] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 01/09/2019] [Accepted: 01/10/2019] [Indexed: 11/16/2022] Open
Abstract
Thermoelectric devices have recently attracted considerable interest owing to their unique ability of converting heat to electrical energy in an environmentally efficient manner. These devices are promising as alternative power generators for harvesting electrical energy compared to conventional batteries. Inorganic crystalline semiconductors have dominated the thermoelectric material fields; however, their application has been restricted by their intrinsic high toxicity, fragility, and high cost. In contrast, organic thermoelectric materials with low cost, low thermal conductivity, easy processing, and good flexibility are more suitable for fabricating thermoelectric devices. In this review, we briefly introduce the parameters affecting the thermoelectric performance and summarize the most recently developed carbon-material-based organic thermoelectric composites along with their preparation technologies, thermoelectric performance, and future applications. In addition, the p- and n-type carbon nanotube conversion and existing challenges are discussed. This review can help researchers in elucidating the recent studies on carbon-based organic thermoelectric materials, thus inspiring them to develop more efficient thermoelectric devices.
Collapse
Affiliation(s)
- Yinhang Zhang
- Department of Chemistry, Inha University, 100 Inharo, Incheon 22212, Korea.
| | - Young-Jung Heo
- Department of Chemistry, Inha University, 100 Inharo, Incheon 22212, Korea.
| | - Mira Park
- Department of Bioenvironmental Chemistry, College of Agriculture & Life Science, Chonbuk National University, Jeonju 54896, Korea.
| | - Soo-Jin Park
- Department of Chemistry, Inha University, 100 Inharo, Incheon 22212, Korea.
| |
Collapse
|
16
|
Wang X, Liu P, Jiang Q, Zhou W, Xu J, Liu J, Jia Y, Duan X, Liu Y, Du Y, Jiang F. Efficient DMSO-Vapor Annealing for Enhancing Thermoelectric Performance of PEDOT:PSS-Based Aerogel. ACS APPLIED MATERIALS & INTERFACES 2019; 11:2408-2417. [PMID: 30576122 DOI: 10.1021/acsami.8b19168] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Conducting polymer-based composite aerogel film is desired to be used as thermoelectric (TE) materials due to its good flexibility and ultralow thermal conductivity. Here, we proposed the simple freeze drying method to fabricate free-standing poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT:PSS)-based aerogel films without any crosslinker addition. The evolutions of morphology and TE performance were systemically investigated with various organic solvent addition. Furthermore, a series of the PEDOT:PSS/tellurium nanowires (Te-NWs) composite aerogel films was prepared, and the relationship between the structure and the charge-transport mechanism of the binary complex system was explored based on series and parallel models. Finally, an efficient dimethyl sulfoxide-vapor annealing was employed to further optimize the TE performance of PEDOT:PSS/Te-NWs composite aerogel films. The ZT value was estimated to be 2.0 × 10-2 at room temperature. On the basis of the flexibility and highly enhanced TE performance, a prototype TE generator consisting of p-type PEDOT:PSS/Te-NWs aerogel films and n-type carbon nanotube fibers as legs has been fabricated with an acceptable output power of 1.28 μW at a temperature gradient of 60 K, which could be potentially applied in wearable electronics.
Collapse
Affiliation(s)
- Xiaodong Wang
- Department of Physics , Jiangxi Science and Technology Normal University , Nanchang 330013 , China
- Frontier Institute of Science and Technology , Xi'an Jiaotong University , Xi'an 710054 , China
| | - Peipei Liu
- Department of Physics , Jiangxi Science and Technology Normal University , Nanchang 330013 , China
| | - Qinglin Jiang
- Department of Physics , Jiangxi Science and Technology Normal University , Nanchang 330013 , China
| | - Weiqiang Zhou
- Department of Physics , Jiangxi Science and Technology Normal University , Nanchang 330013 , China
| | - Jingkun Xu
- Department of Physics , Jiangxi Science and Technology Normal University , Nanchang 330013 , China
- School of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , Shandong , China
| | - Jing Liu
- Department of Physics , Jiangxi Science and Technology Normal University , Nanchang 330013 , China
| | - Yanhua Jia
- Department of Physics , Jiangxi Science and Technology Normal University , Nanchang 330013 , China
| | - Xuemin Duan
- Department of Physics , Jiangxi Science and Technology Normal University , Nanchang 330013 , China
| | - Youfa Liu
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Yukou Du
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , China
| | - Fengxing Jiang
- Department of Physics , Jiangxi Science and Technology Normal University , Nanchang 330013 , China
- School of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , Shandong , China
| |
Collapse
|
17
|
