为高功率密度定制固态超级电容器的异构结构接口
Zhihao Wang1, Congming Li1,2, Zhangjian Li3
1Micro-/Nano-Technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.
本研究介绍了固态超级电容器 (SSC) 的新型接口工程策略. 改进的设计增强了离子传输和功率密度,实现了与液体电解质设备相匹配的性能,具有卓越的安全性和可扩展性.
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:
- 固态超级电容器 (SSC) 与液体电解质对应器相比,提供了更高的安全性和灵活性.
- 然而,SSC中功率密度较低的原因是凝电解质,电极和电流收集器之间的界面不足.
研究的目的:
- 开发一种策略来定制SSC中的异构结构接口,以提高功率密度和性能.
- 展示先进的SSC可扩展制造的潜力.
主要方法:
- 电流收集器和电极膜的一步微印制,以创建具有双重3D微结构的统一膜.
- 使用活性炭和凝电解质制造SSC.
- 卷对卷加工用于大规模的电极薄膜生产.
主要成果:
- 在30 A g-1时,SSC保留了81%的电容,与液体电解质性能相匹配.
- 袋式SSC实现了12.8千瓦的高功率密度.
- 圆柱形SSC证明了特殊的安全性,承受67GPa冲击压力.
- 一个5米长的电极膜通过卷对卷加工在2分钟内制造出来.
结论:
- 拟议的接口工程策略显著提高了SSC性能,特别是功率密度和安全性.
- 开发的卷对卷工艺使先进的储能解决方案的高度可扩展的制造成为可能.
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