Hadi Jihad M, Aziz Bakhtyar K, Aziz Shujahadeen B
Chemistry Department, College of Science, Charmo University, Chamchamal, Sulaimani, 46023, Kurdistan Regional Government, Iraq.
Research and Development Center, University of Sulaimani, Qlyasan Street, Sulaimani, 46001, Iraq.
Sci Rep. 2025 Apr 24;15(1):14379. doi: 10.1038/s41598-025-99489-5.
Biodegradable solid polymer electrolytes (BSPEs) have gained significant attention due to their exceptional processability, safety, and flexibility. This work presents the development of sodium ion (Na +) conducting ternary blended (BSPEs) using a standard solution casting technique. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) validated the complete salt dissociation and demonstrated the formation of polymer-salt complexes. The deconvoluted XRD spectra revealed the degree of crystallinity ([Formula: see text]) of electrolytes where the sample incorporated 40 wt% of NaSCN salt content (STC4) was found to be the lowest [Formula: see text] value. The deconvoluted FTIR spectra were used to estimate ionic transport parameters of diffusion coefficient ([Formula: see text]), ion mobility (μ), and carrier density ([Formula: see text]). Ionic conductivity and electrical properties of electrolyte samples were investigated by electrochemical impedance spectroscopy (EIS). The EIS results were fitted with electrical equivalent circuits to understand the electrical behavior of the films. The highest DC conductivity value ([Formula: see text]) of (2.74 × 10 S/cm) was achieved for the STC4 sample, attributed to its highest amorphous region and carrier density. The dielectric studies proved beneficial in distinguishing the areas attributed to molecular polarizations and electrodes. The reduction of relaxation time is indicated by shifting loss tangent peaks (tan δ) toward high frequency ranges. According to dielectric relaxation studies, the appearance of peaks confirmed non-Debye type behavior. Distinct areas attributed to the effects of electrode polarization and ([Formula: see text]) are seen in AC conductivity ([Formula: see text]) spectra.
可生物降解的固体聚合物电解质（BSPEs）因其出色的加工性能、安全性和柔韧性而备受关注。本工作采用标准溶液浇铸技术制备了钠离子（Na⁺）传导三元共混（BSPEs）。傅里叶变换红外光谱（FTIR）和X射线衍射（XRD）验证了盐的完全解离，并证明了聚合物 - 盐配合物的形成。解卷积后的XRD光谱揭示了电解质的结晶度（[公式：见原文]），其中发现掺入40 wt% NaSCN盐含量（STC4）的样品的[公式：见原文]值最低。解卷积后的FTIR光谱用于估计扩散系数（[公式：见原文]）、离子迁移率（μ）和载流子密度（[公式：见原文]）等离子传输参数。通过电化学阻抗谱（EIS）研究了电解质样品的离子电导率和电学性能。EIS结果与等效电路拟合以了解薄膜的电学行为。STC4样品实现了最高的直流电导率值（[公式：见原文]）（2.74×10 S/cm），这归因于其最高的非晶区和载流子密度。介电研究证明有助于区分分子极化和电极所贡献的区域。损耗角正切峰（tan δ）向高频范围移动表明弛豫时间缩短。根据介电弛豫研究，峰的出现证实了非德拜型行为。在交流电导率（[公式：见原文]）光谱中可以看到归因于电极极化和（[公式：见原文]）影响的不同区域。
