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含有疏水性碳化合物链和疏水性硫酸盐阳离子的表面活性添加剂,用于高度可逆的 Zn 阳极
Jinxian Huang1,2, Zhao Fu1,2, Chuan-Fu Sun2
1College of Chemistry, Fuzhou University, Fuzhou 350108, China.
Molecules (Basel, Switzerland)
|May 27, 2023
概括
perfluoro-1-butanesulfonate (PPFBS) 添加到水性离子电池中可以防止树脂的生长和副作用. 这增强了Zn阳极的稳定性,使长期循环和提高了电池性能.
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) 对大规模储能充满希望.
- 在阳极极限的 Zn 树突增长和副作用 AZIB 的实际应用.
- 开发有效的阳极稳定策略对于AZIB的发展至关重要.
研究的目的:
- 研究 perfluoro-1-butanesulfonate (PPFBS) 作为AZIB中的电解质添加剂的疗效.
- 为了解决 Zn 树突的形成,并减轻 Zn 阳极的副作用.
- 为了提高AZIB的自行车稳定性和整体性能.
主要方法:
- 将含有的表面活性剂PPFBS纳入2M ZnSO4电解质.
- 对Zn/Zn和Zn/Cu细胞进行电化学测试,以评估树抑制和库伦比克效率.
- 用V2O5阴极组装和测试一个完整的AZIB电池,以评估实际性能.
主要成果:
- 添加PPFBS促进了均的Zn2+流,使Zn/Zn细胞能够循环2200小时.
- 一个吸附层的 perfluorobutyl硫酸盐 (C4F9SO3-) 和它的存在Zn2+溶解结构抑制了副作用反应.
- /电池在500个循环中实现了高于99.47%的平均库伦比效率;完整的电池表现出令人印象深刻的循环稳定性.
结论:
- PPFBS有效地抑制了Zn树突的生长和AZIBs中的副作用.
- PPFBS的独特结构提高了阳极/电解质接口的稳定性和离子流量.
- 本研究提出了一种简单,经济和有效的解决方案,用于稳定AZIB中的Zn阳极.
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