Highly foldable and flexible films of PEDOT:PSS/Xuan paper composites for thermoelectric applications

Deng, Liang; Zhang, Yichuan; Wei, Shasha; Lv, Hang; Chen, Guangming

doi:10.1039/d1ta00820j

Cited by 37 publications

(22 citation statements)

References 36 publications

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“…Since then, intensive studies on thermoelectric materials and devices have emerged. [9][10][11][12] Over the last decade, the topic of "thermoelectric" has received increasing attention, which can be reflected by the continuous growth in the number of annual publications (as shown in Figure 1). Thermoelectric performance of materials can be evaluated by a dimensionless figure of merit, ZT = S 2 σT/κ, [13] where S is the Seebeck coefficient that represents the magnitude of Seebeck voltage in response to the temperature difference applied on material body, σ and κ are the electrical conductivity and thermal conductivity of the material, respectively, and T is the absolute temperature.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Designing Thermoelectric Metal–Organic Frameworks

Fan

Liu

Chen

2021

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Thermoelectrics that enable direct heat–electricity conversion possess unique advantages for green and renewable energy revolution and have received rapidly growing attention in the past decade. Among various thermoelectric materials, metal–organic frameworks (MOFs) with intrinsic high porosity and tunable physical/chemical properties are emerging as a promising class of materials that have been demonstrated to exhibit many unique merits for thermoelectric applications. Their structural topologies and thermoelectric properties can be facilely regulated by precisely selecting and arranging metal centers and organic ligands. Besides, a large variety of guest molecules can be incorporated within their pores, giving rise to novel avenues of raising energy‐conversion efficiency. This review focuses on the recent advances in designing conductive MOFs and MOF‐based composites for thermoelectric applications. It first introduces the fundamental thermoelectric parameters and the underlying regulation mechanisms specifically effective for MOFs, then summarizes the related studies conducted in recent years, where the structural design strategies of tuning thermoelectric properties are demonstrated and discussed. In the final part, conclusions and perspectives with the envision of an outlook for this promising area are presented.

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Section: Introductionmentioning

confidence: 99%

Recent Progress in Designing Thermoelectric Metal–Organic Frameworks

Fan

Liu

Chen

2021

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“…PEDOT-based paper composites can be prepared using either ready-to-use suspensions of PEDOT (e.g., PEDOT:PSS) that are added/deposited on paper to form the composite or in situ polymerization of EDOT monomers to PEDOT onto the paper fibers. Previous reports have mainly used ready-to-use PEDOT:PSS suspensions that have been added on top of the paper or they have used a dip-coating procedure. − The addition of ready-to-use PEDOT suspensions on 3D fibrous structures such as paper that have areas not easily accessible usually leads to composites with high electrical resistance . Hamedi et al actually made a PEDOT:PSS paper composite using ready-to-use suspensions and used it as a paper heating element because of its high electrical resistance .…”

Section: Resultsmentioning

confidence: 99%

Wearable Thermoelectric Devices Based on Three-Dimensional PEDOT:Tosylate/CuI Paper Composites

Maji

Rousti

Kazi

et al. 2021

ACS Appl. Mater. Interfaces

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Thermoelectric composites of organic and inorganic materials exhibit significantly enhanced thermoelectric properties compared with pristine organic thermoelectrics so they might be better suited as core materials of wearable thermoelectric devices. This study describes the development of three-dimensional (3D) paper PEDOT:tosylate/CuI composites that could be shaped as 3 mm thick blocks to convert a temperature difference between their bottom and top sides into power; the majority of organic thermoelectric materials are shaped as thin strips usually on a planar substrate and convert a temperature difference between the opposite edges of the strips into power. The 3D paper PEDOT:tosylate/CuI composites can produce a power density equal to 4.8 nW/cm2 (ΔΤ = 6 Κ) that is 10 times higher than that of the pristine paper PEDOT:Tos composites. The enhanced thermoelectric properties of the paper PEDOT:tosylate/CuI composites are attributed to the CuI nanocrystals entrapped inside the composite that increases the Seebeck coefficient of the composite to 225 μV K–1; the Seebeck coefficient of paper PEDOT:Tos is 65 μV K–1. A proof-of-concept wearable thermoelectric device that uses 36 blocks of the paper PEDOT:tosylate/CuI composites (as p-type elements) and 36 wires of monel (as n-type elements) can produce up to 4.7 μW of power at ΔΤ = 20 K. The device has a footprint of 64 cm2 and can be placed directly over the skin or can be embedded into clothing.

