High-performance post-treatment-free PEDOT based thermoelectric with the establishment of long-range ordered conductive paths

Li, Xin; He, Zhenhang; Liu, Zhen; Chen, Yu; Zhou, Zekun; Chen, Guixiang; Qi, Weiheng; Rauber, Daniel; Kay, Christopher W. M.; Zhang, Peng

doi:10.1016/j.cej.2022.140047

Cited by 6 publications

(23 citation statements)

References 69 publications

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“…The solid‐state PEDOT : PSS films produced from the dispersions provide relatively poor electrical charge transport properties owing to the ineffective interchain coupling between π‐conjugated PEDOT chains in this core‐shell conformation. It has been reported that the introduction of water‐soluble ILs into PEDOT : PSS solution can modify the morphology of PEDOT : PSS films from granular structure to nanofibrillar network structure with ordered conductive paths, which leads to significant enhancement in electrical conductivity up to three orders of magnitude [17–20] …”

Section: Resultsmentioning

confidence: 99%

“…It has been reported that the introduction of water-soluble ILs into PEDOT : PSS solution can modify the morphology of PEDOT : PSS films from granular structure to nanofibrillar network structure with ordered conductive paths, which leads to significant enhancement in electrical conductivity up to three orders of magnitude. [17][18][19][20]…”

Section: Chemical and Structural Informationmentioning

confidence: 99%

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Highly Stretchable and Highly Conductive Organic Transparent Conductors Based on Aqueous‐Processable Conducting Polymer/Ionic Liquid Composites

Kee

2023

ChemistrySelect

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Deformable (semi)conducting polymers have attracted great attention for realizing next‐generation wearable and stretchable electronics. A conductive π‐conjugated polymer, poly(3,4‐ethylenedioxythiophene) : poly(styrenesulfonate) (PEDOT : PSS) is considered as a key component based on the promising electrical characteristics and aqueous processability. However, the general trade‐off relationship between electrical and mechanical performance in PEDOT : PSS is a crucial issue for its practical application as a stretchable conductor. Herein, a simultaneous improvement in electrical conductivity and mechanical stretchability was achieved from PEDOT : PSS by introducing a water‐soluble ionic liquid, 1‐ethyl‐3‐methylimidazolium dicyanoimidazolate (EMIM : DCIM). The electromechanical improvement is closely related with the EMIM : DCIM contents, in which EMIM : DCIM not only causes a morphological transition but also acts as a plasticizing agent. As a result, highly stretchable and highly conductive PEDOT : PSS/EMIM : DCIM composites were obtained with an initial electrical conductivity of ≈550 S cm−1 and maximum strain of 70 % while maintaining the initial electrical properties. Finally, a potential application of PEDOT : PSS/EMIM : DCIM as a stretchable transparent conductor was successfully demonstrated with given high visible transparency and eco‐friendly processability.

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Section: Resultsmentioning

confidence: 99%

Section: Chemical and Structural Informationmentioning

confidence: 99%

Highly Stretchable and Highly Conductive Organic Transparent Conductors Based on Aqueous‐Processable Conducting Polymer/Ionic Liquid Composites

Kee

2023

ChemistrySelect

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Section: Introductionmentioning

confidence: 99%

Boosting the Performance of PEDOT:PSS Based Electronics Via Ionic Liquids

Li,

Pang,

Wang

et al. 2024

Advanced Materials

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The conducting polymer poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) offers superior advantages in electronics due to its remarkable combination of high electrical conductivity, excellent biocompatibility, and mechanical flexibility, making it an ideal material among electronic skin, health monitoring, and energy harvesting and storage. Nevertheless, pristine PEDOT:PSS films exhibit limitations in terms of both low conductivity and stretchability, while conventional processing techniques cannot enhance these properties simultaneously, facing the dilemma that highly conductive interconnected PEDOT:PSS domains are susceptible to tensile strain. Via modifying PEDOT:PSS with ionic liquids (ILs), not only a synergistic enhancement of the electrical and mechanical properties can be achieved, but also the requirements for the printable bioelectronic are satisfied. In this comprehensive review, we have undertaken the task of providing a thorough examination of the mechanisms and applications of ILs as modifiers for PEDOT:PSS. First, the theoretical mechanisms governing the interactions between ILs and PEDOT:PSS is discussed detailly. Then, we have reviewed the enhanced properties and the elucidation of the underlying mechanisms achieved through the incorporation of ILs. Next, specific applications of ILs‐modified PEDOT:PSS relevant to bioelectronic devices are presented. Lastly, we offer a concise summary and engage in a discussion regarding the opportunities and challenges in this exciting field.This article is protected by copyright. All rights reserved

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“…Fortunately, the further incorporation of an ionic liquid (IL) is expected to solve all the above defects, which can lead to phase separation of PEDOF:PSS due to the ion exchange effect while promoting the SWCNT dispersion owing to the specific interaction between the p-electronic surface of carbon and the imidazolium ion of the IL, finally enhancing the thermoelectric properties of the as-prepared nanocomposite. [28][29][30] Herein, in this study, we mimic the perception functions of the human hand skin to design and manufacture a temperaturepressure multifunctional flexible tactile sensor based on a novel IL/SWCNT/PEDOT:PSS nanocomposite, which possesses the ability to simultaneously identify the temperature, materials and shapes of the target objects. In this hybrid system, SWCNTs play an attractive role for thermoelectric components to resolve the defect of low electrical conductivity in the PEDOT:PSS organic polymer, and the further doping of the IL manipulates the ordering structure of PEDOT and promotes the uniform dispersion of SWCNTs in the polymer matrix, thereby leading to a synergistic enhancement of electrical conductivity and the Seebeck coefficient.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A selectively bimodal flexible sensor based on IL/SWCNTs/PEDOT:PSS nanocomposites for materials and shape recognition

Yuan,

Tian,

et al. 2024

J. Mater. Chem. C

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High-performance post-treatment-free PEDOT based thermoelectric with the establishment of long-range ordered conductive paths

Cited by 6 publications

References 69 publications

Highly Stretchable and Highly Conductive Organic Transparent Conductors Based on Aqueous‐Processable Conducting Polymer/Ionic Liquid Composites

Highly Stretchable and Highly Conductive Organic Transparent Conductors Based on Aqueous‐Processable Conducting Polymer/Ionic Liquid Composites

Boosting the Performance of PEDOT:PSS Based Electronics Via Ionic Liquids

A selectively bimodal flexible sensor based on IL/SWCNTs/PEDOT:PSS nanocomposites for materials and shape recognition

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