离子导电解质基于氨酸离子液体和δ-NaCl
Sumit Kumar1,2, Rajesh Raghupathy1,3, Keti Vezzù4
1Department of Chemistry and Environmental Science, Medgar Evers College of the City University of New York (CUNY), 1638 Bedford Avenue, Brooklyn, NY 11225, USA.
ChemSusChem
|July 31, 2024
概括
含的离子液体作为替代基电解质的替代品显示出希望. 这些新材料具有高离子导电性和高效的沉积,为先进的电池技术铺平了道路.
科学领域:
- 电化学和材料科学 材料科学
- 用于储存能源的离子液体
背景情况:
- 基于的电解质面临着局限性,推动了对替代品的研究.
- 含的离子液体 (IL) 具有作为下一代电解质的潜力.
- 了解ILs中的离子物种化和运输机制对于性能至关重要.
研究的目的:
- 为了研究一系列含的离子液体在电化学应用中的潜在用途.
- 描述这些ILs的离子导电性,物种化和阴离子运输特性.
- 探索ILs和水性酸系统中的离子物种化之间的类比.
主要方法:
- 七种离子液体的合成,其配方是 (EMImCl/(AlCl3)1.5)/(δ-NaCl) x.
- 福利埃变换红外 (FT-IR) 光谱仪用于振动分析和盐-IL相互作用.
- 宽带电光谱用于离子导电量测量 (σdc) 和Vogel-Tamman-Fulcher分析.
- 库伦比效率和 Na+ 阴离子运输数的确定.
主要成果:
- 离子导电性遵循Vogel-Tamman-Fulcher行为,表明微型布罗恩运动辅助.
- 在25°C时,为x=0.74.2的最大 σdc是1.2×10−2 S cm−1 得到的.
- 观察到高库伦比克效率 (高达97%) 和 Na+ 阴离子运输数 (高达0.95).
- 获得了对离子物种化和潜在的格罗托斯型机制的洞察力.
结论:
- 研究的含离子液体显示出出色的离子导电性和可逆的沉积.
- 这些材料是基于的电化学能量储存系统的有希望的候选者.
- 这项研究为这些IL的基本特性提供了宝贵的见解,有助于未来的电解质设计.
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