Liu J, Jia Y, Jiang Q, Jiang F, Li C, Wang X, Liu P, Liu P, Hu F, Du Y, Xu J. Highly Conductive Hydrogel Polymer Fibers toward Promising Wearable Thermoelectric Energy Harvesting. ACS APPLIED MATERIALS & INTERFACES 2018; 10:44033-44040. [PMID: 30523679 DOI: 10.1021/acsami.8b15332] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The requirement of a portable electron is functioning as a driving force for a wearable energy instrument. Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), as one of the most promising organic electron materials, has been widely studied in energy conversion devices. However, the efforts for PEDOT:PSS fibers are insufficient to boost the development of wearable thermoelectric energy harvesting. Here, a highly conductive p-type PEDOT:PSS fiber was produced by gelation process, which was 3 orders of magnitude higher than that of previous hydrogel fibers. Surprisingly, a post-treatment with organic solvents such as ethylene glycol and dimethyl sulfoxide tripled their electrical conductivity with an only 5% decreased Seebeck coefficient, consequently leading to an optimized thermoelectric power factor. Furthermore, we assembled a p-n-type thermoelectric device connecting five pairs of p-type PEDOT:PSS fibers and n-type carbon nanotube fibers. This fiber-based device displayed an acceptable output voltage of 20.7 mV and a power density of 481.2 μW·cm-2 with a temperature difference of ∼60 K, which might pave the way for the development of organic thermoelectric fibers for wearable energy harvesting.
Collapse
Affiliation(s)
- Jing Liu
- Jiangxi Engineering Laboratory of Waterborne Coatings , Jiangxi Science and Technology Normal University , Nanchang 330013 , People's Republic of China
| | - Yanhua Jia
- Jiangxi Engineering Laboratory of Waterborne Coatings , Jiangxi Science and Technology Normal University , Nanchang 330013 , People's Republic of China
| | - Qinglin Jiang
- Jiangxi Engineering Laboratory of Waterborne Coatings , Jiangxi Science and Technology Normal University , Nanchang 330013 , People's Republic of China
| | - Fengxing Jiang
- Jiangxi Engineering Laboratory of Waterborne Coatings , Jiangxi Science and Technology Normal University , Nanchang 330013 , People's Republic of China
| | - Changcun Li
- Jiangxi Engineering Laboratory of Waterborne Coatings , Jiangxi Science and Technology Normal University , Nanchang 330013 , People's Republic of China
| | - Xiaodong Wang
- Jiangxi Engineering Laboratory of Waterborne Coatings , Jiangxi Science and Technology Normal University , Nanchang 330013 , People's Republic of China
| | - Peng Liu
- Jiangxi Engineering Laboratory of Waterborne Coatings , Jiangxi Science and Technology Normal University , Nanchang 330013 , People's Republic of China
| | - Peipei Liu
- Jiangxi Engineering Laboratory of Waterborne Coatings , Jiangxi Science and Technology Normal University , Nanchang 330013 , People's Republic of China
- School of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , Shandong People's Republic of China
| | - Fei Hu
- School of Materials Science and Energy Engineering , Foshan University , Foshan 528000 , People's Republic of China
| | - Yukou Du
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , People's Republic of China
| | - Jingkun Xu
- Jiangxi Engineering Laboratory of Waterborne Coatings , Jiangxi Science and Technology Normal University , Nanchang 330013 , People's Republic of China
- School of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , Shandong People's Republic of China
| |
Collapse
|
18
|
Carbon Nanotube-Based Organic Thermoelectric Materials for Energy Harvesting. Polymers (Basel) 2018; 10:polym10111196. [PMID: 30961121 PMCID: PMC6290613 DOI: 10.3390/polym10111196] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/22/2018] [Accepted: 10/23/2018] [Indexed: 11/17/2022] Open
Abstract
Carbon nanotubes (CNTs) have attracted much attention in developing high-performance, low-cost, flexible thermoelectric (TE) materials because of their great electrical and mechanical properties. Theory predicts that one-dimensional semiconductors have natural advantages in TE fields. During the past few decades, remarkable progress has been achieved in both theory and experiments. What is more important is that CNTs have shown desirable features for either n-type or p-type TE properties through specific strategies. Up to now, CNT‒polymer hybrids have held the record for TE performance in organic materials, which means they can potentially be used in high-performance TE applications and flexible electronic devices. In this review, we intend to focus on the intrinsic TE properties of both n-type and p-type CNTs and effective TE enhanced strategies. Furthermore, the current trends for developing CNT-based and CNT‒polymer-based high TE performance organic materials are discussed, followed by an overview of the relevant electronic structure‒TE property relationship. Finally, models for evaluating the TE properties are provided and a few representative samples of CNT‒polymer composites with high TE performance are highlighted.
