波浪状线性可拉伸超级电容器的研究

Study of the wavy linear stretchable supercapacitor

可拉伸超级电容器在可穿戴领域被广泛应用,它不仅要求具有良好的电容性,同时还要求具有良好的抗拉伸性。为此,实验设计了一种线性可拉伸超级电容器,利用廉价的质软不锈钢细丝制备成线性可拉伸集流体,采用电化学沉积方法,将聚苯胺沉积在不锈钢丝上,结合可拉伸聚合物电解质,制备出固态可拉伸电容器。它具有良好的拉伸循环性,可以被拉伸30%,并且在1 000圈拉伸循环后电化学性能维持初始电容的89%。

Stretchable supercapacitors are widely used in wearable community. It requires not only excellent capacity, but also outstanding stretching stability. Here, stretchable wavy current collectors were designed with commercial available stainless steel wires. Polyaniline was then electrochemically polymerized on the stainless steel wire as the active material. A linear stretchable supercapacitor was assembled with such wavy electrodes and stretchable polymer electrolyte. The stretchable supercapacitor could be stretched by 30% and maintain 89% of its original capacitance after 1000 stretching/releasing cycles.