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<p>The current study reported an energy storage EDLC device designed from sustainable and green biomaterials with enhanced electrochemical properties. The materials used in this project are environmentally friendly, biodegradable, and compatible, consisting of chitosan and potato starch inserted with potassium iodide (KI). The glycerol green plasticizer (GGP) was used to boost the DC conductivity. The FTIR results establish that GGP is efficient in weakening the electrostatic columbic interaction between cation-anion and scarifying the hydrogen bonding between polymer chains. The enhancement of DC conductivity (1.92 × 10<sup>–4</sup> S cm<sup>−1</sup>) with plasticizer inclusion at ambient temperature is interpreted based on an empirical reformulated Arrhenius equation. The ε' value (≈4,74,000) is about twice of ε″ (≈2,38,000) value which is really vital from the viewpoint of storage and dissipation of energy. The electrochemical potential window of the biopolymer electrolyte (BPE) is 2.1 V, with a high ion transference number of 0.956. Both CV and GCD tests verified the capacitive properties of the fabricated cell. The EDLC exhibited a reasonable specific capacitance value of 42.38 F/g from the CV study, with stable performance in terms of energy and power densities, averaging 8.33 Wh/kg and 1023.5 W/kg, respectively, throughout 2,000 cycles.</p> Graphical abstract <p></p>

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Plasticized ecofriendly chitosan-potato starch biopolymer electrolyte with enhanced dielectric constant for EDLC application

  • 期刊论文

  • 发表日期：

    2025年1月13日

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  • Shujahadeen B. Aziz,
  • Peshawa O. Hama,
  • Rebar T. Abdulwahid,
  • Dara M. Aziz,
  • Pshko A. Mohammed,
  • Muhamad H. Hamsan,
  • Ranjdar M. Abdullah,
  • Mohd F. Z. Kadir

摘要

The current study reported an energy storage EDLC device designed from sustainable and green biomaterials with enhanced electrochemical properties. The materials used in this project are environmentally friendly, biodegradable, and compatible, consisting of chitosan and potato starch inserted with potassium iodide (KI). The glycerol green plasticizer (GGP) was used to boost the DC conductivity. The FTIR results establish that GGP is efficient in weakening the electrostatic columbic interaction between cation-anion and scarifying the hydrogen bonding between polymer chains. The enhancement of DC conductivity (1.92 × 10–4 S cm−1) with plasticizer inclusion at ambient temperature is interpreted based on an empirical reformulated Arrhenius equation. The ε' value (≈4,74,000) is about twice of ε″ (≈2,38,000) value which is really vital from the viewpoint of storage and dissipation of energy. The electrochemical potential window of the biopolymer electrolyte (BPE) is 2.1 V, with a high ion transference number of 0.956. Both CV and GCD tests verified the capacitive properties of the fabricated cell. The EDLC exhibited a reasonable specific capacitance value of 42.38 F/g from the CV study, with stable performance in terms of energy and power densities, averaging 8.33 Wh/kg and 1023.5 W/kg, respectively, throughout 2,000 cycles.

Graphical abstract