Collapse
|
19
|
Yazdani S, Pettes MT. Nanoscale self-assembly of thermoelectric materials: a review of chemistry-based approaches. NANOTECHNOLOGY 2018; 29:432001. [PMID: 30052199 DOI: 10.1088/1361-6528/aad673] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This review is concerned with the leading methods of bottom-up material preparation for thermal-to-electrical energy interconversion. The advantages, capabilities, and challenges from a material synthesis perspective are surveyed and the methods are discussed with respect to their potential for improvement (or possibly deterioration) of application-relevant transport properties. Solution chemistry-based synthesis approaches are re-assessed from the perspective of thermoelectric applications based on reported procedures for nanowire, quantum dot, mesoporous, hydro/solvothermal, and microwave-assisted syntheses as these techniques can effectively be exploited for industrial mass production. In terms of energy conversion efficiency, the benefit of self-assembly can occur from three paths: suppressing thermal conductivity, increasing thermopower, and boosting electrical conductivity. An ideal thermoelectric material gains from all three improvements simultaneously. Most bottom-up materials have been shown to exhibit very low values of thermal conductivity compared to their top-down (solid-state) counterparts, although the main challenge lies in improving their poor electrical properties. Recent developments in the field discussed in this review reveal that the traditional view of bottom-up thermoelectrics as inferior materials suffering from poor performance is not appropriate. Thermopower enhancement due to size and energy filtering effects, electrical conductivity enhancement, and thermal conductivity reduction mechanisms inherent in bottom-up nanoscale self-assembly syntheses are indicative of the impact that these techniques will play in future thermoelectric applications.
Collapse
Affiliation(s)
- Sajad Yazdani
- Department of Mechanical Engineering and Institute of Materials Science, University of Connecticut, Storrs, CT 06269, United States of America
| | | |
Collapse
|
20
|
Preparation and Thermoelectric Properties of Graphite/poly(3,4-ethyenedioxythiophene) Nanocomposites. ENERGIES 2018. [DOI: 10.3390/en11102849] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Graphite/poly(3,4-ethyenedioxythiophene) (PEDOT) nanocomposites were prepared by an in-situ oxidative polymerization process. The electrical conductivity and Seebeck coefficient of the graphite/PEDOT nanocomposites with different content of graphite were measured in the temperature range from 300 K to 380 K. The results show that as the content of graphite increased from 0 to 37.2 wt %, the electrical conductivity of the nanocomposites increased sharply from 3.6 S/cm to 80.1 S/cm, while the Seebeck coefficient kept almost the same value (in the range between 12.0 μV/K to 15.1 μV/K) at 300 K, which lead to an increased power factor. The Seebeck coefficient of the nanocomposites increased from 300 K to 380 K, while the electrical conductivity did not substantially depend on the measurement temperature. As a result, a power factor of 3.2 μWm−1 K−2 at 380 K was obtained for the nanocomposites with 37.2 wt % graphite.
Collapse
|
21
|
Robust flexible WS2/PEDOT:PSS film for use in high-performance miniature supercapacitors. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.07.040] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
22
|
Liu YX, Liu HH, Wang JP, Zhang XX. Thermoelectric behavior of PEDOT:PSS/CNT/graphene composites. JOURNAL OF POLYMER ENGINEERING 2018. [DOI: 10.1515/polyeng-2017-0179] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractHybrids of poly(3,4-ethylenedioxythiophene) (PEDOT):poly(4-styrene sulfonate) (PSS)/multi-walled carbon nanotube (MWCNT)/graphene (P/M/G), which have high electrical conductivity and low thermal conductivity, were successfully prepared in aqueous solution throughin situpolymerization of 3,4-ethylenedioxythiophene (EDOT) monomers in the presence of poly(sodium 4-styrene sulfonate) (PSSNa). Meanwhile, the composites were characterized by Raman spectroscopy, infrared (IR) spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy. Thermoelectric properties of the samples were measured at room temperature and 50°C. Compared with pristine PEDOT:PSS (P), PEDOT:PSS/MWCNT (P/M) and PEDOT:PSS/graphene (P/G), the power factor of P/M/G composites was significantly improved, whatever the temperature. It increased from 0.061 μW/mK2to 0.105 μW/mK2at room temperature and from 0.070 μW/mK2to 0.142 μW/mK2at 50°C, meaning 72% and 103% enhancement, respectively. The increased power factor is attributed to the synergic effects of MWCNT and graphene, a hybrid structure with excellent electronic coupling and more electric channels.
