High dielectric constant polyaniline/sulfonated poly(aryl ether ketone) composite membranes with good thermal and mechanical properties

Zhang, Yunhe; Huo, Pengfei; Liu, Xiao; Rong, Changru; Wang, Guibin

doi:10.1002/app.39321

Cited by 9 publications

(6 citation statements)

References 22 publications

(14 reference statements)

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“…The spectral overlap between PL spectrum of PAEF and absorption spectrum of PM6 can well support the Dexter or Förster resonance energy transfer between PAEF and PM6, which is responsible for the increased J SC ’s. [ 52,53 ] 2) High dielectric insulating polymers, such as PAE resins [ 54–56 ] and polystyrene derivatives, [ 57 ] can induce the enhanced dielectric property and built‐in‐potential of the BHJ layer, which has been proved to result in improved device performance, such as high J SC ’s and PCEs in solar cells. [ 57–62 ] As shown in Figure S27 in the Supporting Information, the integrated J SC ’s from the external quantum efficiency (EQE) curves and enhanced EQE responses are consistent with the J – V measurements.…”

Section: Resultsmentioning

confidence: 99%

A Universal Method to Enhance Flexibility and Stability of Organic Solar Cells by Constructing Insulating Matrices in Active Layers

Han

Bao

Huang

et al. 2020

Adv Funct Materials

111

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With the rapid development of power conversion efficiency (PCE), flexibility–stability of organic solar cells (OSCs) are becoming one of the primary barriers for commercialization. This work shows that insulating poly(aryl ether) (PAE) resins have highly twisted‐stiff backbones without any side chains, which possess excellent mechanical stability, thermal stability, and good compatibility with organic photovoltaic materials. After introducing 5 wt% PAE resin as supporting matrices into the bulk heterojunction (BHJ) layer, the device yields a high PCE of 16.13%. Importantly, the devices show impressive flexibility and improved stability with passivated morphology, such as PM6/Y6‐based devices with 30 wt% PAE retains the PCE of 15.17% and exhibits enhanced 4.4‐fold elongation at break (25.07%). This is the recorded stretchability of the BHJ layer for OSCs with PCE > 8%, and morphological changes during tensile deformation are first investigated by in situ wide‐angle X‐ray scattering measurements. The PAE matrices strategy exhibits good universality in the other four photovoltaic systems. These results demonstrate that heat‐resistant PAE resins serve as supporting matrices with a tunneling effect into OSCs without sacrificing photovoltaic performance and simultaneously improve the flexibility and stability of devices, which can play an important role in promoting the development of stable and wearable electronics.

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Section: Resultsmentioning

confidence: 99%

A Universal Method to Enhance Flexibility and Stability of Organic Solar Cells by Constructing Insulating Matrices in Active Layers

Han

Bao

Huang

et al. 2020

Adv Funct Materials

111

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“…N,N ‐Dimethylformamide was purchased from Tianjin Tiantai Fine Chemicals Co., Ltd. Natural flake graphite was purchased from Henan Xinlei Graphite Co., Ltd. The SPAEK polymers were prepared in our laboratory according to previously published protocols …”

Section: Methodsmentioning

confidence: 99%

Preparation and dielectric properties of sulfonated poly(aryl ether ketone)/acidified graphite nanosheet composites

Jiang

Liu

Wang

et al. 2013

J of Applied Polymer Sci

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Percolative dielectric composites of sulfonated poly(aryl ether ketone) (SPAEK) and acidified graphite nanosheets (AGSs) were fabricated by a solution method. The dielectric constant of the as-prepared composite with 4.01 vol % AGSs was found to be 330 at 1000 Hz; this was a significant increase compared to that of pure SPAEK. Through the calculation, a low percolation threshold of the AGS/SPAEK composite was confirmed at 3.18 vol % (0.0318 volume fraction) AGSs; this was attributed to the large surface area and high conductivity of the AGSs. Additionally, our percolative dielectric composites also exhibited good mechanical performances and good thermostability, with a tensile strength of 71.7 MPa, a tensile modulus of 1.91 GPa, a breaking elongation of 16.4%, and a mass loss temperature at 5% of 336 C.

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“…Herein, a novel modified MWCNTs with a one core‐two shell structure, where the acid‐treated MWCNTs ( a MWCNTs) are core encapsulated by the PANI/poly(sodium 4‐styrenesulfonate) (PSS) shells (denoted as a MWCNTs@PANI‐PSS), were synthesized by in situ polymerization and electrostatic self‐assembly methods (showed in Figure ). Nanostructured PANI not only possesses a high dielectric constant but also can be easily induced polymerization on the surface of CNTs by strong π‐π electronic interaction . Due to positive charges of PANI layer, negatively charged PSS could be adsorbed onto the surface of a MWCNTs@PANI by electrostatic interaction, which could endow a MWCNTs with a lower electrical conductivity and an excellent dispersion in polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Enhanced dielectric properties of polymer composite films induced by encapsulated MWCNTs with a one core‐two shell structure

Wang

2017

J Polym Sci B Polym Phys

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Multiwalled carbon nanotubes (MWCNTs) can endow high dielectric constant to polymer-based composites. However, the accompanying poor dispersion of MWCNTs and high dielectric loss for composites severely limit their application in dielectric field. Herein, a modified acid-treated MWCNTs encapsulated by the polyaniline/poly(sodium 4-styrenesulfonate) layers (aMWCNTs@PANI-PSS) with a one core-two shell structure was fabricated by in situ polymerization followed by electrostatic self-assembly technique. Furthermore, the composite films based on aMWCNTs@PANI-PSS/poly(vinylidenefluoridehexaflouropropylene) (PVDF-HFP) were fabricated by a solutioncasting method. An ultrathin insulating PSS shell is wrapped onto aMWCNTs@PANI, resulting in the improvement of dispersibility for aMWCNTs@PANI and the decrease of dielectric loss for composite films. When the content of aMWCNT-s@PANI-PSS is 5.0 wt %, the dielectric constant of aMWCNT-s@PANI-PSS/PVDF-HFP reaches 430 (100 Hz), which is about 55 times of pure PVDF-HFP and 1.7 times of aMWCNTs@PANI/ PVDF-HFP (247). Besides, the responding dielectric loss of aMWCNTs@PANI-PSS/PVDF-HFP composite film is only 0.67, much lower than that of aMWCNTs@PANI/PVDF-HFP (25) and aMWCNTs/PVDF-HFP (3185). V C 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017, 55, 948-956

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High dielectric constant polyaniline/sulfonated poly(aryl ether ketone) composite membranes with good thermal and mechanical properties

Cited by 9 publications

References 22 publications

A Universal Method to Enhance Flexibility and Stability of Organic Solar Cells by Constructing Insulating Matrices in Active Layers

A Universal Method to Enhance Flexibility and Stability of Organic Solar Cells by Constructing Insulating Matrices in Active Layers

Preparation and dielectric properties of sulfonated poly(aryl ether ketone)/acidified graphite nanosheet composites

Enhanced dielectric properties of polymer composite films induced by encapsulated MWCNTs with a one core‐two shell structure

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