---
OA_type: closed access
_id: '18701'
abstract:
- lang: eng
  text: We developed in-situ engineered polycrystalline polythiophene (PTh) and its
    composite with reduced graphene oxide (PTh-rGO) via a simple chemical synthesis.
    The PTh-rGO-based electrodes in a symmetrical device with xanthan gum in 1 M aq.
    Na2SO4 as an electrolyte, delivers a specific capacitance (Csp) of 114.7 F g–1
    (electrode) and 28.7 F g–1 (cell) at an applied current density of 0.2 A g−1.
    The maximum energy and power densities recorded from the device were 588.0 mWh
    kg−1 and 1.1 kW kg−1 at 1.5 A g−1. The device exhibited a remarkable retention
    of Csp of 98.9 % over 10,000 continuous galvanostatic charge–discharge cycles
    highlighting an excellent performance. Electrochemical impedance spectroscopy
    analysis emphasizes material’s excellent structural integrity. This is attributed
    to the crystalline phases present in the matrix.
acknowledgement: This work was partly supported by the Institute of Information &
  Communications Technology Planning & Evaluation (IITP) grant funded by the Korea
  government (MSIT) (No.RS-2021-II210077) and Korea Institute of Energy Technology
  Evaluation and Planning (KETEP) grant funded by the Korea government (MOTIE)(RS-2024-00398346,
  ESS BigData-Based O&M and Asset Management Technical Manpower Training).
article_number: '137869'
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: T. V.M.
  full_name: Sreekanth, T. V.M.
  last_name: Sreekanth
- 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, Sreekanth TVM, Yoo K, Kim J. In-situ engineered highly-crystalline
    Polythiophene empowered electrochemical capacitor-II: Anomalous electrochemical
    charge storage behavior of Polythiophene-rGO composite. <i>Materials Letters</i>.
    2025;382. doi:<a href="https://doi.org/10.1016/j.matlet.2024.137869">10.1016/j.matlet.2024.137869</a>'
  apa: 'Mahato, N., Singh, S., Sreekanth, T. V. M., Yoo, K., &#38; Kim, J. (2025).
    In-situ engineered highly-crystalline Polythiophene empowered electrochemical
    capacitor-II: Anomalous electrochemical charge storage behavior of Polythiophene-rGO
    composite. <i>Materials Letters</i>. Elsevier. <a href="https://doi.org/10.1016/j.matlet.2024.137869">https://doi.org/10.1016/j.matlet.2024.137869</a>'
  chicago: 'Mahato, Neelima, Saurabh Singh, T. V.M. Sreekanth, Kisoo Yoo, and Jonghoon
    Kim. “In-Situ Engineered Highly-Crystalline Polythiophene Empowered Electrochemical
    Capacitor-II: Anomalous Electrochemical Charge Storage Behavior of Polythiophene-RGO
    Composite.” <i>Materials Letters</i>. Elsevier, 2025. <a href="https://doi.org/10.1016/j.matlet.2024.137869">https://doi.org/10.1016/j.matlet.2024.137869</a>.'
  ieee: 'N. Mahato, S. Singh, T. V. M. Sreekanth, K. Yoo, and J. Kim, “In-situ engineered
    highly-crystalline Polythiophene empowered electrochemical capacitor-II: Anomalous
    electrochemical charge storage behavior of Polythiophene-rGO composite,” <i>Materials
    Letters</i>, vol. 382. Elsevier, 2025.'
  ista: 'Mahato N, Singh S, Sreekanth TVM, Yoo K, Kim J. 2025. In-situ engineered
    highly-crystalline Polythiophene empowered electrochemical capacitor-II: Anomalous
    electrochemical charge storage behavior of Polythiophene-rGO composite. Materials
    Letters. 382, 137869.'
  mla: 'Mahato, Neelima, et al. “In-Situ Engineered Highly-Crystalline Polythiophene
    Empowered Electrochemical Capacitor-II: Anomalous Electrochemical Charge Storage
    Behavior of Polythiophene-RGO Composite.” <i>Materials Letters</i>, vol. 382,
    137869, Elsevier, 2025, doi:<a href="https://doi.org/10.1016/j.matlet.2024.137869">10.1016/j.matlet.2024.137869</a>.'
  short: N. Mahato, S. Singh, T.V.M. Sreekanth, K. Yoo, J. Kim, Materials Letters
    382 (2025).
date_created: 2024-12-22T23:01:47Z
date_published: 2025-03-01T00:00:00Z
date_updated: 2025-05-19T14:05:22Z
day: '01'
department:
- _id: MaIb
doi: 10.1016/j.matlet.2024.137869
external_id:
  isi:
  - '001433664000001'
intvolume: '       382'
isi: 1
language:
- iso: eng
month: '03'
oa_version: None
publication: Materials Letters
publication_identifier:
  eissn:
  - 1873-4979
  issn:
  - 0167-577X
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'In-situ engineered highly-crystalline Polythiophene empowered electrochemical
  capacitor-II: Anomalous electrochemical charge storage behavior of Polythiophene-rGO
  composite'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 382
year: '2025'
...
