Fabrication of Novel Printable Electrically Conductive Adhesives (ECAs) with Excellent Conductivity and Stability Enhanced by the Addition of Polyaniline Nanoparticles

Wen, Jiayue; Tian, Yanhong; Hang, Chunjin; Zheng, Zhen; Zhang, He; Mei, Zhipeng; Hu, Xuanyi; Tian, Yanqing

doi:10.3390/nano9070960

Cited by 23 publications

(5 citation statements)

References 43 publications

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“…Apart from electrically conductive and adhesive properties, stability (both structural and performance stability), 58 serviceability and operational reliability 59,60 are also common factors when designing an ECA product. Till now, how to improve the stability and reliability of PA-based composites is still challenging.…”

Section: Stability and Reliabilitymentioning

confidence: 99%

Progress in polyacrylate‐based electrically conductive adhesives: Featured properties, preparation, applications, and perspectives

Zhang,

Tang,

Jiang

et al. 2024

Polymer Composites

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Polyacrylate‐based electrically conductive adhesives (PA‐based ECAs) have attracted much attention due to their wide applications in precise instruments and consumer electronics. To obtain high‐performance and environmentally friendly PA‐based ECAs, their main properties and corresponding mechanisms to performance, chemical constitutions and structure–function relationships should be well understood, and the applications of recent PA‐based ECAs should be comprehensively summarized. This review focuses on the progress of PA‐based ECAs in the past two decades and discusses the featured properties, preparation of PA, the selection of conductive fillers and the adhibition of the ECAs. The aim of the review is to find the challenges of high‐performance ECAs and offer some measures and foresee their future development.Highlights Preparation methods of polyacrylate (PA)‐based composites are presented. Properties of PA‐based electrically conductive adhesives (ECAs) are outlined. Selection of conductive fillers and the adhibition of ECAs are discussed. Representative applications of PA‐based ECAs are exhibited. Present main challenges and future solutions are highlighted.

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Section: Stability and Reliabilitymentioning

confidence: 99%

Progress in polyacrylate‐based electrically conductive adhesives: Featured properties, preparation, applications, and perspectives

Zhang,

Tang,

Jiang

et al. 2024

Polymer Composites

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“…[11,12] However, coating methods are typically used to coat the entire or large part of the substrate, therefore still hindering their practical use because of low resolution and waste of materials. [13,14] Contact printing methods, including gravure printing and screen printing, need a mask that still limits their printing resolution. [15][16][17] Therefore, non-contact printing technologies with relatively higher resolution are widely used for electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Electrohydrodynamic Printing of High‐Resolution Self‐Reduced Soldered Silver Nanowire Pattern for Wearable Flexible Strain Sensors

Feng

Zhang

et al. 2023

Adv Materials Technologies

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As an indispensable aspect of flexible and printed electronics, flexible strain sensors composed of silver nanowires (AgNWs) have attracted significant attention recently. However, low resolution and large wire‐wire contact resistance still impede the stability and sensitivity of AgNW‐based flexible strain sensors. Herein, self‐reduced soldered AgNW pattern is fabricated by combining the high‐resolution electrohydrodynamic (EHD) printing and joining of AgNWs. The resolution achieved by EHD printing is up to ≈20 µm. The contact resistance between AgNWs is greatly reduced by depositing Ag atoms at the AgNW junctions while EHD printing Ag ion ink on as‐prepared AgNW pattern. After self‐reduced soldering process, the sheet resistance decreases from 14.8 to 2.13 Ω sq−1. This process can be conducted under room temperature and ambient conditions and requires no external assistance from heat, light, or mechanical pressing. Furthermore, the deposited Ag atoms at the junctions remarkably improve the sensitivity (gauge factor 14.5–37.9) and stability (over 5000 stretching cycles with 25% strain). This superior sensitivity and stability occur because nano‐junctions induced by the self‐reduced soldering process significantly reduce the initial resistance and enable a robust network structure. This EHD‐based technique for nanojoining of AgNWs demonstrates its potential for flexible and wearable electronics.

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“…), carbon materials (e.g., graphene, carbon nanotube, carbon black, etc. ), and conducting polymer nanomaterials (e.g., polyaniline nanoparticles, polyaniline@cellulose nanowhiskers, polypyrrole nanotubes, etc. ), were reported to elevate the conductivity of ECAs.…”

Section: Introductionmentioning

confidence: 99%

Highly Conductive and Highly Dispersed Polythiophene Nanoparticles for Fabricating High-Performance Conductive Adhesives

Cao

Cui

Wang

et al. 2020

ACS Appl. Electron. Mater.

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The continuous advancement of modern electronic equipment requires increasing the conductivity of electrically conductive adhesives (ECAs), but the gap between discrete silver flakes in conventional ECAs considerably hinder electron transport. In this work, we demonstrated 1500fold enhancement in electrical conductivity by adding a kind of polythiophene nanoparticle (PTh nanoparticles) in the polyurethane-based ECAs with an optimal value of 3.2 × 10 4 S/cm. These PTh nanoparticles have exceptionally high conductivity and are capable of forming a stable colloidal suspension in various kinds of organic solvents. These properties enable PTh nanoparticles to be well-distributed in the polymer matrix and enable gap-filling among Ag flakes to fabricate high-performance ECAs. In the presence of PTh nanoparticles, the resulting ECA has not only outstanding conductivity but also excellent electrical stability under high mechanical deformation. The electrical resistivity of the pattern made by the PTh nanoparticles-containing ECAs remained stable after being wrapped in a 6 mm bend radius for over 7500 cycles or pressed under 1000 kPa. In addition, when the ECAs were stored for 2 weeks at 80 °C and 60% relative humidity, no significant change in conductivity of the ECAs was observed. A flexible printed circuit was fabricated using the above-mentioned ECAs containing PTh nanoparticles, demonstrating their potential for advanced flexible electronic devices.

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Fabrication of Novel Printable Electrically Conductive Adhesives (ECAs) with Excellent Conductivity and Stability Enhanced by the Addition of Polyaniline Nanoparticles

Cited by 23 publications

References 43 publications

Progress in polyacrylate‐based electrically conductive adhesives: Featured properties, preparation, applications, and perspectives

Progress in polyacrylate‐based electrically conductive adhesives: Featured properties, preparation, applications, and perspectives

Electrohydrodynamic Printing of High‐Resolution Self‐Reduced Soldered Silver Nanowire Pattern for Wearable Flexible Strain Sensors

Highly Conductive and Highly Dispersed Polythiophene Nanoparticles for Fabricating High-Performance Conductive Adhesives

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