盐对大麻粉固体生物聚合物电解质特性的影响
Alvaro A Arrieta1, Oriana Palma Calabokis2, Jorge Mario Mendoza3
1Department of Biology and Chemistry, Universidad de Sucre, Sincelejo 700001, Colombia.
Polymers
|October 28, 2023
概括
这项研究表明,盐显著改变麻粉固体生物聚合物电解质 (SBPEs). 三增强了这些生物聚合物电解质中的分子排序,热稳定性和电化学性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 聚合物科学 聚合物科学
背景情况:
- 固体聚合物电解质 (SPEs) 对于先进的电化学设备至关重要.
- 大麻粉为固体生物聚合物电解质 (SBPEs) 提供了可持续和可生物降解的基础.
- 研究各种盐的影响对于优化SBPE特性至关重要.
研究的目的:
- 评估不同盐 (LiCl,Li2SO4,CF3LiSO3) 如何影响草粉基SBPEs的结构,电化学和热特性.
- 确定最佳的盐来提高基于粉的电解质的性能.
- 了解兴奋剂SBPEs中的结构-属性关系.
主要方法:
- 通过热化学方法,使用麻豆粉,可塑剂和盐合成SBPE薄膜.
- 使用富里埃变换红外光谱学 (FTIR) 进行结构分析的表征.
- 热分析包括热重力测量分析 (TGA) 和差分扫描热量计 (DSC).
- 电化学阻抗光谱 (EIS) 用于确定离子导电性.
主要成果:
- 在添加盐后,FTIR分析显示了功能组的轻微变化.
- 通过RCOH/COC指数表示的结晶性,在添加盐,特别是Li2SO4.4时下降.
- 盐添加膜的热稳定性显示出微小的差异,而无盐的膜呈现出不同的降解特征.
- DSC表示相变在65°C左右,葡萄糖环分解在271°C附近.
- 盐显著增强了离子导电性,达到Li2SO4的最大9.54 × 10^-3 S cm^-1,而无盐SBPEs的8.42 × 10^-5 S cm^-1.
- 有三酸的SBPEs表现出优越的分子排序,热稳定性和较低的氧化还原潜力.
结论:
- 盐的选择极大地影响了基于麻粉的SBPEs的结构,热和电化学特性.
- 三酸因其改善的分子排序和电化学特性而成为增强SBPEs性能的有前途的剂.
- 包含特定盐的优化SBPEs有可能用于储能设备中的应用.
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