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Semi-Polycrystalline–Polyaniline Empowered Electrochemical Capacitor

Author

Listed:
  • Neelima Mahato

    (School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Gyeongsangbuk-do, Korea)

  • Debananda Mohapatra

    (School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Gyeongsangbuk-do, Korea)

  • Moo Hwan Cho

    (School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Gyeongsangbuk-do, Korea)

  • Kwang Soon Ahn

    (School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Gyeongsangbuk-do, Korea)

Abstract

We report on the formation of semi-polycrystalline polyaniline, a novel electroactive polymeric material synthesized by a modified surfactant-free chemical route and its enhanced electrochemical capacitive behavior. The material exhibits uniformly arranged spindle-shaped morphology in scanning electron microscopy and well-defined crystallographic lattices in the high-resolution transmission electron microscopy images. The X-ray diffraction spectrum reveals sharp peaks characteristic of a crystalline material. The characteristic chemical properties of polyaniline are recorded using Fourier transform infrared technology and laser Raman spectroscopies. The cyclic voltammetry curves exhibit features of surface-redox pseudocapacitance. The specific capacitance calculated for the material is 551 F g −1 at a scan rate of 10 mV s −1 . The cycle stability and the coulombic efficiency recorded at a current density of 12 A g −1 exhibited good stability (90.3% and 99.5%, respectively) over 3000 cycles.

Suggested Citation

  • Neelima Mahato & Debananda Mohapatra & Moo Hwan Cho & Kwang Soon Ahn, 2022. "Semi-Polycrystalline–Polyaniline Empowered Electrochemical Capacitor," Energies, MDPI, vol. 15(6), pages 1-36, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:6:p:2001-:d:767544
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    References listed on IDEAS

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    1. Tao Zhang & Haoyuan Qi & Zhongquan Liao & Yehu David Horev & Luis Antonio Panes-Ruiz & Petko St. Petkov & Zhe Zhang & Rishi Shivhare & Panpan Zhang & Kejun Liu & Viktor Bezugly & Shaohua Liu & Zhikun , 2019. "Engineering crystalline quasi-two-dimensional polyaniline thin film with enhanced electrical and chemiresistive sensing performances," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    2. Tianyu Liu & Zhengping Zhou & Yichen Guo & Dong Guo & Guoliang Liu, 2019. "Block copolymer derived uniform mesopores enable ultrafast electron and ion transport at high mass loadings," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
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