Collapse
|
23
|
PEDOT:PSS/graphene quantum dots films with enhanced thermoelectric properties via strong interfacial interaction and phase separation. Sci Rep 2018; 8:6441. [PMID: 29691433 PMCID: PMC5915444 DOI: 10.1038/s41598-018-24632-4] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 04/06/2018] [Indexed: 11/09/2022] Open
Abstract
The typical conductive polymer of PEDOT:PSS has recently attracted intensive attention in thermoelectric conversion because of its low cost and low thermal conductivity as well as high electrical conductivity. However, compared to inorganic counterparts, the relatively poor thermoelectric performance of PEDOT:PSS has greatly limited its development and high-tech applications. Here, we report a dramatic enhancement in the thermoelectric performance of PEDOT:PSS by constructing unique composite films with graphene quantum dots (GQDs). At room temperature, the electrical conductivity and Seebeck coefficient of PEDOT:PSS/GQDs reached to 7172 S/m and 14.6 μV/K, respectively, which are 30.99% and 113.2% higher than those of pristine PEDOT:PSS. As a result, the power factor of the optimized PEDOT:PSS/GQDs composite is 550% higher than that of pristine PEDOT:PSS. These significant improvements are attributed to the ordered alignment of PEDOT chains on the surface of GQDs, originated from the strong interfacial interaction between PEDOT:PSS and GQDs and the separation of PEDOT and PSS phases. This study evidently provides a promising route for PEDOT:PSS applied in high-efficiency thermoelectric conversion.
Collapse
|
24
|
Yao H, Fan Z, Cheng H, Guan X, Wang C, Sun K, Ouyang J. Recent Development of Thermoelectric Polymers and Composites. Macromol Rapid Commun 2018; 39:e1700727. [DOI: 10.1002/marc.201700727] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 12/07/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Hongyan Yao
- Department of Materials Science and Engineering; National University of Singapore; Singapore 117574 Singapore
| | - Zeng Fan
- Department of Materials Science and Engineering; National University of Singapore; Singapore 117574 Singapore
| | - Hanlin Cheng
- Department of Materials Science and Engineering; National University of Singapore; Singapore 117574 Singapore
| | - Xin Guan
- Department of Materials Science and Engineering; National University of Singapore; Singapore 117574 Singapore
| | - Chen Wang
- Key Laboratory of Low-Grade Energy Utilization Technologies and Systems; Ministry of Education; School of Power Engineering; Chongqing University; Chongqing 400044 China
| | - Kuan Sun
- Key Laboratory of Low-Grade Energy Utilization Technologies and Systems; Ministry of Education; School of Power Engineering; Chongqing University; Chongqing 400044 China
| | - Jianyong Ouyang
- Department of Materials Science and Engineering; National University of Singapore; Singapore 117574 Singapore
| |
Collapse
|
25
|
Piao M, Chu J, Wang X, Chi Y, Zhang H, Li C, Shi H, Joo MK. Hydrothermal synthesis of stable metallic 1T phase WS 2 nanosheets for thermoelectric application. NANOTECHNOLOGY 2018; 29:025705. [PMID: 29160231 DOI: 10.1088/1361-6528/aa9bfe] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Two-dimensional materials have gained great attention as a promising thermoelectric (TE) material due to their unique density of state with confined electrons and holes. Here, we synthesized 1T phase tungsten disulfide (WS2) nanosheets with high TE performance via the hydrothermal method. Flexible WS2 nanosheets restacked thin films were fabricated by employing the vacuum filtration technique. The measured electrical conductivity was 45 S cm-1 with a Seebeck coefficient of +30 μV K-1 at room temperature, indicating a p-type characteristic. Furthermore, the TE performance could be further improved by thermal annealing treatment. It was found the electrical conductivity could be enhanced 2.7 times without sacrificing the Seebeck coefficient, resulting in the power factor of 9.40 μW m-1 K-2. Moreover, such 1T phase WS2 nanosheets possess high phase stability since the TE properties maintained constant at least half one year in the air atmosphere. Notably, other kinds of 1T phase transitional metal dichalcogenides (TMDCs) with excellent TE performance also could be imitated by using the procedure in this work. Finally, we believe a variety of materials based on 1T phase TMDCs nanosheets have great potential as candidate for future TE applications.
Collapse
Affiliation(s)
- Mingxing Piao
- Key Laboratory of Multi-Scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Wu R, Yuan H, Liu C, Lan JL, Yang X, Lin YH. Flexible PANI/SWCNT thermoelectric films with ultrahigh electrical conductivity. RSC Adv 2018; 8:26011-26019. [PMID: 35541936 PMCID: PMC9082852 DOI: 10.1039/c8ra04863k] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 07/06/2018] [Indexed: 01/18/2023] Open
Abstract
Flexible PANI/SWCNT thermoelectric films with ultrahigh electrical conductivity of ~4000 S cm−1. The maximum PF reaches 100 μW m−1 K−2 at 410 K for the 0.6CNT/PANI.
