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Polymers

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The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...

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A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires

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A Highly Elastic and Reversibly Stretchable All-Polymer Supercapacitor.

Yukun Wang^1,2, Feng Chen³, Zhuoxin Liu²

¹School of Materials Science and Engineering, Beihang University, Beijing, 100191, China.

Angewandte Chemie (International Ed. in English)

|August 24, 2019

Summary

Researchers developed a highly stretchable supercapacitor using a novel double network hydrogel and pure polypyrrole electrodes. This innovative design allows for significant stretching and recovery, maintaining performance after repeated use.

Keywords:

double-network hydrogels elastic supercapacitors polymers polypyrrole

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Published on: November 2, 2011

Area of Science:

Materials Science
Electrochemistry
Polymer Science

Background:

Supercapacitors typically lack stretchability due to hydrogel deformation limitations.
Achieving high stretchability and full recovery in energy storage devices remains a significant challenge.

Purpose of the Study:

To fabricate a highly reversibly stretchable all-polymer supercapacitor.
To overcome the limitations of conventional hydrogels in energy storage applications.

Main Methods:

Developed a novel double network (DN) hydrogel with exceptional mechanical properties.
Utilized pure polypyrrole (PPy) as the electrode material.
Annealed free-standing PPy films to minimize electrode-induced retardance.

Main Results:

The DN hydrogel exhibited 500% stretchability with near 100% recovery.
The fabricated supercapacitors demonstrated full recovery from 100% strain without residual deformation.
Electrochemical performance was maintained after 1000 stretching cycles (excluding bending).

Conclusions:

A highly stretchable and recoverable all-polymer supercapacitor was successfully fabricated.
The developed DN hydrogel and annealed PPy electrodes are promising for flexible energy storage.
This work advances the potential for durable, stretchable electronic devices.