The properties of highly compressible electrochemical capacitors based on polypyrrole/melamine sponge-carbon fibers

Chang, Yahui; Wang, Na; Han, Gaoyi; Li, Miaoyu; Xiao, Yaoming; Li, Honggang

doi:10.1016/j.jallcom.2019.01.365

Cited by 11 publications

(4 citation statements)

References 52 publications

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“…For example, the sponge penetrated with solid iron(III) chloride as oxidant was exposed to pyrrole vapours and thus coated with polypyrrole. The product was subsequently applied as a material for the rapid and efficient oil-water separation (Chen et al 2017a) or as a compressible electrochemical capacitor (Chang et al 2019). In interfacial method, pyrrole solution in cyclohexane was added to melamine sponge swollen with aqueous oxidant solution.…”

Section: Introductionmentioning

confidence: 99%

Conducting polypyrrole-coated macroporous melamine sponges: a simple toy or an advanced material?

et al. 2021

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The present feature article offers a concise overview of recent research progress of the authors working in the design of macroporous conducting materials represented by polypyrrole-coated melamine sponges. The article highlights innovative results from the authors and suggests a perspective for future directions in the field of macroporous conducting polymer composites. The article also overviews this particular subject area and defines key challenges for this emerging field. The feasibility of diverse applications of polypyrrole/melamine sponges is demonstrated and includes deformation-sensitive materials, electromagnetic radiation shielding and electrically heated insulation materials. Cytotoxicity is addressed with respect to applications in biomedicine, and the adsorption of an organic dye serves as an example of the uses in environmental water-pollution treatment. A single-step deposition of polypyrrole during the oxidative polymerization of pyrrole provides the uniform coating of the sponge with an organic conducting phase. The conductivity of sponges was of the order of 10 -3 S cm -1 , increased with polypyrrole loading, and also by two orders of magnitude after the compression. Derived materials have also been prepared and tested. They are represented by polypyrrole-coated sponge converted by pyrolysis to a macroporous nitrogencontaining carbon, magnetic ferrosponge obtained by incorporation of magnetite, or the conventional globular polypyrrole coating replaced with polypyrrole nanotubes. Polypyrrole can also be simply decorated with silver nanoparticles. The macroporous conducting polypyrrole/melamine sponges and derived materials are considered to be of future scientific interest with broad application potential.

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Section: Introductionmentioning

confidence: 99%

Conducting polypyrrole-coated macroporous melamine sponges: a simple toy or an advanced material?

et al. 2021

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“…Macroporous polymer materials have been coated with conducting polymers in studies conducted many years ago [16,17], as well as in more recent reports [18,19]. Melamine sponge can be modified in a similar manner with the conducting polymers, polyaniline [20][21][22] and polypyrrole [6,[23][24][25][26][27]. For example, melamine sponge coated with polyaniline was used for mass-spectrometric monitoring of perfluorooctane compounds [22] and for oil absorption [20].…”

Section: Introductionmentioning

confidence: 99%

“…Sponge coated with polypyrrole combined with dopamine and carbon nanotubes was used to reduce the oil viscosity in spills by Joule heating generated by passing a current [26]. The deposition of polypyrrole on melamine sponge with adsorbed graphene [23], graphene oxide [25] or incorporated carbon fibres [24] produced compressible supercapacitor electrodes. The single-step coating of melamine sponge with polypyrrole and magnetite generated a ferrosponge suitable for microwave radiation shielding [27].…”

