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Iridium Oxide-reduced Graphene Oxide Nanohybrid Thin Film Modified Screen-printed Electrodes as Disposable Electrochemical Paper Microfluidic pH Sensors

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Self-Supporting Flexible Paper-Based Electrode Reinforced by Gradient Network Structure.

Shaoran Kang^1,2, Zhijian Li¹, Jinbao Li¹

¹College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science &Technology, Xi'an 710021, China.

|March 29, 2023

Summary

This summary is machine-generated.

Researchers developed stronger, more flexible paper-based electrodes using a novel gradient-enhanced skeleton structure. This advancement enhances mechanical properties and electrolyte wettability for flexible electronics applications.

Keywords:

flexibility high capacity level three gradient network reinforced self-supporting paper-based electrode

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Area of Science:

Materials Science
Electrochemistry
Flexible Electronics

Background:

Self-supporting paper-based electrodes suffer from low mechanical strength and flexibility.
These limitations hinder their use in advanced flexible electronic devices.

Purpose of the Study:

To enhance the mechanical strength and foldability of paper-based electrodes.
To improve their performance for flexible electronics applications.

Main Methods:

Utilized FWF (filter paper fiber) as a skeleton fiber.
Incorporated grinding and nanofiber bridging to increase fiber contact area and hydrogen bonds.
Constructed a three-level gradient enhanced skeleton support network structure.

Main Results:

Achieved tensile strength of 7.4 MPa and elongation at break of 3.7% for FWF15-BNF5 electrodes.
Reduced electrode thickness to 66 μm with electrical conductivity of 5.6 S cm⁻¹.
Demonstrated excellent electrolyte wettability (contact angle of 45°) and foldability.
Exhibited superior discharge areal capacity (3.3 mAh cm⁻² at 0.1 C) compared to commercial LFP electrodes.
Showcased good cycle stability with 3.0 mAh cm⁻² capacity after 100 cycles at 0.3 C.

Conclusions:

The gradient enhanced skeleton structure significantly improves mechanical properties and flexibility.
The developed paper-based electrodes show promising performance for flexible energy storage devices.
This work offers a viable pathway for high-performance, robust paper-based electrodes.