可扩展的模涂层柔性超级电容器,来自上循环PET面罩
Kiran Kumar Reddy Reddygunta1, Andrew Callander2, Lidija Šiller3
1Smart Materials Research and Device Technology (SMaRDT) Group, Department of Pure and Applied Chemistry, University of Strathclyde Thomas Graham Building Glasgow G1 1XL UK aruna.ivaturi@strath.ac.uk.
这项研究将COVID-19 PET塑料面罩升级为超级电容器的活性碳. 由此产生的材料为储能应用提供高表面积和优异的电化学性能.
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
- 环境科学 环境科学
背景情况:
- 塑料垃圾,特别是COVID-19造成的塑料垃圾,对环境构成重大挑战.
- 越来越需要可持续的方法来管理塑料废物,并开发用于储能的先进材料.
研究的目的:
- 开发一种简单的方法,将聚乙烯二甲 (PET) 塑料废弃物再循环转化为活性炭.
- 评估产生的活性炭对于超级电容应用的适用性.
- 探索灵活电极的大面积涂层技术.
主要方法:
- 采用单步激活技术,将PET面罩转化为活性炭.
- 活性炭的表征包括表面积和孔隙体积测量.
- 电化学性能通过循环电压测量和静电电荷放电来评估.
- 槽模涂层被优化为制造灵活的电极.
主要成果:
- 活性炭具有很高的特定表面积 (1571 m2 g-1) 和孔隙体积 (1.64 cm3 g-1).
- 电极在1 A g-1 时显示出 228.2 F g-1 的特定电容,具有良好的速率能力.
- 优化的灵活超级电容器实现了高能量 (21.8 Wh kg-1) 和功率密度 (20,600 W kg-1).
- 设备在10,000个循环后保持了96.2%的电容.
结论:
- 将PET塑料废弃物再循环转化为活性炭是一种可行的,可持续的储能方法.
- 开发的材料和制造方法显示出大面积可打印超级电容器的前景.
- 这项工作有助于废物管理和高性能储能设备的开发.
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