Biomimetic Approach to Facilitate the High Filler Content in Free-Standing and Flexible Thermoelectric Polymer Composite Films Based on PVDF and Ag<sub>2</sub>Se Nanowires

Zhou, Hongju; Zhang, Zhenjie; Sun, Chengxiao; Deng, Hua; Fu, Qiang

doi:10.1021/acsami.0c15414

Cited by 53 publications

(34 citation statements)

References 61 publications

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“…As a result of the highest degree crystal, S 2 σ reaches 3 μW m -1 K -2 at room temperature. Another [125] reported that the best TE performance in P3HT can be achieved by doping with 17 wt% F4CNQ, attributed to the fact that the dopant at this Reproduced with permission [211] .Copyright 2018 The Royal Society of Chemistry. P3HT: Poly(3-hexylthiophene); CNTs: carbon nanotubes.…”

Section: P3htmentioning

confidence: 99%

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Advances in conducting polymer-based thermoelectric materials and devices

Cao¹,

Shi²,

Zou³

et al. 2021

Microstructures

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Conducting polymer-based thermoelectric materials are considered the most promising candidates for applying to wearable thermoelectric devices because of their high electrical conductivities, flexibility, stability, and low-toxicity features. Therefore, a timely review is needed to comprehensively overview their most recent progress in the last few years, considering the rapid development of thermoelectric conducting polymers. In this work, we carefully summarize recent advances in thermoelectric conducting polymers from aspects of their mechanisms, synthesis, micro/nanostructures, mechanical/thermoelectric properties, and related functional devices. A few state-of-theart thermoelectric conducting polymers, including poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate), poly(3-hexylthiophene), polyaniline, and polypyrrole, are highlighted in detail. In the end, we point out the challenges, controversies, and outlooks of conducting polymers for future thermoelectric applications.

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Section: P3htmentioning

confidence: 99%

“…In addition to the research on F4CNQ-doped P3HT, CNT/P3HT composite materials are also in popularity [211] , from which the good performance is benefitted from the unique structure and excellent electron transport performance of CNT itself. For example, composite films with different diameters were prepared [Figure 10C].…”

Section: P3htmentioning

confidence: 99%

Advances in conducting polymer-based thermoelectric materials and devices

Cao¹,

Shi²,

Zou³

et al. 2021

Microstructures

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“…Alloy microwires are the main heating materials used in most industrial and domestic heating applications requiring high-temperature requirements [89] . These systems' advantage is that they can be readily incorporated into woven or knitted textile materials for textile applications due to wires' flexible and continuous filament nature.…”

Section: Metal or Alloy Microwiresmentioning

confidence: 99%

Design and Construction of Deformable Heaters: Materials, Structure, and Applications

Zhou

2021

Adv Elect Materials

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The technological evolution presents us with infinite possibilities of deformable electronics, far beyond what is possible with conventional electronics. [9][10][11][12] For the past few years, heaters' development has grown rapidly due to wearable electronics' advances and the growing need for practical medical requirements. [13][14][15] The advantages of heaters, such as lightweight, good heating stability, and flexibility, make heaters generally a better choice than conventional heating elements. Various heaters applications have been reported, including deicing devices [16][17][18][19][20] , thermal management devices [21][22][23][24][25] , healthcare [26][27][28][29] , wearable sensors [30][31][32] , etc. For instance, heaters can provide the warmth required to extend the operating temperature of liquid crystal displays (LCDs) in cold environments or can increase the temperature for antifogging systems, anti-icing, deicing of optics, or optical displays [33,34] .Conventional rigid heaters are usually using semiconductor or metallic materials as the heating elements, which have demonstrated stable and excellent performance. For example, Rao and co-workers [35] fabricated a transparent heater by physically depositing Au on a quartz substrate and using an acrylic resin as a crack sacrificial template. It is a transparent conductor with a low sheet resistance of 5.4 Ω sq −1 and a high-temperature heater that can reach ≈600 °C within 38 s by applying a voltage of 15 V. However, the heater is restricted in many applications with portable needs, such as human motion detection, wearable electronics, etc., due to the rigid and thick quartz substrate.As shown in Figure 1a, conventional heaters always consist of a heating element and rigid substrate, and the working principle of electrical heaters is based on the Joule effect and thermal diffusion. However, inherently rigid substrate limits the applications of conventional heaters [36] . Flexible and stretchable heaters had gained tremendous attention with the advances of soft electronics. [37][38][39] Flexible heaters can adapt to moderate deformation, such as bending and twisting. [40,41] And stretchable heaters have more application scenarios due to their stretchable characteristics. [42,43] In the last few years, deformable heaters have gained rapid development due to their wide strain range, good repeatability and low density. [44] Figure 1b shows different structure designs of deformable heaters. One of the most significant advantages Conventional heaters have evolved from traditional rigid heaters to flexible heaters, stretchable heaters, and deformable heaters for the development of soft electronics. Film-based or filament-based heaters can be designed and engineered to fulfill the deformable, adaptable and stretchable applications. Compared with conventional heaters, deformable heaters can maintain stable electrothermal property even with large deformation. Based on this, deformable heaters have shown great potential to be used in the field of Internet of Thin...

