Facile synthesis of polyaniline nanobelts for supercapacitor applications

Zhao, Yibo; Xu, Shuyue; Chang, Lu; He, Wenjing; Wu, Wei; Wang, Kean; Wang, Mingyan; Li, Dehui

doi:10.1016/j.matlet.2020.129207

Cited by 19 publications

(3 citation statements)

References 17 publications

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“…The comparison of the special capacitance and cycling stability of those PANI nanofibers with the values for PANI-based electrode materials reported recently is presented in Table S1. The capacitance retention of about 65% in this work was relatively high compared with previous reports, ,,,, further demonstrating the excellent rate capability for the PANI-H electrode. The greatly enhanced capacitance retention could be attributed to the low internal resistance, good conductivity, and high specific surface of the PANI nanofibers.…”

Section: Resultssupporting

confidence: 55%

“…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%

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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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Section: Resultssupporting

confidence: 55%

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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“…PPD, which has a molecular structure similar to that of aniline, can participate in the polymerization of aniline and thus improve the morphology of PANI nanofibers. , To investigate the effect of PPD dosage on the morphology of N-doped carbon nanofibers, pure PANI, PANI-1, PANI-2, and PANI-4 were separately carbonized at 700 °C; the obtained N-doped carbon nanofibers are labeled as CP, CP-1, CP-2, and CP-4, respectively. As shown in Figure A,B, the PANI nanofibers were short and became even shorter after carbonization, indicating that the carbonization process has a destructive effect on the integrity of the nanofibers.…”

Section: Resultsmentioning

confidence: 99%

High-Mass-Loading Electrodes Prepared by Carbonizing P-Phenylenediamine-Modified Polyaniline Nanofibers

Xu¹,

Zhao²,

He³

et al. 2022

Energy Fuels

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In this study, N-doped carbon nanofibers were prepared by carbonization using p-phenylenediamine (PPD)modified polyaniline nanofibers as precursors. The effects of PPD dosage, carbonization temperature, and potassium hydroxide (KOH) dosage on the performance of carbonized products were investigated in detail. The uniformity of the carbon nanofiber networks improved considerably using 2% PPD. Consequently, the specific capacitance of the carbon nanofibers at 0.5 A/g was enhanced by 42.5%. In addition, KOH activation increased the specific capacitance of the carbonized product to 273.3 F/g at 0.5 A/g. The product exhibited a lifespan of up to 4500 cycles with 87.2% retention. Remarkably, when the mass loading was increased to 16 mg/cm 2 , the product still possessed a high specific capacitance of 254 F/g at 0.5 A/g.

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Chemisynthesized tungsten oxide (WO3) electrodes for high-performance asymmetric supercapacitor application: effect of deposition time

Patil,

Nikam,

Lokhande

et al. 2023

J Mater Sci: Mater Electron

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Facile synthesis of polyaniline nanobelts for supercapacitor applications

Cited by 19 publications

References 17 publications

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

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

High-Mass-Loading Electrodes Prepared by Carbonizing P-Phenylenediamine-Modified Polyaniline Nanofibers

Chemisynthesized tungsten oxide (WO3) electrodes for high-performance asymmetric supercapacitor application: effect of deposition time

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