Scholarlink

<p>This study investigates the enhancement of proton conductivity in biopolymer blend electrolytes (BBEs) made from alginate and polyvinyl alcohol (PVA) doped with varying amounts of ammonium iodide (NH<sub>4</sub>I) using the solution casting technique. The influence of NH<sub>4</sub>I on the physicochemical and ionic transport properties of the BBEs was systematically studied. Fourier transform infrared (FTIR) spectroscopy confirmed the complexation between NH<sub>4</sub>I and the polymer blend. Differential scanning calorimetry (DSC) demonstrated that NH<sub>4</sub>I incorporation reduced the glass transition temperature (<i>T</i><sub><i>g</i></sub>) and enhanced thermal stability. Electrical impedance spectroscopy (EIS) revealed the highest ionic conductivity of 1.01 × 10⁻5 S cm⁻1 at 25 wt.% NH<sub>4</sub>I. The temperature dependence study showed Arrhenius behavior, with the highest conducting sample exhibiting a low activation energy (<i>E</i><sub><i>a</i></sub>) of 0.18 eV. Dielectric analysis indicated that the diffusion coefficient (<i>D</i>), ionic mobility (<i>μ</i>), and charge carrier density (<i>n</i>) significantly influenced the ionic conductivity. Using Bruce and Vincent’s technique, transference number measurements indicated that anions primarily facilitated charge transport. These findings suggest that NH<sub>4</sub>I-doped alginate-PVA BBEs have proven potential as effective materials for electrolyte applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhanced ionic conduction properties of alginate-PVA biopolymer blend electrolytes doped with NH4I

  • 期刊论文

  • 发表日期：

    2025年4月7日

查看全文
  • M. A. H. Nizam,
  • N. F. Mazuki,
  • N. M. Ghazali,
  • A. S. Samsudin

摘要

This study investigates the enhancement of proton conductivity in biopolymer blend electrolytes (BBEs) made from alginate and polyvinyl alcohol (PVA) doped with varying amounts of ammonium iodide (NH4I) using the solution casting technique. The influence of NH4I on the physicochemical and ionic transport properties of the BBEs was systematically studied. Fourier transform infrared (FTIR) spectroscopy confirmed the complexation between NH4I and the polymer blend. Differential scanning calorimetry (DSC) demonstrated that NH4I incorporation reduced the glass transition temperature (Tg) and enhanced thermal stability. Electrical impedance spectroscopy (EIS) revealed the highest ionic conductivity of 1.01 × 10⁻5 S cm⁻1 at 25 wt.% NH4I. The temperature dependence study showed Arrhenius behavior, with the highest conducting sample exhibiting a low activation energy (Ea) of 0.18 eV. Dielectric analysis indicated that the diffusion coefficient (D), ionic mobility (μ), and charge carrier density (n) significantly influenced the ionic conductivity. Using Bruce and Vincent’s technique, transference number measurements indicated that anions primarily facilitated charge transport. These findings suggest that NH4I-doped alginate-PVA BBEs have proven potential as effective materials for electrolyte applications.