在Ti3C2Tx中,兴奋剂策略诱导了介层结构和化学状态的协同修饰,以提高容量
Lihong Chen1, Yifan Bi1, Yunqi Jing2
1School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
Molecules (Basel, Switzerland)
|July 14, 2023
概括
兴奋剂和热处理提高了碳化物 (Ti3C2Tx) MXene对超级电容器的性能. 这种修改改进了离子扩散和电荷存储,从而导致更高的电容和出色的循环稳定性.
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:
- 在超级电容器中的Ti3C2Tx MXene的电化学性能提升方面,异构原子兴奋剂至关重要.
- 现有的MXene修改方法需要进一步优化,以提高储能能力.
研究的目的:
- 开发一种简单可控的修改Ti3C2Tx MXene的策略.
- 通过兴奋剂和热处理改善Ti3C2Tx MXene的电化学性能,用于超级电容器应用.
主要方法:
- 使用酸 (NaH2PO2) 作为源的Ti3C2Tx MXene的修改与热处理相结合.
- 修改MXene的结构和化学变化的表征.
- 用于超级电容器性能评估的修改电极的电化学测试.
主要成果:
- 扩大了MXene的层间距,促进了电解质离子扩散.
- 兴奋剂优化了电子结构,增强了导电性和H+扩散.
- 热处理用含有O的组替换了-F结尾,增加了水友性和活性位点,导致10万个循环后的特定电容为510 F g-1和90.2%的电容保留.
结论:
- 层间结构和化学状态的协同修改显著提高了Ti3C2Tx MXene的电荷储存能力.
- 这一协调策略为设计超级电容器的高性能MXene电极提供了一个有希望的方法.
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