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<p>In an era of modern bendable and disposable energy storage devices, pouch-based aqueous zinc-ion batteries (AZIBs) are highly suitable due to their facile assembly and environmentally safe characteristics. In the presented work, a successful synthesis of an LC/MnO<sub>2</sub>/PPy based tertiary composite was carried out to address the limitation of the inherent rigid structure by growth on lignocelluloses fibers (LC) and encapsulation of polypyrrole (PPy) to develop a freestanding and synthetic binder free cathodic electrode of the cell. Furthermore, Zinc and LC fiber-based electrodes have also been fabricated for the development of the anodic electrode of pouch-based AZIBS. Morphology and elemental description of prepared electrodes were studied using scanning electron microscopy and energy-dispersive X-ray spectroscopy. Fourier transform infrared spectroscopy and Raman spectroscopy were employed for the analysis of functional groups and chemical structures of the electrode structures. MnO<sub>2</sub> powder and LC/MnO<sub>2</sub> exhibited good electrochemical behavior and depicted a specific discharge capacity of 128.3 mAh/g at 1.0&#xa0;A/g current density. The assembled pouch cell also depicted exceptional electrochemical properties and demonstrated a power density of 1356.66&#xa0;W/kg at 15.09 Wh/kg as well as excellent capacity retention of 91.4% at 0.3&#xa0;A/g after 1000 cycles. The incorporation of the PPy enhanced the electrochemical behaviour of the LC/MnO<sub>2</sub>/PPy composite, as revealed by electrochemical characterizations. The presented work indicates a novel approach to fabricate the Mn-based materials and conducting polymer composites as a cathode for zinc-ion batteries.</p>

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Freestanding and binder free polypyrrole coated MnO2 based bendable electrodes for development of aqueous zinc ion pouch battery cell

  • 期刊论文

  • 发表日期：

    2026年2月28日

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  • Sameen Ilyas,
  • Ishrat Sultana,
  • Fatima Kainat,
  • Aneeqa Masood,
  • Muhammad Faisal Iqbal,
  • Shehar Bano,
  • Waris Ali,
  • Aftab Javid,
  • Ishmal Irfan,
  • Aamir Razaq

摘要

In an era of modern bendable and disposable energy storage devices, pouch-based aqueous zinc-ion batteries (AZIBs) are highly suitable due to their facile assembly and environmentally safe characteristics. In the presented work, a successful synthesis of an LC/MnO2/PPy based tertiary composite was carried out to address the limitation of the inherent rigid structure by growth on lignocelluloses fibers (LC) and encapsulation of polypyrrole (PPy) to develop a freestanding and synthetic binder free cathodic electrode of the cell. Furthermore, Zinc and LC fiber-based electrodes have also been fabricated for the development of the anodic electrode of pouch-based AZIBS. Morphology and elemental description of prepared electrodes were studied using scanning electron microscopy and energy-dispersive X-ray spectroscopy. Fourier transform infrared spectroscopy and Raman spectroscopy were employed for the analysis of functional groups and chemical structures of the electrode structures. MnO2 powder and LC/MnO2 exhibited good electrochemical behavior and depicted a specific discharge capacity of 128.3 mAh/g at 1.0 A/g current density. The assembled pouch cell also depicted exceptional electrochemical properties and demonstrated a power density of 1356.66 W/kg at 15.09 Wh/kg as well as excellent capacity retention of 91.4% at 0.3 A/g after 1000 cycles. The incorporation of the PPy enhanced the electrochemical behaviour of the LC/MnO2/PPy composite, as revealed by electrochemical characterizations. The presented work indicates a novel approach to fabricate the Mn-based materials and conducting polymer composites as a cathode for zinc-ion batteries.