Collapse
Affiliation(s)
- Ruili Wu
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Haocheng Yuan
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Chan Liu
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing
- P. R. China
| | - Jin-Le Lan
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Xiaoping Yang
- State Key Laboratory of Organic–Inorganic Composites
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Yuan-Hua Lin
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing
- P. R. China
| |
Collapse
|
27
|
Wang X, Kyaw AKK, Yin C, Wang F, Zhu Q, Tang T, Yee PI, Xu J. Enhancement of thermoelectric performance of PEDOT:PSS films by post-treatment with a superacid. RSC Adv 2018; 8:18334-18340. [PMID: 35541140 PMCID: PMC9080561 DOI: 10.1039/c8ra02058b] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 04/30/2018] [Indexed: 11/25/2022] Open
Abstract
Several methods such as the addition of a polar solvent, an acid as well as various post-treatments have been used to improve the thermoelectric performance of conductive poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) films. This paper reports a method using a superacid, trifluoromethanesulfonic acid, in methanol to treat PEDO:PSS films to improve their thermoelectric performance. Treatment of PEDOT:PSS films with this superacid in methanol leads to a significant increase in electrical conductivity from 0.7 to 2980 S cm−1 together with a moderate increase in Seebeck coefficient from 17.6 to 21.9 μV K−1, giving a power factor of 142 μW m−1 K−2, one of the highest values reported in the literature for conductive polymers. The figure of merit (ZT) value is estimated to be 0.19 under optimized conditions. The enhancement of thermoelectric performance, particularly the increase in both electrical conductivity and Seebeck coefficient, is due to the removal of the insulating component and polymer chain realignment giving in turn a denser packing of the conductive PEDOT polymer chains. This post-treatment method would offer an alternative way to improve the thermoelectric performance. Treatment of PEDOT:PSS films with a superacid results in remarkable improvement of thermoelectric performance with a power factor of 142 μW m−1 K−2.![]()
Collapse
Affiliation(s)
- Xizu Wang
- Institute of Materials Research and Engineering
- A*STAR
- Singapore
| | - Aung Ko Ko Kyaw
- Institute of Materials Research and Engineering
- A*STAR
- Singapore
- Department of Electrical and Electronic Engineering
- Southern University of Science and Technology
| | - Cailiu Yin
- College of Science
- Guangxi University for Nationalities
- Nanning
- China
| | - Fei Wang
- Institute of Materials Research and Engineering
- A*STAR
- Singapore
| | - Qiang Zhu
- Institute of Materials Research and Engineering
- A*STAR
- Singapore
| | - Tao Tang
- Institute of Materials Research and Engineering
- A*STAR
- Singapore
| | - Phang In Yee
- Institute of Materials Research and Engineering
- A*STAR
- Singapore
| | - Jianwei Xu
- Institute of Materials Research and Engineering
- A*STAR
- Singapore
| |
Collapse
|
28
|
Zhang Y, Sun H, Cao J, Chen S, Dong L, Xing H, Duan X, Xu J. Preparation and characterization of poly(2′-aminomethyl-3,4-ethylenedioxythiophene) by chemical oxidative polymerization. POLYMER SCIENCE SERIES B 2017. [DOI: 10.1134/s1560090417050190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
29
|
Li C, Kong F, Liu C, Liu H, Hu Y, Wang T, Xu J, Jiang F. Dual-functional aniline-assisted wet-chemical synthesis of bismuth telluride nanoplatelets and their thermoelectric performance. NANOTECHNOLOGY 2017; 28:235604. [PMID: 28513471 DOI: 10.1088/1361-6528/aa6ed0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The wet-chemical approach is of great significance for the synthesis of two-dimensional (2D) bismuth telluride nanoplatelets as a potential thermoelectric (TE) material. Herein, we proposed a simple and effective solution method with the assistance of aniline for the fabrication of bismuth telluride nanoplatelets at a low temperature of 100 °C. The choice of aniline with its dual function avoided the simultaneous use of a capping regent and a toxic reductant. The as-synthesized nanoplatelets have a large size of more than 900 × 500 nm2 and a small thickness of 15.4 nm. The growth of bismuth telluride nanoplatelets are related to the Bi/Te ratio of precursors indicating that a larger content of the Bi precursor is more conducive to the formation of 2D nanoplatelets. The bismuth telluride nanoplatelets pressed into a pellet show a smaller electrical resistivity (∼6.5 × 10-3 Ω · m) and a larger Seebeck coefficient (-135 μV K-1), as well as a lower thermal conductivity (0.27 W m-1 K-1) than those of nanoparticles. The next goal is to further reduce the electrical resistivity and optimize the TE performance by disposing of the residual reactant of aniline adsorbed on the surface of the nanoplatelets.
