Synthesis of feather fan-like PANI electrodes for supercapacitors

Li, Ting; Wang, Xue; Liu, Pengyun; Yang, Bin; Diao, Shen; Gao, Yuan

doi:10.1016/j.synthmet.2019.116194

Cited by 19 publications

(4 citation statements)

References 28 publications

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“…Up to now, there have been few studies of all-solid supercapacitors based on ionic liquid gel electrolytes. Poly(3,4-ethylenedioxythiophene) (PEDOT) [ 13 ], Polypyrrole (PPy) [ 14 ], and Polyaniline (PANI) [ 15 ] are widely used as conductive polymer materials for supercapacitor electrodes because they produce the Faraday oxidation–reduction process of false capacitance and have high specific capacitance. The conductive polymer PANI undergoes the process of doping and redox of undoping electrolyte ions to store electric energy.…”

Section: Introductionmentioning

confidence: 99%

An All-Solid-State Flexible Supercapacitor Based on MXene/MSA Ionogel and Polyaniline Electrode with Wide Temperature Range, High Stability, and High Energy Density

et al. 2023

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In this study, an ionogel electrolyte (PAIM-X) consisting of 1-vinyl-3-methylimidazole bis (trifluoromethyl sulfonyl) imide ([VMIM][TFSI]), Polyacrylamide (PAAm), and MXene were prepared. The conductivity of PAIM-X and integral area of the voltammetric curve of the supercapacitor (PAIMSC) were improved by adding MXene. The addition of [VMIM][TFSI] enhanced the conductivity and applicable temperature of the ionogel electrolyte. At 90 °C, the conductivity of PAIM-4 can reach 36.4 mS/cm. In addition, spherical polyaniline with good electrochemical properties was synthesized and coated on graphite paper as an active substance. An all-solid-state supercapacitor was composed of PAIM-4, polyaniline electrode with 1.2 V potential window, pseudo-capacitors and high quality capacitors. The solvent 1-ethyl-3-methylimidazolium bis (trifluoromethyl sulfonyl imide) ([EMIM][TFSI]) and methanesulfonic acid (MSA) were introduced into the ionogel to promote the redox reaction of polyaniline (PANI). The mass specific capacitance of PAIMSC was 204.6 F/g and its energy density could reach 40.92 Wh/kg, which shows great potential for practical application at high temperature. The device had good rate performance and cycle performance, and its capacitance retention rate was still 91.56% after 10,000 cycles. In addition, the supercapacitor can work within the temperature range of −20 °C to 90 °C. These excellent electrochemical properties indicate that PAAm/IL/Mxene-X has broad application space and prospect.

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Section: Introductionmentioning

confidence: 99%

An All-Solid-State Flexible Supercapacitor Based on MXene/MSA Ionogel and Polyaniline Electrode with Wide Temperature Range, High Stability, and High Energy Density

et al. 2023

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“…As a result, the critical role of introducing a suitable inorganic acid and controlling the acidic degree of the reactive medium for seed formation could be observed in the enhancement of the charge-storage capacity of the PANI nanofibers. The maximum special capacitance for PANI-H in this work was better than the values for neat PANI materials such as PANI nanoparticles, − nanorods, , nanobelts, nanotubes, and nanofibers, ,, as well as composites with fly ash, carbon nitride, a nitride sphere, PMO 12 , and carbon nanotube (CNT) . Clearly, PANI nanofibers prepared in a HCl solution at a pH value of 3 could provide a relatively large electrode/electrolyte contact area and highly oriented polymeric chains, which would greatly improve the utilization of active materials and, as a result, greatly boost the capacitance performance.…”

Section: Resultsmentioning

confidence: 76%

Tuning the Assembly Process of Polyaniline Nanofibers by Adjusting the Acidic Nature and Solution Acidity toward Enhancing Electrochemical Charge Storage

Qin

Zhao

et al. 2023

ACS Appl. Nano Mater.

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Having easy control of the morphology and structure as well as large-scale production, seed polymerization has exhibited great potential to fabricate polyaniline (PANI) nanofibers as high-performance electrode materials for the supercapacitors. Herein the self-assembly of oligomer seeds was first constructed by chemical oxidation of aniline in a dilution solution by regulating the acidity and especially the nature of inorganic acids including hydrochloric acid (HCl), sulfuric acid (H2SO4), and phosphoric acid (H3PO4), and then the successive growth of PANI nanofibers was carried out at high aniline concentration in a HCl solution. It was found that the charge-storage ability of PANI nanofibers can be greatly affected by the nanofibrous morphology and chain orientation that are more strongly related to the self-assembly behavior of nanofibrous oligomers as the seeds. It is found that the nature and acidity of inorganic acids have only a slight influence on the morphology, but a significant change occurred in the structure of the resulting PANI nanofibers. Especially, the nanofibers prepared by using the seeds in a HCl solution with a pH value of 3 possess a maximum specific capacitance of 504 F·g–1 at a current density of 1 A·g–1, holding a capacitance retention value of 90% within the range of the current density from 1 to 10 A·g–1. Furthermore, the symmetric supercapacitor with a sandwich structure was assembled that could deliver a maximum energy density of 17.8 Wh·kg–1 at a power density of 416.1 W·kg–1, accompanied by a capacitance retention value of 70.2% after 2000 cycles. Small-diameter and highly oriented chains as well as high conductivity are in favor of fast penetration of an electrolyte and ion diffusion along with a shortening of the charge-transfer distance, which could contribute to the strong charge-storage ability of PANI nanofibers.

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“…Samples were examined over a wide range from 4000 to 500 cm −1 . The peaks of pure PANI observed, including broad peaks in the range of 3037-3319 cm −1 , were due to N-H bond stretching vibrations of secondary amino groups, 28,29 and other peaks observed at 1568 cm −1 and 1043 cm −1 were attributed to the C]C stretching of the quinoid ring in PANI, and (N]Q]N). 30,31 Moreover, benzene rings were identied by C-N and C-C peaks at 1304 and 1391 cm −1, respectively.…”

Section: Resultsmentioning

confidence: 95%

A highly efficient electrochemical sensor containing polyaniline/cerium oxide nanocomposites for hydrogen peroxide detection

2022

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Synthesis of feather fan-like PANI electrodes for supercapacitors

Cited by 19 publications

References 28 publications

An All-Solid-State Flexible Supercapacitor Based on MXene/MSA Ionogel and Polyaniline Electrode with Wide Temperature Range, High Stability, and High Energy Density

An All-Solid-State Flexible Supercapacitor Based on MXene/MSA Ionogel and Polyaniline Electrode with Wide Temperature Range, High Stability, and High Energy Density

Tuning the Assembly Process of Polyaniline Nanofibers by Adjusting the Acidic Nature and Solution Acidity toward Enhancing Electrochemical Charge Storage

A highly efficient electrochemical sensor containing polyaniline/cerium oxide nanocomposites for hydrogen peroxide detection

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