Polyaniline-cobalt hydroxide hybrid nanostructures and their supercapacitor studies

Shendkar, Janardhan H.; Zate, Manohar K.; Tehare, Kailas K.; Jadhav, Vijaykumar V.; Mane, Rajaram S.; Naushad, Mu.; Yun, Je Moon; Kim, Kwang Ho

doi:10.1016/j.matchemphys.2016.05.070

Cited by 37 publications

(22 citation statements)

References 53 publications

(38 reference statements)

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“…Fig. 1b (PAni 2) shows the formation of nanosheets, as observed by Shendkar et al [9] and Tao et al [15,16]; the longer polymerization time (24 h) contributed to the formation of this morphology. In Fig.…”

Section: Resultssupporting

confidence: 67%

“…In recent years, several morphologies of PAni nanostructures have been reported, including nanofibers [5,6,[8][9][10][11][12][13][14], nanosheets [9,15,16], and nanoflowers [7,15,[17][18][19][20][21]. These nanostructures have been widely studied because of their promising application in nanomaterials and nanodevices [5,9,15]. Some of these morphologies, in general, have high crystallinity and consequently higher conductivity, which may further increase their application potential.…”

Section: Introductionmentioning

confidence: 99%

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Different morphologies of polyaniline nanostructures synthesized by interfacial polymerization

et al. 2018

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In this study, different morphologies of polyaniline (PAni) nanostructures were obtained via interfacial polymerization. The influence of the time and temperature of polymerization on morphology was investigated. At room temperature the growth of nanosheets and nanoflowers with long polymerization time (1-5 days) was observed. In the syntheses carried out at 50°C the same nanostructures were obtained with only a few hours of polymerization, which illustrates that the increase in temperature considerably reduced the synthesis time and also provided the growth of nanofibers, morphology not found in the syntheses performed at room temperature. The characterization by XRD indicated the presence of diffraction peaks characteristic of PAni nanostructures with high crystallinity. As the conductivity of PAni is directly related to its crystallinity, it is expected that the nanostructures obtained have high conductivity, which may represent a greater potential for diverse applications. It can be concluded that the proposed synthesis presents a simple alternative for obtaining PAni nanostructures with different morphologies and high crystallinity.

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Section: Resultssupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Different morphologies of polyaniline nanostructures synthesized by interfacial polymerization

et al. 2018

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“…The outer charge (q o ) contribution is projected by outer electrochemical surface indicated by direct contact region of electrode and electrolyte. But the inner charge (q i ) contribution is from the sections of voids, grain boundaries, pores, crevices, and cracks etc 27 . The overall charge (q t ) which includes the whole outer and inner active cavities assessed after the extrapolation obtained from ‘1/q’ versus ‘v 1/2 ’ ( Fig.…”

Section: Outcomes and Discussionmentioning

confidence: 99%

V2O5 encapsulated MWCNTs in 2D surface architecture: Complete solid-state bendable highly stabilized energy efficient supercapacitor device

Pandit

Dubal

Gómez‐Romero

et al. 2017

Sci Rep

159

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A simple and scalable approach has been reported for V2O5 encapsulation over interconnected multi-walled carbon nanotubes (MWCNTs) network using chemical bath deposition method. Chemically synthesized V2O5/MWCNTs electrode exhibited excellent charge-discharge capability with extraordinary cycling retention of 93% over 4000 cycles in liquid-electrolyte. Electrochemical investigations have been performed to evaluate the origin of capacitive behavior from dual contribution of surface-controlled and diffusion-controlled charge components. Furthermore, a complete flexible solid-state, flexible symmetric supercapacitor (FSS-SSC) device was assembled with V2O5/MWCNTs electrodes which yield remarkable values of specific power and energy densities along with enhanced cyclic stability over liquid configuration. As a practical demonstration, the constructed device was used to lit the ‘VNIT’ acronym assembled using 21 LED’s.

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“…7a]. The estimation of total charge ( q t *) can be obtained by the extrapolation of charge q * to v = 0, from the plot of v 1/2 vs. 1/ q * [43, 44, 45] [Fig. 7b].…”

Section: Resultsmentioning

confidence: 99%

Hybrid composite polyaniline-nickel hydroxide electrode materials for supercapacitor applications

Shendkar¹,

Jadhav

Shinde

et al. 2018

Heliyon

Self Cite

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Pristine and nanocomposite (NC) hybrid electrodes of polyaniline (PANI)-nickel hydroxide [Ni(OH)2] have been prepared by single and two-step electrodeposition processes, respectively, onto stainless-steel (SS) substrates. Enhanced reversibility and stability of amorphous PANI- Ni(OH)2 NC electrodes compared to single electrode materials have been explored. PANI has a nanofibrous morphology, Ni(OH)2 has nanoplatelet-type morphology, and the NC electrodes retain an overall nanofibrous morphology. The maximum specific capacitance (SC), obtained from integrated charge under voltammetric conditions, for PANI (electro-deposited for 5 min), NC (electrodeposition of Ni(OH)2 for 10 min and 20 min onto PANI electrode surface) and Ni(OH)2 (electrodeposited for 10 min) electrodes, are 0.59, 39.06, 32.36, and 113.8 F/g, respectively, suggesting higher electrochemical performance of Ni(OH)2 electrode compared to PANI and NC electrodes. The retention in SC values with faster scan rates from 10 to 100 mV/s for PANI, NC (10 min), NC (20 min) and Ni(OH)2 are 38.7, 61.1, 52.4, and 29.0 %, respectively, explicitly confirming a higher reversibility in NC electrodes. The retention in SC values with increase of cycle number up to 1000 for PANI, NC (10 min), NC (20 min) and Ni(OH)2 electrodes are 34.9, 61.5, 67.5, and 40.7 % respectively, demonstrating higher electrochemical stability of NC electrodes over pure-phase electrodes. Nearly 2.15, 79.36, 66.66 and 406.83 mC/cm2 charges on PANI, NC (10 min), NC (20 min) and Ni(OH)2 electrodes, respectively, are obtained. Inner to total charge and outer to total charge ratios have been used to explain contributing sites to total charge in pristine and NC electrodes.

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Polyaniline-cobalt hydroxide hybrid nanostructures and their supercapacitor studies

Cited by 37 publications

References 53 publications

Different morphologies of polyaniline nanostructures synthesized by interfacial polymerization

Different morphologies of polyaniline nanostructures synthesized by interfacial polymerization

V2O5 encapsulated MWCNTs in 2D surface architecture: Complete solid-state bendable highly stabilized energy efficient supercapacitor device

Hybrid composite polyaniline-nickel hydroxide electrode materials for supercapacitor applications

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