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“…TE is a green technology to directly achieve the energy interconversion between heat and electricity, where its physics is governed by three thermodynamic effects including the Seebeck, Peltier, and Thomson effects. The conversion efficiency is determined by the dimensionless figure of merit (ZT):

ZT = \frac{S^{2} σ T}{κ} = \frac{P F}{κ} T,

where S is the Seebeck coefficient or thermopower, σ is the electrical conductivity, T is the absolute temperature, κ is the thermal conductivity, and PF is the power factor ( PF = S 2 σ ) 5 . High‐efficiency and commercially viable TE techniques will revolutionize heat management, reduce the greenhouse effect, benefit the environment, and so forth.…”

Section: Introductionmentioning

confidence: 99%

“…where S is the Seebeck coefficient or thermopower, σ is the electrical conductivity, T is the absolute temperature, κ is the thermal conductivity, and PF is the power factor (PF = S 2 σ). 5 High-efficiency and commercially viable TE techniques will revolutionize heat management, reduce the greenhouse effect, benefit the environment, and so forth. Most TE materials are narrow-bandgap chalcogenide-based semiconductors, among which Bi 2 Te 3 shows the highest room-temperature ZT for n-type bulk nanostructured pellets of a monocomponent.…”

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confidence: 99%

Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi₂Te₃/CNT hybrid toward low thermal conductivity and high thermoelectric performance

Chen

Zhang

et al. 2021

Carbon Energy

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Solution processability and flexibility still remain major challenges for many thermoelectric (TE) materials, including bismuth telluride (Bi2Te3), a typical and commercially available TE material. Here, we report a new solution‐processed method to prepare a flexible film of a Bi2Te3/single‐walled carbon nanotube (SWCNT) hybrid, where the dissolved Bi2Te3 ion precursors are mixed with dispersed SWCNTs in solution and recrystallized on the SWCNT surfaces to form a “cement–rebar”‐like architecture. The hybrid film shows an n‐type characteristic, with a stable Seebeck coefficient of −100.00 ± 1.69 μV K−1 in air. Furthermore, an extremely low in‐plane thermal conductivity of ∼0.33 W m−1 K−1 is achieved at 300 K, and the figure of merit (ZT) reaches 0.47 ± 0.02. In addition, the TE performance is independent of mechanical bending. The unique “cement–rebar”‐like architecture is believed to be responsible for the excellent TE performances and the high flexibility. The results provide a new avenue for the fabrication of solution‐processable and flexible TE hybrid films and will speed up the applications of flexible electronics and energy conversion.

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Highly foldable and flexible films of PEDOT:PSS/Xuan paper composites for thermoelectric applications

Abstract: Highly foldable and flexible energy materials are requisite for actual applications in self-powered wearable electronics in complex environments. Unfortunately, thermoelectric (TE) materials showing excellent foldability and flexibility under external mechanical...

Cited by 37 publications

References 36 publications

Recent Progress in Designing Thermoelectric Metal–Organic Frameworks

Recent Progress in Designing Thermoelectric Metal–Organic Frameworks

Wearable Thermoelectric Devices Based on Three-Dimensional PEDOT:Tosylate/CuI Paper Composites

Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi₂Te₃/CNT hybrid toward low thermal conductivity and high thermoelectric performance

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Highly foldable and flexible films of PEDOT:PSS/Xuan paper composites for thermoelectric applications

Abstract: Highly foldable and flexible energy materials are requisite for actual applications in self-powered wearable electronics in complex environments. Unfortunately, thermoelectric (TE) materials showing excellent foldability and flexibility under external mechanical...

Cited by 37 publications

References 36 publications

Recent Progress in Designing Thermoelectric Metal–Organic Frameworks

Recent Progress in Designing Thermoelectric Metal–Organic Frameworks

Wearable Thermoelectric Devices Based on Three-Dimensional PEDOT:Tosylate/CuI Paper Composites

Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi2Te3/CNT hybrid toward low thermal conductivity and high thermoelectric performance

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Construction of a cement–rebar nanoarchitecture for a solution‐processed and flexible film of a Bi₂Te₃/CNT hybrid toward low thermal conductivity and high thermoelectric performance