Morphology-controlled fabrication of polypyrrole hydrogel for solid-state supercapacitor

Bo, Jinyu; Luo, Xiaofeng; Huang, Huabo; Li, Liang; Lai, Wei; Yu, Xianghua

doi:10.1016/j.jpowsour.2018.10.064

Cited by 117 publications

(71 citation statements)

References 40 publications

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“…49 Nanocellulose-mediated electroconductive self-healing hydrogels have also been prepared from a viscoelastic polyvinyl alcohol-borax (PB) gel matrix and nanostructured CNF-PPy (cellulose nanoberspolypyrrole) complexes, exhibiting high strength, viscoelasticity, and biocompatibility toward multifunctional applications and has a conductivity in the range 1.5-4.8 S m À1 which linearly correlates with the amount of PPy added. 50 The use of PPy as a hydrogel for solid-state supercapacitor applications are popular investigations, for example, in the morphologycontrolled fabrication of a pure polypyrrole hydrogel without cross-linkers, 51 or a hydrogel-based composite with PVA/ graphene-oxide/PPy components for elastic supercapacitor applications. 52 Polypyrrole nanober/NiO x composites have also been reported in a facile synthesis using a microwave method with results showing its potential application as a supercapacitor.…”

Section: Introductionmentioning

confidence: 99%

Formation of dialysis-free Kombucha-based bacterial nanocellulose embedded in a polypyrrole/PVA composite for bulk conductivity measurements

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Formation of dialysis-free Kombucha-based bacterial nanocellulose embedded in a polypyrrole/PVA composite for bulk conductivity measurements

et al. 2020

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“…As a continuation of our interest concerning the synthesis of new composite materials, [12] the effect of PPy incorporation on the morphological and electric properties of PEGBA/ RAMEB polyrotaxane (3) cross-linked with HMDI was investigated. The first step for the synthesis of PEGBA/RAMEB polyrotaxane is the threading of PEGBA (1) into RAMEB cavities resulting in the formation of a polypseudorotaxane (2). Then, 2 was converted to the polyrotaxane 3 by attachment of bulky bromotriphenylmethane groups at the chain ends.…”

Section: Resultsmentioning

confidence: 99%

“…Conjugated polymers (CPs) have been actively investigated in the last decade due to their optoelectronic properties that can be tailored for specific applications in electronic devices, sensors, capacitors, actuators, and drug delivery. [1,2] However, the poor solubility in organic solvents and tendency to aggregate affect their charge-transport properties and limit their practical applicability. Recently, the synthesis of cross-linked materials is an effective way to achieve new composite compounds with enhanced solubility and photophysical characteristics.…”

Section: Introductionmentioning

confidence: 99%

Morphological and Electronic Properties of Poly(ethylene glycol)/RAMEB Polyrotaxane and Polypyrrole Supramolecular Networks

Resmeriță¹,

Asăndulesa²,

Farcas³

2020

Macro Chemistry & Physics

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well their mechanical properties. The crosslinked polyrotaxanes are characterized by high mobility of the junctions, which considerably diminished the internal tension when a stimulus is applied, providing the enhancements of mechanical properties. [6][7][8][9][10][11] The blending of the CPs into the matrix, in one step reaction, leads to a more homogeneous network compounds. Recently, our efforts are being made in this directions and a versatile synthetic strategy was applied for the synthesis of such supramolecular networks by cross-linking of an insulated polyrotaxane with π-conjugated polyrotaxanes. [12] Due to controllable electrical conductivity and good thermal stability of polypyrrole (PPy), this approach has also been applied to the synthesis of composite materials based on PEGBA polyrotaxane with randomly methylated β-cyclodextrins (RAMEB). [13][14][15] Herein, we report the synthesis and characterization of a new composite material obtained by cross-linking of PEGBA/RAMEB polyrotaxane with 1,6-hexamethylene diisocyanate (HMDI). The addition of 10 wt% PPy into the PEGBA/RAMEB matrix showed improved physical, morphological as well electrical properties of the resulted cross-linked material. Moreover, the influences of the temperature and frequency on the electrical properties of the investigated PEGBA/RAMEB/PPy compound were investigated and compared with those of the pure PEGBA/RAMEB crosslinked material.The effect of 10 wt% polypyrrole (PPy) incorporation on the evolution of conductivity, dielectric constant, and dielectric loss by varying the temperature and frequency of amine-terminated poly(ethylene glycol)/randomly methylated β-cyclodextrins (PEGBA/RAMEB) polyrotaxane cross-linked with 1,6-hexamethylene diisocyanate is reported. This composite material shows an enhanced dielectric constant value of 25.6 (at 10 Hz) compared with 8.3 of the pure cross-linked PEGBA/RAMEB polyrotaxane. The values of the dielectric constant are consistent with the dielectric loss and conductivity results. The composite material shows that the direct current conductivity (σ DC ) at lower temperature is independent of frequency. In comparison, at higher temperature, σ DC is dependent on frequency, denoting that the conductivity of the composite material is a thermally activated process. Moreover, the presence of PPy significantly influences the morphology of the cross-linked PEGBA/RAMEB polyrotaxane. Addition of PPy into PEGBA/RAMEB material seems to be very attractive and should provide an opportunity to obtain desirable electronic properties.

