PANINFs synthesized electrochemically as an electrode material for energy storage application

Waikar, Maqsood R.; Shaikh, Anis; Sonkawade, R. G.

doi:10.1007/s00289-018-2634-1

Cited by 21 publications

(10 citation statements)

References 50 publications

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“…There is also a broad diffraction peak at 2‐theta of 26.3°, which is a common feature of all diffraction patterns, an indication of the amorphous nature of CNF 22 . With excess PANI deposition, however, diffraction peaks become broad and week, indicating PANI has a broad, low‐intensity amorphous peak 23 . Further, few peaks disappear in the PANI/MXene/CNF‐3 diffraction pattern it could be attributed to the even deposition of PANI over the nanofibers 18 …”

Section: Resultsmentioning

confidence: 91%

Flexible polyaniline/MXene/CNF composite nanofibrous mats as high‐performance supercapacitor electrodes

Donthula,

Malothu,

Araga

et al. 2023

Polymer Composites

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In this study, we presented a facile synthesis of ternary composite by depositing polyaniline (PANI) onto electrospun MXene‐embedded carbon nanofibers (CNF) using in situ polymerization. Polymerization duration was varied between 2 and 8 hours to tune fiber diameter and surface area. The physicochemical properties of binary and ternary composites were characterized, such as surface morphology and chemical functional groups and surface area and pore volume. Results indicated that the fiber diameter and micropore volume increased with the deposition of PANI. In order to examine the effect of PANI deposition and other electrode properties on electrochemical performance, electrochemical impedance, galvanostatic charge–discharge, and cyclic voltammetry tests were performed. Flexible binder‐free PANI/MXene/CNF composite electrode with maximum PANI deposition exhibited the maximum specific capacitance of 356 F g−1 at current density of 0.5 A g−1. Further, this electrode demonstrated excellent capacitance retention after 5000 cycles, with 91%. The ternary composite's outstanding performance is primarily related to PANI's enhanced surface area and micropore volume as well as pseudocapacitive charge storage.Highlights Synthesis of a flexible binder‐free novel ternary composite electrode. In‐situ PANI deposition to enhances the ternary electrode surface area and wettability. Flexible ternary composite electrodes with maximum PANI loading exhibit excellent electrochemical performance. Comparison of binary and ternary electrode performance with pristine carbon nanofibers.

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Section: Resultsmentioning

confidence: 91%

Flexible polyaniline/MXene/CNF composite nanofibrous mats as high‐performance supercapacitor electrodes

Donthula,

Malothu,

Araga

et al. 2023

Polymer Composites

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“…The surface wettability, in addition to SEM micrographs of the (PANI-HCl)/Al(NO 3 ) 3 complex composite films with various Al(NO 3 ) 3 concentrations, was studied to understand the physicochemical interactions between polymer matrix and Al(NO 3 ) 3 ( Figure 4 ). The WCA for PANI-HCl film was 38°, which means that the PANI-HCl film exhibited a hydrophilic nature [ 45 ]. Increasing Al(NO 3 ) 3 in (PANI-HCl)/Al(NO 3 ) 3 complex composite films reduced the WCA continuously until it reached 20° at Al(NO 3 ) 3 concentration of 32 wt.%, which means that increasing Al(NO 3 ) 3 concentration in (PANI-HCl)/Al(NO 3 ) 3 complex composite films enhanced the hydrophilicity nature of the film surface, which was attributed to a decrease in the average diameter of rod-like shapes and a reduction in the surface roughness.…”

Section: Resultsmentioning

confidence: 99%

Surface Plasmon Resonance Sensitivity Enhancement Based on Protonated Polyaniline Films Doped by Aluminum Nitrate

