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通过调节接口化学,一种由卡拉基诱导的高度稳定的Zn阳极
Yan Xu1, Zhaohe Guo1, Xuena Xu2
1School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou 221018, China. xuyan8787@163.com.
Dalton transactions (Cambridge, England : 2003)
|November 22, 2024
概括
作为绿色电解质添加剂的卡拉基 (Carr) 通过防止树突来增强离子电池的安全性. 这种生物添加剂提高了Zn阳极的稳定性和电池性能,用于实际应用.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 离子电池 (ZIB) 提供安全性,低毒性和成本效益,但面临着Zn树突和副作用的挑战.
- 这些问题阻碍了ZIB的商业可行性,需要先进的电解质解决方案.
研究的目的:
- 研究生物添加剂卡拉基南 (Carr) 作为改善ZIB性能的解决方案.
- 为了解决Zn树突的形成和ZIB中的副作用,使用Carr.
主要方法:
- 卡拉基南被用作ZIB中的电解质添加剂.
- 分析了卡尔与Zn2+离子的相互作用及其对电极-电解质接口的影响.
- 在 Zn 阳极上形成的固体电解质介相 (SEI) 的组成被描述.
主要成果:
- 卡尔调节了Zn2+溶解和离子分布,促进了均的Zn沉积.
- 在 Zn 阳极上形成了一个由 ZnO, ZnS 和 R-SO2 物种组成的稳定的 SEI 层.
- 在800个小时内,Zn基单元表现出稳定的循环,而Zn基单元在1800个循环中实现了99.2%的库伦比效率.
- 一个完整的Zn下载的VO2细胞表现出通过卡尔修饰的电解质的增强性能.
结论:
- 碳素是一种有效的,环保的添加剂,用于稳定Zn阳极在ZIBs.
- 卡尔的使用显著改善了ZIB的周期寿命,coulombic效率和整体性能.
- 基于Carr的电解质为实际实施更安全,更有效的ZIB铺平了道路.
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