---
_id: '14379'
abstract:
- lang: eng
  text: We report on a simple surfactant/template free chemical route for the synthesis
    of semi-polycrystalline polyaniline-graphite (SPani-graphite) composite and its
    application as an electroactive material in electrochemical charge storage. The
    synthesized material exhibits well-defined poly-crystallographic lattices in high
    resolution transmission electron micrographs and sharp peaks in x-ray diffraction
    spectra suggesting crystalline nature of the material. The specific capacitance
    computed from the galvanostatic charge-discharge (GCD) data obtained from 3-electrode
    cell configuration using 1 M aq. Na2SO4 as an electrolyte was 111.4 F g−1 at a
    current density of 0.1 A g−1 which rises to 269 F g−1 at an elevated current density
    of 1.0 A g−1. A similar pattern of increase in the specific capacitance values
    with an increase in the current density was observed in the results obtained from
    2-electrode symmetric device configuration using polymer gel electrolyte (xanthan
    gum in 1 M aq. Na2SO4). The specific capacitance computed from the GCD data obtained
    from the device configuration was 20 F g−1 at the current density of 1.0 A g−1.
    The device delivers an energy density of 1.7 Wh kg−1 and a power density of 2.48
    kWh kg−1 at an applied current density of 0.5 A g−1 suggesting an excellent rate
    capability and power management. In addition, the device exhibits ⁓92 % specific
    capacitance retention up to 8000 continuous GCD cycles and ⁓80 % coulombic efficiency
    up to 10,000 continuous GCD cycles indicating excellent cycling stability. The
    unique feature of increasing specific capacitance with respect to applied current
    density is attributed to the presence of semi-polycrystalline phases in the SPani-graphite
    matrix. The material behaves as a surface redox supercapacitor and its unique
    mechanism of charge storage is discussed in detail in the article.
acknowledgement: This work was supported by 2023 Yeungnam University Research Grant.
article_number: '117463'
article_processing_charge: No
article_type: original
author:
- first_name: Neelima
  full_name: Mahato, Neelima
  last_name: Mahato
- first_name: Saurabh
  full_name: Singh, Saurabh
  id: 12d625da-9cb3-11ed-9667-af09d37d3f0a
  last_name: Singh
  orcid: 0000-0003-2209-5269
- first_name: Mohammad
  full_name: Faisal, Mohammad
  last_name: Faisal
- first_name: T. V.M.
  full_name: Sreekanth, T. V.M.
  last_name: Sreekanth
- first_name: Sutripto
  full_name: Majumder, Sutripto
  last_name: Majumder
- first_name: Kisoo
  full_name: Yoo, Kisoo
  last_name: Yoo
- first_name: Jonghoon
  full_name: Kim, Jonghoon
  last_name: Kim
citation:
  ama: Mahato N, Singh S, Faisal M, et al. Polycrystalline phases grown in-situ engendering
    unique mechanism of charge storage in polyaniline-graphite composite. <i>Synthetic
    Metals</i>. 2023;299. doi:<a href="https://doi.org/10.1016/j.synthmet.2023.117463">10.1016/j.synthmet.2023.117463</a>
  apa: Mahato, N., Singh, S., Faisal, M., Sreekanth, T. V. M., Majumder, S., Yoo,
    K., &#38; Kim, J. (2023). Polycrystalline phases grown in-situ engendering unique
    mechanism of charge storage in polyaniline-graphite composite. <i>Synthetic Metals</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.synthmet.2023.117463">https://doi.org/10.1016/j.synthmet.2023.117463</a>
  chicago: Mahato, Neelima, Saurabh Singh, Mohammad Faisal, T. V.M. Sreekanth, Sutripto
    Majumder, Kisoo Yoo, and Jonghoon Kim. “Polycrystalline Phases Grown In-Situ Engendering
    Unique Mechanism of Charge Storage in Polyaniline-Graphite Composite.” <i>Synthetic
    Metals</i>. Elsevier, 2023. <a href="https://doi.org/10.1016/j.synthmet.2023.117463">https://doi.org/10.1016/j.synthmet.2023.117463</a>.
  ieee: N. Mahato <i>et al.</i>, “Polycrystalline phases grown in-situ engendering
    unique mechanism of charge storage in polyaniline-graphite composite,” <i>Synthetic
    Metals</i>, vol. 299. Elsevier, 2023.
  ista: Mahato N, Singh S, Faisal M, Sreekanth TVM, Majumder S, Yoo K, Kim J. 2023.
    Polycrystalline phases grown in-situ engendering unique mechanism of charge storage
    in polyaniline-graphite composite. Synthetic Metals. 299, 117463.
  mla: Mahato, Neelima, et al. “Polycrystalline Phases Grown In-Situ Engendering Unique
    Mechanism of Charge Storage in Polyaniline-Graphite Composite.” <i>Synthetic Metals</i>,
    vol. 299, 117463, Elsevier, 2023, doi:<a href="https://doi.org/10.1016/j.synthmet.2023.117463">10.1016/j.synthmet.2023.117463</a>.
  short: N. Mahato, S. Singh, M. Faisal, T.V.M. Sreekanth, S. Majumder, K. Yoo, J.
    Kim, Synthetic Metals 299 (2023).
date_created: 2023-10-01T22:01:13Z
date_published: 2023-11-01T00:00:00Z
date_updated: 2024-01-30T13:55:50Z
day: '01'
department:
- _id: MaIb
doi: 10.1016/j.synthmet.2023.117463
external_id:
  isi:
  - '001083568900001'
intvolume: '       299'
isi: 1
language:
- iso: eng
month: '11'
oa_version: None
publication: Synthetic Metals
publication_identifier:
  issn:
  - 0379-6779
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Polycrystalline phases grown in-situ engendering unique mechanism of charge
  storage in polyaniline-graphite composite
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 299
year: '2023'
...