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具有增强性能的固态超级电容器使用Al3+-Doped Li+离子矿电解质与碳气凝电极集成

Bhargab Sharma¹, Hardeep¹, Kamaldeep Bisht¹

¹Department of Physics, Birla Institute of Technology and Science, Pilani, Pilani Campus, Vidya Vihar, Pilani, Rajasthan 333031, India.

|September 8, 2025

概括

这项研究引入了一种新的固态陶超级电容器,使用添加的 lanthanum titanate perovskite 和离子液体复合电解质. 新型超级电容器展示了高性能,稳定性和可扩展的储能应用的潜力.

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
固态化学固态化学

背景情况:

固态陶超级电容器 (SSC) 与基于液体电解质的设备相比,提供了更高的安全性和稳定性.
开发具有高离子导电性和结构完整性的复合电解质对于推进SSC技术至关重要.

研究的目的:

开发和表征一种基于添加的兰酸 (Al-LLTO) 和1-乙基-3-甲基利米达四甲酸 (EMIM BF4) 的新型复合电解质.
使用这种复合电解质和冷干燥碳气凝 (FD-CA) 电极制造和评估SSC的性能.

主要方法:

瑞特维尔德对X射线衍射数据的改进,以确认结构稳定性.
X射线光电子光谱 (XPS) 和拉曼光谱检查Al3+的结合.
使用热层和测试电化学性能 (特定电容,循环稳定性,库伦比效率) 制造SSC.

主要成果:

Al3+替代维持了LLTO的四角矿阶段,由XRD证实.
阿尔-LLTO/EMIM BF4复合电解质的室温离子导电率为~10^-3 Ω^-1 cm^-1,比原始的LLTO提高了三级.
制造的SSC实现了约370Fg-1的特定电容,在15,000个周期内保持约87%的电容,在35°C和运行电位≤2V时达到约99%的库伦比效率.

结论:

Al-LLTO/EMIM BF4复合电解质表现出优异的离子导电性和结构稳定性.
开发的SSC表现出高特异容量,卓越的循环稳定性和高库伦比效率.
这项工作突出了Al-LLTO/EMIM BF4复合电解质和FD-CA电极在安全,高效和可扩展的固态超级电容器中的潜力.

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