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Flexible Micro-Supercapacitor Based on Graphene with 3D Structure.

Lu Zhang¹, Derek DeArmond², Noe T Alvarez²

¹Department of Mechanical and Materials Engineering, University of Cincinnati, Cincinnati, OH, 45221-0072, USA.

Small (Weinheim an Der Bergstrasse, Germany)

|January 6, 2017

Summary

This summary is machine-generated.

Flexible micro-supercapacitors (MSCs) made from 3D graphene offer excellent performance and durability. Oxygen plasma functionalization further enhances their electrochemical properties for advanced energy storage applications.

Keywords:

chemical vapor deposition flexible graphene micro-supercapacitors plasma functionalization

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Area of Science:

Materials Science
Electrochemistry
Nanotechnology

Background:

Flexible micro-supercapacitors (MSCs) are crucial for portable electronics.
Current MSCs often rely on binders and metal current collectors, limiting flexibility and performance.
3D graphene offers a promising scaffold for binder-free energy storage devices.

Purpose of the Study:

To develop flexible micro-supercapacitors (MSCs) using binder-free 3D graphene.
To investigate the electrochemical performance of these 3D graphene MSCs.
To explore the impact of oxygen plasma functionalization on device performance.

Main Methods:

Fabrication of 3D graphene using chemical vapor deposition (CVD).
Construction of MSCs without binders or metal current collectors.
Electrochemical characterization including cyclic life and areal capacitance measurements.
Oxygen plasma functionalization of the 3D graphene.

Main Results:

The fabricated 3D graphene MSCs demonstrated good flexibility and excellent cyclic stability.
A high areal capacitance of 1.5 mF cm⁻² was achieved at a scan rate of 10 V s⁻¹.
Oxygen plasma functionalization led to further improvements in electrochemical performance.

Conclusions:

Binder-free 3D graphene is a viable material for flexible micro-supercapacitors.
The developed MSCs exhibit promising properties for flexible energy storage.
Oxygen plasma treatment offers a pathway to enhance the performance of graphene-based energy devices.