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“…For example, Mi et al investigated the effects of excess Se on the thermoelectric properties of Ag 2 Se [23], where a maximum thermoelectric ZT of 0.85 was obtained for Ag 2 Se 1.06 . Zhou et al prepared unsupported thermoelectric films of polyvinylidene fluoride (PVDF)/Ag 2 Se via a drop coating method [24], and the maximum power factor obtained was 189.02 µW•m −1 •K −2 when the mass ratio of PVDF to Ag 2 Se was 1:9.5. Although the addition of PVDF significantly improved the flexibility and stability, it also reduced the thermal conductivity of the thermoelectric film, owing to the insulating nature of PVDF.…”

Section: Introductionmentioning

confidence: 99%

Effect of L-Ascorbic Acid Solution Concentration on the Thermoelectric Properties of Silver Selenide Flexible Films Prepared by Vacuum-Assisted Filtration

et al. 2022

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Currently, there are several thermoelectric materials, such as Ag2Te, Bi2Te3, and Sb2Te3, that have been investigated for thermoelectric applications. However, the toxicity and rarity of most of these materials make them unsuitable for practical applications. In contrast, silver selenide (Ag2Se) is an abundant and environment-friendly thermoelectric material. This study provides a facile synthetic approach for preparing high-performance, low-cost, and flexible Ag2Se thermoelectric films. Ag2Se nanomaterials were prepared based on the chemical template method, and the reaction solution concentration was varied to systematically investigate the effects of reaction solution concentration on the characterization and thermoelectric properties of Ag2Se nanomaterials. For convenience of testing, the flexible Ag2Se films were prepared on porous nylon membranes using vacuum-assisted filtration. The prepared thermoelectric films were tested using an X-ray diffractometer, scanning electron microscope, Seebeck coefficient tester, and Hall tester. The film prepared from the solution with the lowest concentration (18.0 mM) demonstrated the best thermoelectric performance, with a maximum power factor of 382.18 μW∙m−1∙K−2 at ~400 K. Additionally, a cold-pressing treatment could effectively enhance the electrical conductivity of the film, without damaging the substrate, as the conductivity of the film remained at 90% of the original value after 1500 bending cycles.

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Biomimetic Approach to Facilitate the High Filler Content in Free-Standing and Flexible Thermoelectric Polymer Composite Films Based on PVDF and Ag₂Se Nanowires

Cited by 53 publications

References 61 publications

Advances in conducting polymer-based thermoelectric materials and devices

Advances in conducting polymer-based thermoelectric materials and devices

Design and Construction of Deformable Heaters: Materials, Structure, and Applications

Effect of L-Ascorbic Acid Solution Concentration on the Thermoelectric Properties of Silver Selenide Flexible Films Prepared by Vacuum-Assisted Filtration

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Biomimetic Approach to Facilitate the High Filler Content in Free-Standing and Flexible Thermoelectric Polymer Composite Films Based on PVDF and Ag2Se Nanowires

Cited by 53 publications

References 61 publications

Advances in conducting polymer-based thermoelectric materials and devices

Advances in conducting polymer-based thermoelectric materials and devices

Design and Construction of Deformable Heaters: Materials, Structure, and Applications

Effect of L-Ascorbic Acid Solution Concentration on the Thermoelectric Properties of Silver Selenide Flexible Films Prepared by Vacuum-Assisted Filtration

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Product

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Biomimetic Approach to Facilitate the High Filler Content in Free-Standing and Flexible Thermoelectric Polymer Composite Films Based on PVDF and Ag₂Se Nanowires