电离子代码:设计用于电化学应用的二三甲基硫胺基离子液体
Pranav J Thacker1, Jiaying Jin1, Jon-Marc McGregor1
1McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States.
The journal of physical chemistry. B
|August 22, 2025
概括
在 bis ((trifluoromethylsulfonyl) imide 离子液体中的阴离子选择影响了电化学应用. 和三硫离子提供了有前途的导电性和电化学窗口,尽管它们的探索较少.
科学领域:
- 电化学
- 材料科学
- 化学工程
背景情况:
- 在电化学应用中,基于二三甲胺 ([Tf2N]-) 的室温离子液体 (RTIL) 是至关重要的.
- 阴离子结构显著影响RTIL特性,如电化学窗口 (ECW) 和导电性.
研究的目的:
- 评估不同核心离子结构对电化学应用的基于Tf2N的RTIL的影响.
- 识别被忽视的具有电化学可取性质的RTIL候选物.
主要方法:
- 对各种RTIL的电化学窗口 (ECW),粘度,分子导电性和解离度进行比较.
- 对亚利法性,芳香性和含硫酸盐的分析.
主要成果:
- 亚利法酸 (金等) 与一些芳香和含硫相比,它们具有广泛的ECW (> 6 V),但具有更高的粘度和更低的导电性.
- 基于的RTIL显示出良好的分子导电性 (例如,甲的0.81 S cm2 mol-1 [Tf2N]).
- 三硫[Tf2N]具有最高的分子导电性,与基于的RTIL相似,具有很高的解离率.
结论:
- 虽然pyrrolidinium和imidazoliumRTILs是常见的,但pyridinium和triethylsulfoniumRTILs是有希望的,但在很大程度上被忽视的,电化学应用的候选物.
- 由于电化学性能差,超基衍生RTIL通常不适合使用.
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