Collapse
Affiliation(s)
- Changcun Li
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
30
|
Kim TG, Ha SR, Choi H, Uh K, Kundapur U, Park S, Lee CW, Lee SH, Kim J, Kim JM. Polymerizable Supramolecular Approach to Highly Conductive PEDOT:PSS Patterns. ACS APPLIED MATERIALS & INTERFACES 2017; 9:19231-19237. [PMID: 28523914 DOI: 10.1021/acsami.7b04284] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Owing to its high conductivity, solution processability, mechanical flexibility, and transparency, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been extensively explored for use in functional devices including solar cells, sensors, light-emitting diodes, and supercapacitors. The ability to fabricate patterned PEDOT:PSS on a solid substrate is of significant importance to develop practical applications of this conducting polymer. Herein, we describe a new approach to obtain PEDOT:PSS patterns that are based on a polymerizable supramolecular concept. Specifically, we found that UV irradiation of a photopolymerizable diacetylene containing PEDOT:PSS film followed by development in deionized water and subsequent treatment with sulfuric acid (glass and silicon wafer) or formic acid (PET) produces micron-sized PEDOT:PSS patterns on solid substrates. The newly designed photolithographic method, which can be employed to generate highly conductive (>1000 S/cm) PEDOT:PSS patterns, has many advantages including the use of aqueous process conditions, a reduced number of process steps, and no requirement for plasma etching procedures.
Collapse
Affiliation(s)
- Tae Geun Kim
- Department of Chemical Engineering, ‡Department of Chemistry and Research Institute for Natural Science, §Institute of Nano Science and Technology, and ∥Department of Physics, Hanyang University , Seoul 04763, Korea
| | - Su Ryong Ha
- Department of Chemical Engineering, ‡Department of Chemistry and Research Institute for Natural Science, §Institute of Nano Science and Technology, and ∥Department of Physics, Hanyang University , Seoul 04763, Korea
| | - Hyosung Choi
- Department of Chemical Engineering, ‡Department of Chemistry and Research Institute for Natural Science, §Institute of Nano Science and Technology, and ∥Department of Physics, Hanyang University , Seoul 04763, Korea
| | - Kyungchan Uh
- Department of Chemical Engineering, ‡Department of Chemistry and Research Institute for Natural Science, §Institute of Nano Science and Technology, and ∥Department of Physics, Hanyang University , Seoul 04763, Korea
| | - Umesha Kundapur
- Department of Chemical Engineering, ‡Department of Chemistry and Research Institute for Natural Science, §Institute of Nano Science and Technology, and ∥Department of Physics, Hanyang University , Seoul 04763, Korea
| | - Sumin Park
- Department of Chemical Engineering, ‡Department of Chemistry and Research Institute for Natural Science, §Institute of Nano Science and Technology, and ∥Department of Physics, Hanyang University , Seoul 04763, Korea
| | - Chan Woo Lee
- Department of Chemical Engineering, ‡Department of Chemistry and Research Institute for Natural Science, §Institute of Nano Science and Technology, and ∥Department of Physics, Hanyang University , Seoul 04763, Korea
| | - Sang-Hwa Lee
- Department of Chemical Engineering, ‡Department of Chemistry and Research Institute for Natural Science, §Institute of Nano Science and Technology, and ∥Department of Physics, Hanyang University , Seoul 04763, Korea
| | - Jaeyong Kim
- Department of Chemical Engineering, ‡Department of Chemistry and Research Institute for Natural Science, §Institute of Nano Science and Technology, and ∥Department of Physics, Hanyang University , Seoul 04763, Korea
| | - Jong-Man Kim
- Department of Chemical Engineering, ‡Department of Chemistry and Research Institute for Natural Science, §Institute of Nano Science and Technology, and ∥Department of Physics, Hanyang University , Seoul 04763, Korea
| |
Collapse
|
31
|
Effects of solvents on thermoelectric performance of PANi/PEDOT/PSS composite films. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1226-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
32
|
Wang T, Liu C, Wang X, Li X, Jiang F, Li C, Hou J, Xu J. Highly enhanced thermoelectric performance of WS2nanosheets upon embedding PEDOT:PSS. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24349] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tongzhou Wang
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
| | - Congcong Liu
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
| | - Xiaodong Wang
- Key Laboratory of Automobile Materials of Ministry of Education and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Materials Science and Engineering; Jilin University; Changchun 130012 People's Republic of China
| | - Xia Li
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
| | - Fengxing Jiang
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
| | - Changcun Li
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
| | - Jian Hou
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute; Qingdao 266101 People's Republic of China
