Simultaneous enhancement of electrical conductivity and seebeck coefficient in organic thermoelectric SWNT/PEDOT:PSS nanocomposites

Liu, Si-qi; Li, Hui; He, Chaobin

doi:10.1016/j.carbon.2019.04.007

Cited by 111 publications

(81 citation statements)

References 50 publications

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“…Change of the major charge carriers 30 1000 -p-type 83 n-type 113 -Kim et al [31] PEDOT:PSS FCNT EG, DMSO 46 250 -56 -Yusupov et al [32] PEDOT:PSS FCNT EG, DMSO Number of layers 46 250 -56 -Yusupov et al [33] PEDOT:PSS SWCNT DMSO, NaOH Dedoping 55 1700 0.4-0.6 526 0.39 Liu et al [34] PEDOT:PSS SWCNT Vacuum filtration 45 550 0.26 105 0.12 Jiang et al [36] PEDOT:PSS SWCNT, PEDOT:PSS nanowire Energy filtering 36 2500 352 5 414 Liu et al [37] PEDOT:PSS SWCNT SDS Core-shell, 3D network 50 680 160 1.8 Wang et al [42] PEDOT:PSS, PDDA DWCNT, graphene sandwich-like structure 70 340 168 Stevens et al [43] PEDOT:PSS Graphene 17 1000 30 4 30.9 Liu et al [45] PEDOT:PSS Te, Cu Lu et al [46] PEDOT:PSS Te-s-Se Charge hopping 120 150 222 Ju et al [48] PEDOT:PSS Te H 2 SO 4 , NaOH 65 561 240 0.8 Ni et al [49] PEDOT:PSS Ge thin film Kraut's method 398 154 Lee et al [50] PEDOT [52] PEDOT:PSS Black phosphorus DMSO Energy filtering 15.5 1446 36.2 Novak et al [53] PEDOT:DBSA Te 30 1380 104 Shi et al [55] PEDOT:PSS Lu et al [58] PEDOT:PSS Surface polarization 120 5 96 Peng et al [59] PEDOT:PSS IL H 2 SO 4 , NaOH Heterostructure, Soret effect 65 1500 0.2-0.5 754 0.75 Fan et al [60] PEDOT:PSS PSSH/ PSSNa…”

Section: Nonconventional Approachesmentioning

confidence: 99%

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Polymer‐Based Low‐Temperature Thermoelectric Composites

Yusupov

Vomiero

2020

Adv Funct Materials

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Thermoelectric materials allow direct conversion of waste heat energy into electrical energy, thus contributing to solving energy related issues. Polymerbased materials have been considered for use in heat conversion in the temperature range from 20 to 200 °C, within which conventional materials are not efficient enough, whereas polymers due to their good electronic transport properties, easy processability, non-toxicity, flexibility, abundance, and simplicity of adjustment, are considered as promising materials. Due to the large variety of available polymers and the almost unlimited combinations of possible modifications, the field of polymer-based thermoelectrics is very rapidly developing, already reaching efficiency values close to those of inorganic systems. In the current progress report, the most recent advances in the field are discussed. New approaches to improve thermoelectric performance are described, with a focus on revising the mechanisms to improve the thermoelectric properties of the three most investigated polymer matrixes: poly(3,4-ethylenedioxythiophene) polystyrene sulfonat, poly(3hexylthiophene-2,5-diyl), and polyaniline, alongside the three main paths of optimizing properties: incorporation of carbon-based material and inorganic substances, and treatment with chemical agents. The most promising research in the field is highlighted and thoroughly analyzed. The path toward a lab-to-fab transition for thermoelectric polymers is suggested in perspective.

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Section: Nonconventional Approachesmentioning

confidence: 99%

Section: Pedot:pssmentioning

confidence: 99%

Polymer‐Based Low‐Temperature Thermoelectric Composites

Yusupov

Vomiero

2020

Adv Funct Materials

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“…Zhang et al [ 26 ] fabricated SWCNTs/PEDOT:PSS composite films by a solution mixing method combing with a post‐treatment process, and a PF = 300 μWm −1 K −2 (ZT = ≈0.13) was obtained at room temperature. Liu et al [ 27 ] fabricated SWCNTs/PEDOT:PSS composite films by a drop‐casting method combing with a post‐treatment process, and a PF = 526 μWm −1 K −2 (ZT = ≈0.39) was obtained at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Free‐Standing Single‐Walled Carbon Nanotube/SnSe Nanosheet/Poly(3,4‐Ethylenedioxythiophene):Poly(4‐Styrenesulfonate) Nanocomposite Films for Flexible Thermoelectric Power Generators