Section: Introductionmentioning

confidence: 99%

Polypyrrole-Coated Melamine Sponge as a Precursor for Conducting Macroporous Nitrogen-Containing Carbons

et al. 2022

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Macroporous open-cell melamine sponges were coated with a conducting polymer, polypyrrole, during in-situ oxidative polymerization of pyrrole. Two samples, differing in polypyrrole content, 8.2 and 27.4 wt%, were prepared. They were exposed to various temperatures up to 700 °C in an inert atmosphere. The macroporous structure and mechanical integrity were preserved after this process. This converted both the polypyrrole coating and the melamine sponge to macroporous nitrogen-containing carbons. The changes in molecular structure in the course of carbonization were followed by elemental analysis and FTIR and Raman spectra. The specific surface area of polypyrrole-coated sponge increased from ca. 90 to ca. 300 m2 g−1 along with accompanying increase in the porosity. The conductivity of the sponges was recorded as a function of compression in a newly developed apparatus. The sponge containing 27.4 wt% pyrrole had conductivity of the order of 10−2 S·cm−1 at 0.1 MPa pressure, which was reduced by four orders of magnitude when exposed to 400–500 °C and nearly recovered after the temperature reached 700 °C. The sponges were tested in electromagnetic radiation shielding and displayed both radiation absorption and, to a lower extent, radiation reflection proportional mainly to the samples’ conductivity.

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“…It indirectly explained the effective payload of PmPD or Ti 3 C 2 T x /PmPD on the MF skeleton.In practical application, the good mechanical property of adsorbents is conducive to improving its cycle stability. Hence, the mechanical property of MF-based adsorbents was tested[47]. Figure4showed the pressure stress curves of the MF before being treated (MF-T), MF, MF/PmPD and MF/Ti 3 C 2 T x /PmPD at the deformation variables of 30%, 50% and 70%, respectively.…”

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confidence: 99%

Preparation of Three-Dimensional MF/Ti3C2Tx/PmPD by Interfacial Polymerization for Efficient Hexavalent Chromium Removal

Jin

Pan

et al. 2022

Nanomaterials

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Heavy metal pollution is a serious threat to human health and the ecological environment, but adsorption technology based on nano adsorbents can effectively treat the crisis. However, due to the nanoscale effect, nano adsorbents have some crucial shortcomings, such as recycling difficulty and the loss of nanoparticles, which seriously limit their application. The feasible assembly of nano adsorbents is an accessible technology in urgent need of a breakthrough. In this study, three-dimensional (3D) adsorbent (MF/Ti3C2Tx/PmPD) with excellent performance and favorable recyclability was prepared by interfacial polymerization with melamine foam (MF) as the framework, two-dimensional (2D) titanium carbide (Ti3C2Tx) as the bridge and Poly (m-Phenylenediamine) (PmPD) as the active nano component. The morphology, structure, mechanical property of MF/Ti3C2Tx/PmPD and reference MF/PmPD were investigated through a scanning electron microscope (SEM), Fourier transformed infrared spectra (FT-IR), Raman scattering spectra and a pressure-stress test, respectively. Owning to the regulation of Ti3C2Tx on the morphology and structure of PmPD, MF/Ti3C2Tx/PmPD showed excellent adsorption capacity (352.15 mg/g) and favorable cycling performance. R–P and pseudo-second-order kinetics models could well describe the adsorption phenomenon, indicating that the adsorption process involved a composite process of single-layer and multi-layer adsorption and was dominated by chemical adsorption. In this research, the preparation mechanism of MF/Ti3C2Tx/PmPD and the adsorption process of Cr(VI) were systematically investigated, which provided a feasible approach for the feasible assembly and application of nano adsorbents in the environmental field.

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The properties of highly compressible electrochemical capacitors based on polypyrrole/melamine sponge-carbon fibers

Cited by 11 publications

References 52 publications

Conducting polypyrrole-coated macroporous melamine sponges: a simple toy or an advanced material?

Conducting polypyrrole-coated macroporous melamine sponges: a simple toy or an advanced material?

Polypyrrole-Coated Melamine Sponge as a Precursor for Conducting Macroporous Nitrogen-Containing Carbons

Preparation of Three-Dimensional MF/Ti3C2Tx/PmPD by Interfacial Polymerization for Efficient Hexavalent Chromium Removal

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