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3D Printed Porous Cellulose Nanocomposite Hydrogel Scaffolds
Published on: April 24, 2019
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Multifunctional Nanocomposites with High Strength and Capacitance Using 2D MXene and 1D Nanocellulose
Weiqian Tian1,2, Armin VahidMohammadi3, Michael S Reid1
1Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56, 10044, Stockholm, Sweden.
Advanced Materials (Deerfield Beach, Fla.)
|August 14, 2019
Summary
Researchers developed mechanically robust MXene nanocomposites using cellulose nanofibrils (CNFs). These novel materials offer high strength and excellent electrochemical performance for flexible electronics and printed devices.
Area of Science:
- Materials Science
- Nanotechnology
- Electrochemistry
Background:
- MXenes (2D metal carbides/nitrides) show promise for supercapacitors due to conductivity and pseudocapacitance.
- Low mechanical strength limits MXenes' application in flexible electronics.
Purpose of the Study:
- To enhance the mechanical robustness of MXene materials.
- To develop freestanding MXene nanocomposites for lightweight, flexible electronics.
Main Methods:
- Assembling Ti3C2Tx MXene with 1D cellulose nanofibrils (CNFs).
- Utilizing stable colloidal dispersions for nanocomposite fabrication.
- Characterizing mechanical, electrical, and electrochemical properties.
Main Results:
- MXene/CNF nanocomposites exhibit significantly improved mechanical strength (341 MPa) compared to pristine MXene films (29 MPa).
- High capacitance (298 F g-1) and conductivity (295 S cm-1) are maintained.
- Hybrid dispersions serve as inks for printing flexible micro-supercapacitors.
Conclusions:
- Cellulose nanofibrils effectively enhance MXene mechanical strength without compromising electrochemical performance.
- This approach enables the creation of robust, multifunctional MXene nanocomposites.
- The technology facilitates the fabrication of printed, lightweight structural devices.
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