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Cobweb-Inspired Quintuple Network Structures toward High-Performance Wearable Electrochromic Devices with Excellent

Hongchao Peng¹, Mingfei Pan², Hao Jiang³

¹National Engineering Laboratory for Clean Technology of Leather Manufacture, College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.

ACS Applied Materials & Interfaces

|September 7, 2022

Summary

Researchers developed a stable, wearable flexible electrochromic device (FECD) using a porous polylactic acid (PLA) network inspired by cobwebs. This design overcomes electrolyte leakage issues, enabling high optical modulation and durability for advanced displays.

Keywords:

cobweb inspiration polylactic acid quintuple network structure silver nanowires wearable electrochromic device

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Effect of Bending on the Electrical Characteristics of Flexible Organic Single Crystal-based Field-effect Transistors

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Published on: November 7, 2016

Area of Science:

Materials Science
Nanotechnology
Wearable Electronics

Background:

Flexible electrochromic devices (FECDs) are promising for wearable displays.
Achieving long-term stability in FECDs is challenging due to electrolyte deformation and leakage during bending.

Purpose of the Study:

To develop a highly stable and durable flexible electrochromic device.
To address the limitations of electrolyte stability in wearable electronic applications.

Main Methods:

Fabrication of a porous polylactic acid (PLA) network via electrospinning and nonsolvent-induced phase separation, mimicking cobweb microstructure.
Incorporation of silver nanowires (AgNWs) as a supporting network for electrochromic materials.
Assembly with graphene (GR) electrodes to create a quintuple network structure.

Main Results:

The developed FECD exhibits high optical modulation (>70%) and excellent cyclic stability (95% retention after 1000 cycles).
Demonstrated innovative bending resistance, retaining 84.8% performance after 6000 bending cycles.
The porous PLA network effectively infiltrates electrolytes, mitigating deformation and enhancing transparency.

Conclusions:

This work successfully overcomes the challenge of developing FECDs with high optical modulation and bending resistance.
The novel quintuple network structure provides a robust platform for soft electronics in demanding environments.
Offers a new paradigm for designing durable and high-performance wearable electronic devices.