研究目的
To develop and characterize novel solid polymer electrolyte films based on PMMA and lithium acetate for potential application in solid-state batteries, focusing on the effect of salt concentration on optical and conductivity properties.
研究成果
The SPE films exhibit amorphous nature, reduced band gap, and high ionic conductivity, making them suitable for solid-state battery applications. The highest conductivity was achieved with 60:40 wt% ratio, outperforming previous reports. Future work should focus on enhancing conductivity further and testing in actual battery systems.
研究不足
The study is limited to specific weight ratios of PMMA:CH3COOLi and room temperature measurements; scalability, long-term stability, and performance under varying environmental conditions were not addressed. Optimization for industrial applications may require further investigation.
1：Experimental Design and Method Selection:
Solution casting technique was used to prepare SPE films with varying weight ratios of PMMA:CH3COOLi (60:40, 70:30, 80:20 wt%). Characterization methods included XRD for phase analysis, FTIR for structural changes, UV–visible spectroscopy for optical properties, and AC impedance for conductivity studies.
2：Sample Selection and Data Sources:
Samples were prepared using PMMA and CH3COOLi dissolved in DMF solvent. No external datasets were used; all data were generated from the prepared films.
3：List of Experimental Equipment and Materials:
XPERT-PRO diffractometer for XRD, Perkin-Elmer Alpha-E spectrophotometer for FTIR, JASCO V-670 spectrophotometer for UV–visible, HIOKI 3532-50 LCR HITESTER for AC conductivity and dielectric measurements. Materials included PMMA (Sigma-Aldrich, MW 12×10^5 g/mol), CH3COOLi (Sigma-Aldrich), and DMF solvent.
4：Experimental Procedures and Operational Workflow:
PMMA and CH3COOLi were dried, mixed in DMF, stirred for 48 hours, cast into dishes, and dried at room temperature to form films. Films were characterized using the specified instruments under standard conditions (e.g., XRD with current 30 mA, angle range 10°–90°).
5：Data Analysis Methods:
Data were analyzed using equations for band gap (Tauc's plot), conductivity (σ = d/(Rb * A)), and dielectric properties. Statistical techniques were not explicitly mentioned; software tools were not specified.
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