---
OA_type: closed access
_id: '15348'
abstract:
- lang: eng
  text: We report on synthesis of highly crystalline polythiophene and its application
    in supercapacitor electrodes. The material exhibits a remarkably stable electrochemical
    behavior and an excellent device performance. The device delivers an electrode
    specific capacitance (Csp) of 129.13F g−1, Cell Csp of 32.28F g−1 at 0.5 A/g;
    energy, and power densities of ∼ 3 Wh kg−1 and 250 W kg -1, respectively at 0.5
    A/g. Also, it exhibits an excellent retention of Cell Csp and coulombic efficiency
    up to ∼ 95 % over 10,000 continuous galvanostatic charge discharge (GCD) cycles
    indicating a remarkable performance by a standalone, pristine and undoped polythiophene.
    Electrochemical impedance spectroscopy (EIS) studies further suggest material’s
    stable capacitive behavior. The material’s enhanced electrochemical properties,
    stable behavior and outstanding performance in device application are attributed
    to the crystalline phases present in the polymer matrix achievable via a slow
    rate of synthesis; overall, an edge over other conventional synthesis methods.
acknowledgement: This research was supported by the Korea Evaluation Institute of
  Industrial Technology (No. 200116167, Development of Battery Safety Diagnosis System
  (BDS) SoC that predicts the internal state, explosion risk, remaining useful life,
  and replacement timing of electric vehicle batteries).
article_number: '136483'
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: T. V.M.
  full_name: Sreekanth, T. V.M.
  last_name: Sreekanth
- 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, Sreekanth TVM, Yoo K, Kim J. In-situ engineered highly
    crystalline polythiophene empowered electrochemical capacitor-I: Synthesis, characterization,
    and electrochemical charge storage. <i>Materials Letters</i>. 2024;365. doi:<a
    href="https://doi.org/10.1016/j.matlet.2024.136483">10.1016/j.matlet.2024.136483</a>'
  apa: 'Mahato, N., Singh, S., Sreekanth, T. V. M., Yoo, K., &#38; Kim, J. (2024).
    In-situ engineered highly crystalline polythiophene empowered electrochemical
    capacitor-I: Synthesis, characterization, and electrochemical charge storage.
    <i>Materials Letters</i>. Elsevier. <a href="https://doi.org/10.1016/j.matlet.2024.136483">https://doi.org/10.1016/j.matlet.2024.136483</a>'
  chicago: 'Mahato, Neelima, Saurabh Singh, T. V.M. Sreekanth, Kisoo Yoo, and Jonghoon
    Kim. “In-Situ Engineered Highly Crystalline Polythiophene Empowered Electrochemical
    Capacitor-I: Synthesis, Characterization, and Electrochemical Charge Storage.”
    <i>Materials Letters</i>. Elsevier, 2024. <a href="https://doi.org/10.1016/j.matlet.2024.136483">https://doi.org/10.1016/j.matlet.2024.136483</a>.'
  ieee: 'N. Mahato, S. Singh, T. V. M. Sreekanth, K. Yoo, and J. Kim, “In-situ engineered
    highly crystalline polythiophene empowered electrochemical capacitor-I: Synthesis,
    characterization, and electrochemical charge storage,” <i>Materials Letters</i>,
    vol. 365. Elsevier, 2024.'
  ista: 'Mahato N, Singh S, Sreekanth TVM, Yoo K, Kim J. 2024. In-situ engineered
    highly crystalline polythiophene empowered electrochemical capacitor-I: Synthesis,
    characterization, and electrochemical charge storage. Materials Letters. 365,
    136483.'
  mla: 'Mahato, Neelima, et al. “In-Situ Engineered Highly Crystalline Polythiophene
    Empowered Electrochemical Capacitor-I: Synthesis, Characterization, and Electrochemical
    Charge Storage.” <i>Materials Letters</i>, vol. 365, 136483, Elsevier, 2024, doi:<a
    href="https://doi.org/10.1016/j.matlet.2024.136483">10.1016/j.matlet.2024.136483</a>.'
  short: N. Mahato, S. Singh, T.V.M. Sreekanth, K. Yoo, J. Kim, Materials Letters
    365 (2024).
corr_author: '1'
date_created: 2024-04-28T22:00:56Z
date_published: 2024-06-15T00:00:00Z
date_updated: 2025-09-04T13:49:05Z
day: '15'
department:
- _id: MaIb
doi: 10.1016/j.matlet.2024.136483
external_id:
  isi:
  - '001300025600001'
intvolume: '       365'
isi: 1
language:
- iso: eng
month: '06'
oa_version: None
publication: Materials Letters
publication_identifier:
  eissn:
  - 1873-4979
  issn:
  - 0167-577X
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'In-situ engineered highly crystalline polythiophene empowered electrochemical
  capacitor-I: Synthesis, characterization, and electrochemical charge storage'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 365
year: '2024'
...