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<p>This study investigated the influence of cellulose acetate (CA) on the electrochemical performance of poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) solid-state electrolytes (SSE). Different loading amounts ranging from 20 to 40 wt.% of CA with PVDF-HFP were evaluated for structural, morphological, and electrochemical impedance spectroscopy (EIS) analysis. The analysis showed that the lowest loading of 20% stands out with remarkable electrochemical attributes, boasting a notable DC ionic conductivity of 11.57 mS/cm. SEM analysis revealed distinct microporous structures, with the highest pore area at 223.5 μm2 and acceptable surface roughness at 151.9&#xa0;μm. FTIR analysis highlighted intensified interactions within the composite, along with unique PVDF-HFP and CA molecule interactions. Loss tangent analysis revealed ion-hopping as the ion migration mechanism. Cyclic voltammetry displayed redox capabilities and an electrochemical stability window (ESW) of approximately 1.0&#xa0;V, positioning PH20CA as a promising SSE with enhanced electrochemical performance. These findings underscore the potential benefits of incorporating CA into PVDF-HFP blends for advanced SSE applications.</p>

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Effects of cellulose acetate on electrochemical performance in poly vinylidene fluoride-co-hexafluoropropylene solid-state electrolytes

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • I. Nasib,
  • M. R. Islam,
  • M. Firouzi,
  • W. Xie,
  • R. A. Davis,
  • S. Toan

摘要

This study investigated the influence of cellulose acetate (CA) on the electrochemical performance of poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) solid-state electrolytes (SSE). Different loading amounts ranging from 20 to 40 wt.% of CA with PVDF-HFP were evaluated for structural, morphological, and electrochemical impedance spectroscopy (EIS) analysis. The analysis showed that the lowest loading of 20% stands out with remarkable electrochemical attributes, boasting a notable DC ionic conductivity of 11.57 mS/cm. SEM analysis revealed distinct microporous structures, with the highest pore area at 223.5 μm2 and acceptable surface roughness at 151.9 μm. FTIR analysis highlighted intensified interactions within the composite, along with unique PVDF-HFP and CA molecule interactions. Loss tangent analysis revealed ion-hopping as the ion migration mechanism. Cyclic voltammetry displayed redox capabilities and an electrochemical stability window (ESW) of approximately 1.0 V, positioning PH20CA as a promising SSE with enhanced electrochemical performance. These findings underscore the potential benefits of incorporating CA into PVDF-HFP blends for advanced SSE applications.