Liu

Meng

et al. 2020

Adv Eng Mater

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The flexible thermoelectric (TE) cooling and energy harvesting devices made of p-and n-type TE materials have great potential for the applications in wearable and portable electronics, as they can directly realize mutual conversion between thermal energy and electrical energy without mechanical moving parts or toxic liquids; [1-4] Recently, flexible TE materials have evoked researchers' great interest, and many efforts have been made to improve their TE properties, which is estimated by the figure-of-merit value, ZT ¼ S 2 σT/κ (κ, T, σ, and S are the thermal conductivity, absolute temperature, electrical conductivity, and Seebeck coefficient, respectively). [2,4] Conducting polymers have good flexibility and process ability, which are suitable for preparation of flexible TE materials; [5,6] however, the TE properties of conducting polymers are still much lower when compared with traditional inorganic TE materials. [5] It is an effective approach to improve the conducting polymers' TE performance by preparation of inorganic/conducting polymer composites via a suitable process. [1,7] The most frequently used methods for preparation of inorganic/polymer composites are consisting of the solution mixing, [8] mechanical blending, [9] spin-coating, [10] drop-casting, [11] in situ polymerization, [12] gas-phase polymerization, [13] vacuum filtration, [14] 3D printing, [15] etc. As one of the most promising conducting polymers, poly(3, 4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS), has many advantages, e.g., water solubility, commercial availability, mechanical flexibility, and low intrinsic thermal conductivity. [14,16,17] PEDOT:PSS has, therefore, been commonly used as matrixes for preparation of inorganic/conducting polymer composites. [5] The morphologies of inorganic fillers, such as nanoparticles (NPs), nanosheets (NSs), nanowires (NWs), have significantly affected their dispersibility in conducting polymer matrix and TE properties of the as-prepared composites. [14,18,19] BiTe based alloy NSs, Sn-Se based alloy NSs, and MoS 2 NSs, etc., after exfoliation for their corresponding particles, can be dispersed in a suitable solvent, e.g., ethanol, N-methyl-2-pyrrolidone, or N, N-dimethylformamide.

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“…A recent study [15] shows that a remarkable increase of a Seebeck value can be reached of -18.2 mV/K by using a copper (II) chloride (CuCl 2 ) doping. In comparison with the low thermal conductivity of a only 0.4 W/mK [16] and good electrical conductivity (4380 s/cm) for film [17], PEDOT:PSS has become one of the most promising candidates for TE materials. After several years of development, great achievements have been made in developing functional materials by treating the materials for energy harvesting with different solvents [18,19] and the fabrication of optical TE generators with high output voltages [10,19] This is a great challenge due to the strong demand for high flexibility and good TE properties, but also shows promising prospects for the development of wearable modules for utilizing energy.The TE fiber has aroused great interest in exploring potential applications for wearable technologies.…”

mentioning

confidence: 99%

“…Recently, a reported~15 micron PEDOT:PSS fiber [17] possessed higher flexibility with an electrical conductivity of 3828 S/cm, which is compatible with the value of an ultra-thin PEDOT:PSS film. Different kinds of TE fibers have emerged, and considerable attention has been given to SWCNT/PVDF composite fibers [14,16], , and glass-semiconductor fibers [21] for applications in energy harvesting, thermal sensing, and positioning. With years of development, major achievements have been obtained for flexible sensors towards promising applications in personal health [22,23], artificial intelligence systems [24][25][26], wearable motion detection [27,28], and wearable healthcare devices [29].…”

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confidence: 99%

A Self-Powered Flexible Thermoelectric Sensor and Its Application on the Basis of the Hollow PEDOT:PSS Fiber

et al. 2020

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The thermoelectric (TE) fiber, based on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), which possesses good flexibility, a low cost, good environmental stability and non-toxicity, has attracted more attention due to its promising applications in energy harvesting. This study presents a self-powered flexible sensor based on the TE properties of the hollow PEDOT:PSS fiber. The hollow structure of the fiber was synthesized using traditional wet spinning. The sensor was applied to an application for finger touch, and showed both long-term stability and good reliability towards external force. The sensor had a high scalability and was simple to develop. When figures touched the sensors, a temperature difference of 6 °C was formed between the figure and the outside environment. The summit output voltages of the sensors with 1 to 5 legs gradually increased from 90.8 μV to 404 μV. The time needed for the output voltage to reach 90% of its peak value is only 2.7 s. Five sensors of legs ranging from 1 to 5 were used to assemble the selector. This study may provide a new proposal to produce a self-powered, long-term and stable skin sensor, which is suitable for wearable devices in personal electronic fields.

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Simultaneous enhancement of electrical conductivity and seebeck coefficient in organic thermoelectric SWNT/PEDOT:PSS nanocomposites

Cited by 111 publications

References 50 publications

Polymer‐Based Low‐Temperature Thermoelectric Composites

Polymer‐Based Low‐Temperature Thermoelectric Composites

Free‐Standing Single‐Walled Carbon Nanotube/SnSe Nanosheet/Poly(3,4‐Ethylenedioxythiophene):Poly(4‐Styrenesulfonate) Nanocomposite Films for Flexible Thermoelectric Power Generators

A Self-Powered Flexible Thermoelectric Sensor and Its Application on the Basis of the Hollow PEDOT:PSS Fiber

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