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“…26 –31 Due to the favorable electrical conductivity, unique hierarchical porous structure, and pesudocapacitive nature, the conducting polymer hydrogels can provide fast electron/ion transport and high specific capacitance and be used as high-performance electrode materials for SCs. 32 –36 Herein, MnO 2 -embedded 3-D porous PANI composite hydrogel was constructed via a facile one-pot synthesis. Owing to the uniform embedment of MnO 2 nanoparticles in the 3-D porous composite hydrogel, the composite system can act as an electrode without the additional forming process and achieve favorable SC performance even the electrode loading is as high as 10.78 mg cm –2 .…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of MnO₂-embedded 3-D porous polyaniline composite hydrogel for supercapacitor electrode with high loading

Huang

Chen

Yang

et al. 2019

High Performance Polymers

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To obtain the promising pseudocapacitance of MnO2, the composite hydrogel of MnO2 and polyaniline (PANI) was fabricated using in situ polymerization of aniline hydrochloride in the aqueous solution containing commercial MnO2 nanoparticles and additives. Both scanning electron microscopy and transmission electron microscopy results indicated that the composite hydrogel exhibited a 3-D porous structure, within which MnO2 nanoparticles were uniformly embedded. The investigations of cyclic voltammetry, galvanostatic charge−discharge, and electrochemical impedance spectroscopy demonstrated superior supercapacitor (SC) performance of the hydrogel electrode even with high loading. The electrode with loading of 1.5 mg cm–2 showed a favorable specific capacitance (293 F g–1, 10 mV s–1), which only decreased to 258 F g–1 when the loading of the electrode was seven times higher (10.8 mg cm–2). Furthermore, the hydrogel electrode displayed good cycle stability in the acidic solution (81% capacitance retention after 1000 charge/discharge cycles). The favorable electrochemical performance of the composite hydrogel should be attributed to the fast electron/ion transport and good protection for MnO2 in the 3-D porous structure. Due to the facile one-pot synthesis and optimized nanostructure, it could be expected that MnO2-embedded 3-D porous PANI composite hydrogels have great application in the field of high-performance electrode with high loading for SCs.

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Morphology-controlled fabrication of polypyrrole hydrogel for solid-state supercapacitor

Cited by 117 publications

References 40 publications

Formation of dialysis-free Kombucha-based bacterial nanocellulose embedded in a polypyrrole/PVA composite for bulk conductivity measurements

Formation of dialysis-free Kombucha-based bacterial nanocellulose embedded in a polypyrrole/PVA composite for bulk conductivity measurements

Morphological and Electronic Properties of Poly(ethylene glycol)/RAMEB Polyrotaxane and Polypyrrole Supramolecular Networks

Facile fabrication of MnO₂-embedded 3-D porous polyaniline composite hydrogel for supercapacitor electrode with high loading

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Morphology-controlled fabrication of polypyrrole hydrogel for solid-state supercapacitor

Cited by 117 publications

References 40 publications

Formation of dialysis-free Kombucha-based bacterial nanocellulose embedded in a polypyrrole/PVA composite for bulk conductivity measurements

Formation of dialysis-free Kombucha-based bacterial nanocellulose embedded in a polypyrrole/PVA composite for bulk conductivity measurements

Morphological and Electronic Properties of Poly(ethylene glycol)/RAMEB Polyrotaxane and Polypyrrole Supramolecular Networks

Facile fabrication of MnO2-embedded 3-D porous polyaniline composite hydrogel for supercapacitor electrode with high loading

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Facile fabrication of MnO₂-embedded 3-D porous polyaniline composite hydrogel for supercapacitor electrode with high loading