Fudan R&D Stretchable Linear Supercapacitors

No need to wear a watch, a sleeve is a display screen; mobile phones, GPS do not need to be carried separately, as long as weave into clothes; clothes can also show changes in electrocardiogram in real time... In the near future, electronic products can be worn in the body. The scene is no longer human fantasy.

In order for braids to have built-in electronic functions and be used for a long time, all electronic components are required to be soft and stretchable. Recently, the team of Professor Peng Huisheng of Fudan Polymer Science and Advanced Materials Laboratory has successfully prepared a new type of supercapacitor, which can meet the above requirements. This research work was published in the “Journal of Applied Chemistry”, an authoritative journal in the field of international chemistry.

Elasticity is one of the essential characteristics of flexible electronic devices. Current elastic electronic devices, such as electrochemical supercapacitors, lithium ion batteries, organic solar cells, etc., are all realized on a conventional planar substrate. Portable application equipment must be characterized by light weight, small size, and high efficiency, while also having a certain degree of flexibility. However, up to now, there has been no study on a stretchable high-performance linear supercapacitor, which is mainly limited by the electrode material.

To solve the above problems, Professor Peng Huisheng designed a rotary translation method to successfully prepare a stretchable linear supercapacitor for the first time. This kind of super capacitor is prepared by winding and wrapping on an elastic fiber substrate. The carbon nanotube film prepared by the method has the advantages of high flexibility, damage resistance, high conductivity and stability of thermodynamics and mechanical properties, can be bent, folded and stretched, and can be 100% when stretched 75%. % Keeps the capacitor's performance. This linear capacitor can be further woven into various shapes of fabrics, and can be integrated in a variety of microelectronic devices to meet the future demand for micro-energy.

The research work was published online shortly before the journal “Applied Chemistry”, which published news on the topic of “super stretchable electronic devices”. They believe that “people are in desperate need of wearable electronic devices. In order to achieve long-term stable operation of electronic textiles, all components must be required to be flexible and stretchable. Chinese researchers have now invented a new type of (linear) super. The capacitor completely meets the requirements in this direction."