Hydrothermal direct synthesis of polyaniline, graphene/polyaniline and N-doped graphene/polyaniline hydrogels for high performance flexible supercapacitors

Zou, Yubo; Zhang, Zhicheng; Zhong, Wenbin; Yang, Wantai

doi:10.1039/c8ta01366g

Cited by 171 publications

(133 citation statements)

References 54 publications

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“…However, the O─C═O peak was absent in the C1s spectra of PC4 (Figure C). Such phenomenon was caused by strong π‐π interaction between PANI and N‐CDs, which decreased to trigger and improve conjugation during the in situ oxidative polymerization of ANI monomer . The strong interactions facilitated the electron transport and reinforced mechanical stability of the hybrids.…”

Section: Resultsmentioning

confidence: 99%

“…Such phenomenon was caused by strong π-π interaction between PANI and N-CDs, which decreased to trigger and improve conjugation during the in situ oxidative polymerization of ANI monomer. 42 The strong interactions facilitated the electron transport and reinforced mechanical stability of the hybrids. As the mass amount of N-CDs increased, the interactions between PANI and carbon dots gradually changed from intermolecular hydrogen bond forces to π-π conjugate forces, which will increase the conductivity and improve electrochemical performances.…”

Section: Morphology and Structure Characterizationmentioning

confidence: 99%

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Morphology‐dependent electrochemical performance of nitrogen‐doped carbon dots@polyaniline hybrids for supercapacitors

et al. 2019

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Summary In this work, the binary N‐CDs@PANI hybrids were fabricated by introducing zero‐dimensional nitrogen‐doped carbon dots (N‐CDs) into reticulated PANI. Firstly, N‐CDs were prepared by one‐pot microwave method, and then, the N‐CDs were introduced into in situ oxidative polymerization of aniline (ANI) monomer. The N‐CDs with abundant functional groups and high electronic cloud density played a significant role in guiding the polyaniline‐ordered growth into intriguing morphologies. Moreover, morphology‐dependent electrochemical performances of N‐CDs@PANI hybrids were investigated and N‐CDs improve static interaction and enhance the special capacitances in the N‐CDs@PANI hybrids. Especially, the specific capacitance of PC4 hybrid can reach 785 F g−1, which exceed that of pure PANI (274 F g−1) at current density of 0.5 A g−1 according to three‐electrode measurement. And the capacitance retention of the PC4 hybrid still keeps 70% after 2000 cycles of charge and discharge. The N‐CDs@PANI hybrids can have potential applications in electrode materials, supercapacitors, nonlinear optics, and microwave absorption.

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Section: Resultsmentioning

confidence: 99%

Section: Morphology and Structure Characterizationmentioning

confidence: 99%

Morphology‐dependent electrochemical performance of nitrogen‐doped carbon dots@polyaniline hybrids for supercapacitors

et al. 2019

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“…To improve the mechanical properties and flexibility of the pristine CP‐based conductive hydrogels, various hybrid CP hydrogels have been developed as electrode materials for flexible supercapacitors. So far, PVA is the most commonly used flexible substrate for CPs hybrid hydrogels while PAAM, graphene oxide/graphene, sodium alginate and G‐Zn‐tPy have also been used for the same purpose. These hybrid hydrogels can be highly stretchable, foldable, compressible, and even self‐healable, promising for applications in portable/wearable electronics.…”

Section: Flexible Supercapacitors From Cp‐based Hydrogelsmentioning

confidence: 99%

“…To further improve the electrical and mechanical properties, PANI/graphene hybrid hydrogels were prepared by a hydrothermal treatment of a soluble PANI dispersion . A flexible solid‐state supercapacitor based on this hybrid hydrogel electrode displayed a high areal specific capacitance of 484 mF cm −2 and an energy density of 42.96 mWh cm −2 . Another binary network gel composed of PPy and an acetonitrile‐based supromolecular gel (G‐Zn‐tPy) with a cubic architecture was also prepared (Figure b–d).…”

Section: Flexible Supercapacitors From Cp‐based Hydrogelsmentioning

confidence: 99%

Conducting Polymers for Flexible Supercapacitors

Han

Dai

2019

Macro Chemistry & Physics

185

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Owing to their tunable conductivity, good processability, environmental friendliness, and unique doping–dedoping characteristics, conducting polymer (CP)‐based flexible supercapacitors have been widely investigated. Inclusion of CPs into flexible substrates has been demonstrated to be an efficient way for fabricating CP‐based flexible supercapacitors. This paper provides a focused review on recent progresses in the research and development of CP‐based flexible supercapacitors. The synthesis and electrochemical performances of CP‐based hydrogels, including the pristine CP hydrogels, hybrid hydrogels, and all in one supercapacitors, are highlighted. The latest progress in the development of flexible supercapacitors based on binary and ternary hybrid films consisting of CP/carbon nanotubes, CP/graphene, or CP/graphene/carbon nanotubes is discussed. Furthermore, a brief summary of the use of CP‐based textiles and fibers for flexible supercapacitors is also presented, along with the current challenges and future perspectives for CP‐based supercapacitors.

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“…The low‐temperature synthesis of freestanding hBNNS is promising for the applications, but it is still a great challenge up to now. Hydrothermal is a typical low‐temperature synthetic method that has many advantages in mass production, green synthesis, and high crystallinity . As reported in literatures, the hBN quantum dots (hBNQDs) or micro/nanocrystals could be obtained under normal hydrothermal conditions.…”

Section: Introductionmentioning

confidence: 99%

Halides‐Assisted Low‐Temperature Synthesis of Hexagonal Boron Nitride Nanosheets

Wang

Cheng

et al. 2019

Part & Part Syst Charact

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Hexagonal boron nitride nanosheets (hBNNS) have various promising applications in dielectric and thermal conductive materials. However, in the bottom‐up method, well‐crystallized hBNNS could only be attained at very high temperatures. In this paper, a facile halide‐assisted hydrothermal assembly (HAHTA) method for the low‐temperature synthesis of well‐crystallized hBNNS is prepared. In HAHTA, the lateral growth of hBNNS is enhanced by the halide addition in the precursor, and the dimension reaches several micrometers. In addition, the obtained hBNNS enhance the oxidization resistance of vanadium dioxide (VO2) though the formation of a VO2/hBN composite, which is meaningful in facilitating the potential applications of VO2 as smart phase transition materials.

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Hydrothermal direct synthesis of polyaniline, graphene/polyaniline and N-doped graphene/polyaniline hydrogels for high performance flexible supercapacitors

Abstract: Polyaniline, graphene/polyaniline and N-doped graphene/polyaniline hydrogels are directly synthesized through a hydrothermal process, promising for applications in high-performance flexible supercapacitors.

Cited by 171 publications

References 54 publications

Morphology‐dependent electrochemical performance of nitrogen‐doped carbon dots@polyaniline hybrids for supercapacitors

Morphology‐dependent electrochemical performance of nitrogen‐doped carbon dots@polyaniline hybrids for supercapacitors

Conducting Polymers for Flexible Supercapacitors

Halides‐Assisted Low‐Temperature Synthesis of Hexagonal Boron Nitride Nanosheets

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