Nanostructured graphene composite papers for highly flexible and foldable supercapacitors

Area of Science:

• Materials Science
• Nanotechnology
• Electrochemistry

Background:

• Cellulose fibers (CFs) offer a sustainable and flexible substrate for energy storage materials.
• Developing hierarchical nanostructures is crucial for enhancing the performance of energy storage devices.
• Graphene and its derivatives, like reduced graphene oxide (rGO), are promising due to their excellent electrical conductivity.

Purpose of the Study:

• To create a novel hierarchical nanostructured composite paper for flexible energy storage.
• To integrate reduced graphene oxide (rGO) and polyaniline (PANI) onto cellulose fibers (CFs).
• To fabricate and evaluate flexible and foldable all-solid-state supercapacitors based on the PANI-rGO/CF composite paper.

Main Methods:

• Hierarchical assembly of reduced graphene oxide (rGO) and polyaniline (PANI) onto cellulose fibers (CFs).
• Formation of a nanostructured PANI-rGO/CF composite paper.
• Fabrication of flexible and foldable all-solid-state supercapacitors using the composite paper.

Main Results:

• Successful formation of a hierarchical nanostructured PANI-rGO/CF composite paper.
• Demonstration of flexible and foldable all-solid-state supercapacitors.
• The composite structure enhances the properties for supercapacitor applications.

Conclusions:

• The PANI-rGO/CF composite paper is a viable platform for flexible and foldable energy storage.
• Hierarchical nanostructuring on cellulose fibers is an effective strategy for supercapacitor development.
• This work contributes to the advancement of wearable and portable electronic devices.