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在水性离子电池中用于沉积调节和侧面反应抑制的双功能动态自适应性相间重构
Huirong Wang1, Anbin Zhou1, Xin Hu1
1Beijing Key Laboratory of Environmental Science and Engineering, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
ACS nano
|June 15, 2023
概括
化石墨烯量子点 (Cl-GQDs) 在水性离子电池中形成了一层保护层,防止树突的生长并改善电池寿命. 这种动态相间增强了储能应用的稳定性和安全性.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 水性离子电池 (AZIB) 面临着树突形成和接口副作用的挑战,限制了它们的寿命和安全性.
- 这些问题阻碍了AZIBs在大规模储能方面的广泛采用.
研究的目的:
- 引入一种双功能动态适应性介面,用于调节沉积和抑制AZIBs中的副作用.
- 使用新型电解质添加剂增强AZIB的稳定性和安全性.
主要方法:
- 加入正电荷的化石墨烯量子点 (Cl-GQDs) 作为电解质添加剂.
- 在阳极表面形成的动态适应界相的表征.
- 改造AZIB的电化学测试,包括循环稳定性和容量保留.
主要成果:
- Cl-GQDs 在阳极上形成静电屏蔽和疏水层,促进均的沉积和减轻腐蚀.
- 由Cl-GQDs形成的动态适应界相是稳定的,可以自我重新配置,在循环过程中不会被消耗.
- 在超过2000个小时的时间里,实现了无树的涂/脱落.
- 经过修改的Zn//LiMn2O4混合细胞在100个循环后,在45.5%的排放深度下,显示出86%的容量保留.
结论:
- 拟议的双功能动态适应性介面相有效地解决了AZIBs中的树生长和副作用.
- Cl-GQD提供了一种简单而有效的策略来提高AZIB的性能和安全性,特别是在有限资源的应用中.
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