et al. 2022

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Complex composite films based on polyaniline (PANI) doped hydrochloric acid (HCl) incorporated with aluminum nitrate (Al(NO3)3) on Au-layer were designed and synthesized as a surface plasmon resonance (SPR) sensing device. The physicochemical properties of (PANI-HCl)/Al(NO3)3 complex composite films were studied for various Al(NO3)3 concentrations (0, 2, 4, 8, 16, and 32 wt.%). The refractive index of the (PANI-HCl)/Al(NO3)3 complex composite films increased continuously as Al(NO3)3 concentrations increased. The electrical conductivity values increased from 5.10 µS/cm to 10.00 µS/cm as Al(NO3)3 concentration increased to 32 wt.%. The sensitivity of the SPR sensing device was investigated using a theoretical approach and experimental measurements. The theoretical system of SPR measurement confirmed that increasing Al(NO3)3 in (PANI-HCl)/Al(NO3)3 complex composite films enhanced the sensitivity from about 114.5 [Deg/RIU] for Au-layer to 159.0 [Deg/RIU] for Au-((PANI-HCl)/Al(NO3)3 (32 wt.%)). In addition, the signal-to-noise ratio for Au-layer was 3.95, which increased after coating by (PANI-HCl)/Al(NO3)3 (32 wt.%) complex composite layer to 8.82. Finally, we conclude that coating Au-layer by (PANI-HCl)/Al(NO3)3 complex composite films enhances the sensitivity of the SPR sensing device.

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“…[ 17,18 ] PANI has attracted much attention due to its low cost, easy fabrication, and controllable conductivity depending on doping/undoping. [ 19,20 ] The incorporation of PANI leads to the improved electrochemical performance of MXene‐based energy storage composites. For example, Xu et al.…”

Section: Introductionmentioning

confidence: 99%

“…[ 21 ] It has been suggested that high surface area plays an important role in energy storage. [ 20,22 ] Nanostructured PANI with high surface area, such as polyaniline nanotubes, polyaniline nanoribbons, and polyaniline nanofibers (PANINFs), could be easily percolated, which improves the utilization of active sites on the surface and the transport of electrolyte ions. [ 2,20,23 ] For example, Wu et al.…”

Section: Introductionmentioning

confidence: 99%

“…[ 20,22 ] Nanostructured PANI with high surface area, such as polyaniline nanotubes, polyaniline nanoribbons, and polyaniline nanofibers (PANINFs), could be easily percolated, which improves the utilization of active sites on the surface and the transport of electrolyte ions. [ 2,20,23 ] For example, Wu et al. constructed hierarchical Ti 3 C 2 nanosheets/polyaniline nanotubes composites by in situ polymerization to improve the specific capacitance of supercapacitor.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Sandwiched Porous MXene/Polyaniline Nanofibers Composite Film for High Capacitance Supercapacitor Electrode

Chen

Song

Zhou

et al. 2021

Adv Materials Inter

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As a class of promising 2D material, MXenes are widely applied to energy storage systems (ESSs) due to metallic conductivity and high electrochemical activities, but the restacking problem during electrode preparation restricts their electrochemical performances. Herein, polyaniline nanofibers (PANINFs) are used as conductive interlayer spacers to induce the self‐assembly of MXene (Ti3C2Tx)‐based electrode. The favored sandwiched porous structure is formed due to the electrostatic adsorption and hydrogen bond interaction between the positively charged PANINFs and the negatively charged Ti3C2Tx nanosheets, which provide abundant accessible sites and facilitate the diffusion of ions. As a result, the flexible freestanding Ti3C2Tx/PANINFs composite electrode exhibits high conductivity (1373.3 S cm–1) and excellent gravimetric capacitance of 645.7 F g–1. Due to the enhanced structural stability, it achieves impressive cycling stability of 98% capacitance retention after 5000 cycles, which is significantly improved from that of pristine Ti3C2Tx electrode (84.6%). This work provides a feasible strategy for the structure regulation and performance enhancement of MXene‐based supercapacitors, which has great potential in energy storage systems.

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PANINFs synthesized electrochemically as an electrode material for energy storage application

Cited by 21 publications

References 50 publications

Flexible polyaniline/MXene/CNF composite nanofibrous mats as high‐performance supercapacitor electrodes

Flexible polyaniline/MXene/CNF composite nanofibrous mats as high‐performance supercapacitor electrodes

Surface Plasmon Resonance Sensitivity Enhancement Based on Protonated Polyaniline Films Doped by Aluminum Nitrate

A Novel Sandwiched Porous MXene/Polyaniline Nanofibers Composite Film for High Capacitance Supercapacitor Electrode

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