稳定的有机聚合物阳极用于基于的双离子电池的高速充电和快速充电
Xuan Liu1,2, Hongzheng Wu1,2, Zipei Xuan3
1School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China.
ChemSusChem
|December 21, 2023
概括
这项研究引入了碳纳米管修改的聚胺阳极,用于基双离子电池 (SDIB),增强稳定性和性能. 新的阳极为储能应用提供了出色的速率能力和循环稳定性.
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:
- 由于资源和设计灵活性,有机电极对储存具有前景.
- 然而,由于溶解和不稳定性导致的周期性稳定性差,限制了它们的应用.
- 开发稳定的有机阳极材料对于先进的基于的双离子电池 (SDIB) 是至关重要的.
研究的目的:
- 为SDIBs开发一种稳定,高性能的阳极材料.
- 研究聚胺和碳纳米管 (CNT) 在离子储存中的协同效应.
- 为了评估在离子液体电解质中修改的聚胺阳极的电化学性能.
主要方法:
- 合成碳纳米管 (CNT) 改性聚胺作为阳极材料.
- 基于的双离子电池 (SDIB) 的制造和电化学测试.
- 对周期稳定性,速率能力,特异性放电能力和自放电率的分析.
主要成果:
- 经过CNT修改的聚胺阳极表现出增强的结构完整性和电化学性能.
- 该电池在0.2°C时实现了119.3mAhg-1的特定放电容量.
- 观察到卓越的循环稳定性,在1000次10°C循环后保持82.3mAhg-1的电容,具有低自放电和稳定的快速充电.
结论:
- 经CNT修饰的聚胺是SDIBs的高度稳定和有效的阳极.
- CNTs和聚胺之间的协同效应显著改善了离子导电性和速率性能.
- 这种材料显示出大规模电化学储能和未来SDIB开发的巨大潜力.
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