稳定的阳极接口和适应环境的水凝电解质,用于离子混合超级电容器的稳定运行
Zhixin Zhang1, Yang Gao1, Yiyan Gao1
1Polymeric and Soft Materials Laboratory, School of Chemical Engineering, Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, PR China.
Journal of colloid and interface science
|September 2, 2023
概括
灵活的离子混合超级电容器克服了树的生长和低温问题. 一种新的保护层和防水凝能够在广泛的温度范围内稳定地储存能量.
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:
- 基于水凝的离子混合超级电容器 (ZIHS) 提供高能量密度,灵活性和安全性.
- 挑战包括阳极树突的生长和低温性能差,限制了实际使用.
研究的目的:
- 开发一个灵活和环境适应性的ZIHS,增强稳定性和性能.
- 为了解决ZIHS中状岩的形成和低温降解的问题.
主要方法:
- 通过化学沉积在Zn阳极上构建ZnF2固体电解质接口保护层.
- 制造一种自粘性,抗的紫烯酸凝电解质.
主要成果:
- 该ZnF2层有效地抑制了树的生长和寄生虫的反应.
- 水凝电解质表现出高离子导电性 (97.1 mS cm-1),抗干燥性能和强大的粘合力.
- 该ZIHS表现出卓越的机械适应性,能量密度 (103.9Wh kg-1),以及广泛的操作温度范围 (-40至40°C).
- 在 -25°C下12000个循环后实现了90.3%的容量保留,并在开放环境中保持稳定.
结论:
- 集成的电极和电解质设计显著提高ZIHS的耐用性和环境适应性.
- 这项工作为开发强大的,灵活的,具有广泛温度范围的基于的储能系统提供了途径.
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