非替代性伊米达基电解质作为超级电容器的聚氨基电极材料传统酸性电解质的潜在替代品
Fatima Al-Zohbi1, Fouad Ghamouss2, Johan Jacquemin2
1Department of Chemistry, Faculty of science III, Lebanese University, Tripoli 1300, Lebanon.
Molecules (Basel, Switzerland)
|June 19, 2024
概括
非替代的硫酸 ([Imi][HSO4]) 和硫酸 ([Pyrr][HSO4]) 水性电解质提高了 PANI 电极的性能. 这些离子液体为储能设备的传统硫酸电解质提供了一个有希望的替代品.
科学领域:
- 电化学和材料科学 材料科学
- 离子液体用于储能储能
背景情况:
- 在离子液体电解质中常见的是异位化伊米达酸盐,但在绝缘上受到阻碍.
- 作为电解质,未被替代的伊米达酸,无固态无拥挤,尚未被探索.
- 聚氨酸 (PANI) 是储能器件中电极应用的关键材料.
研究的目的:
- 为了研究非替代的伊米达硫酸 ([Imi][HSO4]) 作为聚亚尼林 (PANI) 基电极的水性电解质.
- 为了比较[Imi][HSO4]和基于pyrrolidinium的电解质 ([Pyrr][HSO4],[Pyrr][PTS]) 与PANI电极的常规水性H2SO4的性能.
- 评估PANI在这些新型电解质系统中的电化学性能和电容性行为.
主要方法:
- 准备和表征二元混合物的离子液体 (基于imidazolium和pyrrolidinium) 和水.
- 在水性离子液体电解质和水性H2SO4.4中对PANI电极进行电化学性能测试.
- 分析使用沃尔登图来评估离子导电性和电化学阻抗光谱来确定电容性行为.
主要成果:
- 在 [Imi][HSO4]/水 (48/52重%,195.1 mS/cm) 和 [Pyrr][HSO4]/水 (41/59重%,186.6 mS/cm) 的特定重量比率下,获得了最佳的离子导电性.
- [Imi][HSO4]和[Pyrr][HSO4]水性电解质显示了与[Pyrr][PTS]和传统的H2SO4.4相比,PANI电极的性能优越.
- 用[Imi][HSO4]水性电解质取代H2SO4,使PANI/PIL的特定电容从249.8升至268.5F/g在15mV/s,具有准理想的电容性行为.
结论:
- 在水性混合物中,非替代的基于伊米达的离子液体,特别是[Imi][HSO4],是PANI电极的有效电解质.
- 这些离子液体提高了电化学性能,为传统的水性H2SO4电解质提供了可行且潜在的优质替代品.
- 这项研究强调了无菌不拥挤的伊米达离子在先进的储能应用中的潜力.
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