时间解析的电化学动力学和伪电容性电荷存储在Fe-MOF@CoSn基非对称混合超级电容器中
Karthick Raja K1, Mani Govindasamy2,3, Vivek Kumar1
1Applied Nanomaterials and Devices Laboratory, Department of Physics, Indian Institute of Information Technology Design & Manufacturing Kancheepuram, Chennai 600127, India.
金属有机框架 (MOFs) 显示出储能方面的前景. 在CoSn (OH) (MOF@CTH2) 上的MIL-100 (Fe) 实现了对不对称的混合超级电容器的高容量.
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:
- 金属有机框架 (MOF) 是有吸引力的电极材料,因为它们的可调节结构和大表面积.
- MOF提供可调节的物理化学特性,对于先进的储能应用至关重要.
研究的目的:
- 在CoSn(OH) 6 (MOF@CTH2) 上合成MIL-100(Fe) 并评估其电化学性能.
- 阐明MOF@CTH2的电荷储存机制和电化学动力学,用于不对称的混合超级电容器 (AHS).
主要方法:
- MOF@CTH2的合成和表征.
- 使用循环电压测量和静电电荷放电的电化学性能评估.
- 恩分析和放松时间分布分析,以阐明机制.
主要成果:
- MOF@CTH2显示显著增加了不同的容量贡献.
- 分析揭示了容量和非容量法拉第克电荷转移过程.
- 该MOF@CTH2电极实现了1124.6F/g的特定电容.
- 该AHS装置的能量密度为36.21Wh/kg,功率密度为749.98W/kg.
结论:
- 在AHS应用中,MOF@CTH2表现出卓越的电化学性能.
- 这项研究增强了对基于MOF的系统中时间解析的电化学过程的理解.
- 这些发现突显了MOF基材料在高性能储能设备中的潜力.
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