高能量密度固态对称超级电容器使用离子液分散的Li+离子-矿
Bhargab Sharma1, Shrishti Sharma1, Gurpreet Kaur2
1Department of Physics, BITS Pilani-Pilani Campus RJ-333031 India adalvi@pilani.bits-pilani.ac.in.
RSC advances
|January 28, 2025
概括
本研究介绍了使用新型复合电解质的固态陶超级电容器. 增强的电解质显著提高了离子导电性,使得稳定,高性能储能,用于诸如电源LED等应用.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 固态陶超级电容器 (SSC) 为基于液体电解质的设备提供了更安全的替代方案.
- lanthanum titanium oxide (LLTO) 是一个有前途的固体电解质,但其离子导电性较低.
- 离子液体 (ILs) 可以增强离子导电性并改善电极接口特性.
研究的目的:
- 开发一种用于固态陶超级电容的新型复合电解质.
- 为了提高基于LLTO的电解质的离子导电性和电化学性能.
- 为实际的储能应用制造和表征高性能SSC.
主要方法:
- 使用矿类型的LLTO (Li0.34La0.51TiO3) 和离子液体 (EMIM BF4) 合成了一种复合电解质.
- 各种离子液体被纳入LLTO以优化离子导电性和电极兼容性.
- 使用优化的电解质和活性碳涂层铜电极在层层细胞中制造SSC.
主要成果:
- 最佳的复合电解质 (LLTO中≤6 wt% EMIM BF) 在室温下实现了高离子导电性 (≤10-3 Ω-1 cm-1) .
- 制造的SSC在2V下稳定循环超过10,000个周期,并具有高的库伦比效率 (∼99%).
- 一个典型的电池在0.57Ag-1和2V下达到510Fg-1的特定电容,能够为LED供电.
结论:
- 新型LLTO-EMIM BF4复合电解质显著提高了SSC的离子导电性.
- 开发的SSC表现出卓越的稳定性,高容量,并有可能用于实际的低功耗应用.
- 这项工作为创建高效和安全的固态储能设备提供了可行的途径.
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