| | - Jingkun Xu
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
| |
Collapse
|
33
|
Wang L, Dong B, Ge R, Jiang F, Xu J. Fluorene-Based Two-Dimensional Covalent Organic Framework with Thermoelectric Properties through Doping. ACS APPLIED MATERIALS & INTERFACES 2017; 9:7108-7114. [PMID: 28192662 DOI: 10.1021/acsami.6b14916] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Organic semiconductors have great potential as flexible thermoelectric materials. A fluorene-based covalent organic framework (FL-COF-1) was designed with the aim of creating an enhanced π-π interaction among the crystalline backbones. By the introduction of fluorene units into the frameworks, the FL-COF-1 had high thermal stability with a BET surface area over 1300 m2 g-1. The open frameworks were favorable for doping with iodine and followed with the improved charge carrier mobility. The compressed pellet of I2@FL-COF-1 exhibited a high Seebeck coefficient of 2450 μV K-1 and power factor of 0.063 μW m-1 K-2 at room temperature, giving the first example of COFs' potential application as thermoelectric materials.
Collapse
Affiliation(s)
- Liangying Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China
| | - Bin Dong
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China
- College of Chemical Engineering, China University of Mining and Technology , Xuzhou 221116, China
| | - Rile Ge
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China
| | - Fengxing Jiang
- College of Pharmacy, Jiangxi Science and Technology Normal University , Nanchang 330013, China
| | - Jingkun Xu
- College of Pharmacy, Jiangxi Science and Technology Normal University , Nanchang 330013, China
| |
Collapse
|
34
|
Wang T, Liu C, Xu J, Zhu Z, Liu E, Hu Y, Li C, Jiang F. Thermoelectric performance of restacked MoS2 nanosheets thin-film. NANOTECHNOLOGY 2016; 27:285703. [PMID: 27256215 DOI: 10.1088/0957-4484/27/28/285703] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
MoS2 has been predicted to be an excellent thermoelectric material due to its large intrinsic band gap and high carrier mobility. In this work, we exfoliated bulk MoS2 by the assistance of lithium intercalation and fabricated the restacked MoS2 thin-film using a simple filtration technique. These MoS2 thin-films with different thickness showed different thermoelectric performance. It was found that with the increase of thickness, carrier concentration, electrical conductivity and Seebeck coefficient all showed an increasing trend. In particular, the maximum Seebeck coefficient was able to reach 93.5 μV K(-1). This high thermopower indicates that MoS2 will have ideal thermoelectric performance in the future through optimizing its structure. The highest figure of merit (ZT = 0.01) is calculated in this experiment.
Collapse
|
35
|
Singhal P, Rattan S. Swift Heavy Ion Irradiation as a Tool for Homogeneous Dispersion of Nanographite Platelets within the Polymer Matrices: Toward Tailoring the Properties of PEDOT:PSS/Nanographite Nanocomposites. J Phys Chem B 2016; 120:3403-13. [PMID: 26982328 DOI: 10.1021/acs.jpcb.5b11240] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
UNLABELLED Performance of the polymer nanocomposites is dependent to a great extent on efficient and homogeneous dispersion of nanoparticles in polymeric matrices. The dispersion of nanographite platelets (NGPs) in polymer matrix is a great challenge because of the inherent inert nature of the NGPs, poor wettability toward polymer matrices, and easy agglomeration due to van der Waals interactions. In the present study, attempts have been made to use a new approach involving the irradiation of polymer nanocomposites through swift heavy ion (SHI) to homogeneously disperse the NGPs within the polymer matrices. Poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) ( PEDOT PSS)/nanographite nanocomposite (NC) films prepared by the solution blending method were irradiated with SHI (Ni ion beam, 80 MeV) at a fluence range of 1 × 10(10) to 1 × 10(12) ions/cm(2). XRD studies revealed that ion irradiation results in delamination and better dispersion of NGPs in the irradiated nanocomposite films compared to unirradiated films, which is also depicted through SEM, AFM, TEM, and Raman studies. In the irradiated polymer nanocomposite films, the conformation of PEDOT chains changes from coiled to extended coiled structure, which, along with homogeneously dispersed NGPs in irradiated NCs, shows an excellent synergistic effect facilitating charge transport. The remarkable improvement in conductivity from 1.9 × 10(-2) in unirradiated NCs to 0.45 S/cm in irradiated NCs is observed with marked improvement in sensing the response toward nitroaromatic vapors at room temperature. The temperature induced conductivity studies have been carried out for PEDOT PSS/nanographite NCs to comprehend the charge transport mechanism in NC films using the 3D Mott variable range hopping model also. The study reveals SHI as a novel method, addressing the challenge associated with the dispersion of NGPs within the polymer matrix for their enhanced performance toward various applications.
