MXene-Derived TiO2/Starbon纳米复合材料作为硬币细胞对称超级电容器的卓越电极材料
Sanjay D Sutar1, Indrajit Patil2, Haridas Parse3
1Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India.
Small (Weinheim an der Bergstrasse, Germany)
|July 4, 2024
概括
一种新型的碳化物MXene (Ti3C2Tx) 衍生的二氧化 (TiO2) /星纳米复合物被合成. 这种材料表现出增强的表面积,孔积和优越的电化学性能,用于储能应用.
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
- 纳米技术 纳米技术
背景情况:
- 像Ti3C2Tx这样的MXenes是用于储能的有希望的二维材料.
- 开发先进的纳米复合材料可以增强储能材料的电化学特性.
研究的目的:
- 为了合成一种新型的MXene (Ti3C2Tx) 衍生TiO2/starbon纳米复合物 (M-TiO2/Starbon-800 °C).
- 研究合成纳米复合材料的结构和电化学特性.
- 评估其对储能应用的潜力.
主要方法:
- 用于纳米复合材料合成的简单化方法.
- 高温处理将Ti3C2Tx转化为棒状TiO2,并将星转化为无形碳.
- 纳米复合材料的表面积,孔积和电化学性能的表征.
主要成果:
- 与单个组件相比,M-TiO2 / Starbon-800 °C纳米复合材料的表面积和孔积显著增加.
- 在三电极设置中,在1Ag-1下达到1352Fg-1的特定电容.
- 经过5万个循环后,表现出优异的循环稳定性,容量保留率超过99%.
- 在一个对称的硬币电池中,实现了 115 Fg-1 的特定电容, 51 Whkg-1 的能量密度和 7912 Wkg-1.1 的功率密度.
结论:
- 合成的M-TiO2 / Starbon-800 °C纳米复合材料由于其多孔结构和高表面积,具有卓越的电化学性能.
- M-TiO2纳米棒和星之间的相互作用促进了有效的离子传输,增强了电荷储存.
- 这种纳米复合材料对先进的储能设备具有显著的前景.
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