一个灵活的超级电容器基于碳化物MXene和二硫酸盐复合电极
Guixia Wang1, Zhuo Yang1, Xinyue Nie1
1Henan Key Laboratory of Function-Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, China.
Micromachines
|August 26, 2023
概括
用二硫酸 (AQS) 修改的碳化物 (Nb2C) MXene复合物显示出更好的超容性能. 这种表面修改增强了离子的可访问性,从而导致更高的电容和灵活设备的稳定能量存储.
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:
- 基于MXene的复合材料对于电能存储设备至关重要.
- 碳化 (Nb2C) MXene具有很高的表面积和导电性,但由于堆叠而受到影响,限制了性能.
- 开发克服Nb2C堆叠的策略是先进的储能应用的关键.
研究的目的:
- 通过表面修饰来增强Nb2C MXene的超容性能.
- 为了改善Nb2C电极内的离子和电解质可访问性.
- 使用修改后的Nb2C.创建高性能,灵活的超级电容器.
主要方法:
- 通过使用 antraquinone-2-sulfonate (AQS) 合成了一种Nb2C-AQS复合物.
- 使用Nb2C-AQS复合材料作为电极材料制造的超级电容器.
- 评估电化学性能,包括电容,灵活性和循环稳定性.
主要成果:
- 该Nb2C-AQS复合物形成了一个三维多孔多层结构.
- 与纯Nb2C (16.8 mF cm-2) 相比,Nb2C-AQS超级电容在20 mV s-1.0 时实现了显著更高的电容 (36.3 mF cm-2).
- 超级电容器表现出极好的灵活性和高循环稳定性,在600个循环后保持99.5%的电容.
结论:
- 使用AQS对Nb2C MXene的表面修改有效地提高了超容量性能.
- Nb2C-AQS复合材料是高性能,灵活的储能器件的一个有前途的材料.
- 这项工作为开发基于MXene的先进超级电容器提供了一种可行的方法.
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