Collapse
Affiliation(s)
- Prachi Singhal
- Directorate of Innovation and Technology Transfer, Amity University Uttar Pradesh , Sec-125, Noida, India
| | - Sunita Rattan
- Amity Institute of Applied Sciences, Amity University Uttar Pradesh , Sec-125, Noida, India
| |
Collapse
|
36
|
Dong LQ, Hu DF, Duan XM, Wang ZP, Zhang KX, Zhu XF, Sun H, Zhang YS, Xu JK. Synthesis and characterization of D-/L-methionine grafted PEDOTs for selective recognition of 3,4-dihydroxyphenylalanine enantiomers. CHINESE JOURNAL OF POLYMER SCIENCE 2016. [DOI: 10.1007/s10118-016-1772-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
37
|
Zhao Z, Richardson GF, Meng Q, Zhu S, Kuan HC, Ma J. PEDOT-based composites as electrode materials for supercapacitors. NANOTECHNOLOGY 2016; 27:042001. [PMID: 26656436 DOI: 10.1088/0957-4484/27/4/042001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Poly (3, 4-ethylenedioxythiophene) (denoted PEDOT) already has a brief history of being used as an active material in supercapacitors. It has many advantages such as low-cost, flexibility, and good electrical conductivity and pseudocapacitance. However, the major drawback is low stability, which means an obvious capacitance drop after a certain number of charge-discharge cycles. Another disadvantage is its limited capacitance and this becomes an issue for industrial applications. To solve these problems, there are several approaches including the addition of conducting nanofillers to increase conductivity, and mixing or depositing metal oxide to enhance capacitance. Furthermore, expanding the surface area of PEDOT is one of the main methods to improve its performance in energy storage applications through special processes; for example using a three-dimensional substrate or preparing PEDOT aerogel through freeze drying. This paper reviews recent techniques and outcomes of PEDOT based composites for supercapacitors, as well as detailed calculations about capacitances. Finally, this paper outlines the new direction and recent challenges of PEDOT based composites for supercapacitor applications.
Collapse
Affiliation(s)
- Zhiheng Zhao
- School of Engineering, University of South Australia, Mawson Lakes, SA5095, Australia
| | | | | | | | | | | |
Collapse
|
38
|
Zhou C, Dun C, Wang Q, Wang K, Shi Z, Carroll DL, Liu G, Qiao G. Nanowires as Building Blocks to Fabricate Flexible Thermoelectric Fabric: The Case of Copper Telluride Nanowires. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21015-21020. [PMID: 26376703 DOI: 10.1021/acsami.5b07144] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A general approach to fabricate nanowires based inorganic/organic composite flexible thermoelectric fabric using a simple and efficacious five-step vacuum filtration process is proposed. As an excellent example, the performance of freestanding flexible thermoelectric thin film using copper telluride nanowires/polyvinylidene fluoride (Cu1.75Te NWs/PVDF = 2:1) as building block is demonstrated. By burying the Cu1.75Te NWs into the PVDF polymer agent, the flexible fabric exhibits room-temperature Seebeck coefficient and electric conductivity of 9.6 μV/K and 2490 S/cm, respectively, resulting in a power factor of 23 μW/(mK(2)) that is comparable to the bulk counterpart. Furthermore, this NW-based flexible fabric can endure hundreds of cycles of bending tests without significant performance degradation.
Collapse
Affiliation(s)
- Chongjian Zhou
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, China
| | - Chaochao Dun
- Center for Nanotechnology and Molecular Materials, Department of Physics, Wake Forest University , Winston-Salem, North Carolina 27109, United States
| | - Qiong Wang
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, China
| | - Ke Wang
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, China
| | - Zhongqi Shi
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, China
| | - David L Carroll
- Center for Nanotechnology and Molecular Materials, Department of Physics, Wake Forest University , Winston-Salem, North Carolina 27109, United States
| | - Guiwu Liu
- School of Materials Science and Engineering, Jiangsu University , Zhenjiang 212013, China
| | - Guanjun Qiao
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University , Xi'an 710049, China
- School of Materials Science and Engineering, Jiangsu University , Zhenjiang 212013, China
| |
Collapse
|