A piezoelectric nanogenerator promotes highly stretchable and self-chargeable supercapacitors,Materials Horizons

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A piezoelectric nanogenerator promotes highly stretchable and self-chargeable supercapacitors
Materials Horizons ( IF 12.2 ) Pub Date : 2020-06-09 , DOI: 10.1039/d0mh00610f
Dan Zhou _{1,

2,

3,

4,

5} , Ning Wang _{1,

2,

3,

4,

5} , Taotao Yang _{3,

4,

5,

6} , Long Wang _{5,

7,

8,

9} , Xia Cao _{1,

2,

3,

4,

5} , Zhong Lin Wang _{4,

10,

11,

12,

13}

Affiliation

The rapid development of soft wearable electronics raises an ever-growing demand for power sources with both built-in stretchability and sustainability. Herein, highly stretchable and self-chargeable supercapacitors were fabricated by using graphene-coated elastic styrene–ethylene–butylene–styrene electrodes and KNN/PVA/H₃PO₄-based piezoelectric electrolytes. The as-designed supercapacitor shows not only a high biaxial stretchability up to 300%, but also an intriguing self-charging performance by harnessing and transforming ambient mechanical energy into electricity in a persistent pattern. This highly stretchable device can be finally charged to about 1.0 V by pure palm patting for 300 s (2 Hz) or 0.8 V by repeated stretching for 40 s (1 Hz). Such a stretchable design enables the integration of such supercapacitors with soft/stretchable electronics as an energy collectable, self-rechargeable and sustainable power source for a compact and reasonable structure.

中文翻译：

压电纳米发电机促进了高度可拉伸和可自充电的超级电容器

软可穿戴电子产品的快速发展提出了对具有内置可伸缩性和可持续性的电源的不断增长的需求。在此，通过使用石墨烯涂层的弹性苯乙烯-乙烯-丁烯-苯乙烯电极和KNN / PVA / H ₃ PO ₄制备了高度可拉伸且可自充电的超级电容器。基压电电解质。如此设计的超级电容器不仅显示出高达300％的高双轴拉伸性，而且还通过持久地利用环境机械能并将其转换为电能，从而展现出令人着迷的自充电性能。最终，可以通过纯掌拍300 s（2 Hz）将这种高度可拉伸的设备充电至约1.0 V，或者通过重复拉伸40 s（1 Hz）将其充电至0.8V。这种可拉伸的设计使此类超级电容器能够与软/可拉伸的电子设备集成在一起，从而成为一种紧凑，合理的结构的可收集，可自动充电且可持续的电源。

更新日期：2020-08-03

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