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<p>Extensive research is being carried out on solid-state electrolytes that are produced from renewable sources. This research is driven by the growing need for energy storage devices that are environmentally friendly. The present study examines the feasibility of using a solid polymer electrolyte consisting of guar gum and potassium hydroxide (KOH) in zinc-air batteries. The synthesised solid electrolyte composite underwent thorough analysis using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), impedance spectroscopy, transference number measurements, and linear sweep voltammetry (LSV) to understand its structural, electrochemical, and transport properties. A maximum ionic conductivity of 1.34 × 10<sup>–4</sup> Scm<sup>−1</sup> at ambient temperature was achieved. A zinc-air battery was constructed using the highest conducting membrane, and its performance was studied. A maximum peak power density of 15.15 mW cm<sup>−2</sup> was obtained.</p>

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Development of guar gum-based solid electrolyte for zinc-air battery applications

  • 期刊论文

  • 发表日期：

    2025年9月19日

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  • K. Venkatesh,
  • I. Jenova,
  • Karthikeyan Shunmugavel,
  • S. Madeswaran,
  • G. Aristatil,
  • R. M. Gnanamuthu

摘要

Extensive research is being carried out on solid-state electrolytes that are produced from renewable sources. This research is driven by the growing need for energy storage devices that are environmentally friendly. The present study examines the feasibility of using a solid polymer electrolyte consisting of guar gum and potassium hydroxide (KOH) in zinc-air batteries. The synthesised solid electrolyte composite underwent thorough analysis using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), impedance spectroscopy, transference number measurements, and linear sweep voltammetry (LSV) to understand its structural, electrochemical, and transport properties. A maximum ionic conductivity of 1.34 × 10–4 Scm−1 at ambient temperature was achieved. A zinc-air battery was constructed using the highest conducting membrane, and its performance was studied. A maximum peak power density of 15.15 mW cm−2 was obtained.