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Junwei Sha^1,2, Yilun Li, Rodrigo Villegas Salvatierra

¹School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University , Tianjin 300350, China.

|June 14, 2017

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This summary is machine-generated.

Researchers developed a 3D printing method to create graphene foams (GFs) using a nickel catalyst and sucrose. This efficient technique enables rapid, in situ synthesis of high-quality, porous graphene materials.

Area of Science:

Materials Science
Nanotechnology
Additive Manufacturing

Background:

Graphene foams (GFs) possess unique properties for advanced applications.
Existing synthesis methods often require high temperatures and lengthy processes.
There is a need for efficient, scalable methods to produce 3D graphene structures.

Purpose of the Study:

To develop an automated, in situ 3D printing method for synthesizing free-standing graphene foams.
To combine powder metallurgy templating with 3D printing for direct fabrication of GFs.
To investigate the structural and physical properties of the 3D printed graphene foams.

Main Methods:

A mixture of nickel (Ni) powder and sucrose was manually placed on a platform.
A commercial CO2 laser was used to convert the Ni/sucrose mixture into 3D GFs.

Keywords:

3D printing graphene foam high-porosity carbon laser sintering powder metallurgy

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The process utilized Ni as both a catalyst and template for graphene growth.

Main Results:

The 3D printed GFs exhibited high porosity (~99.3%) and low density (~0.015 g cm-3).
The material showed high-quality, multilayered graphene structures.
Achieved electrical conductivity of ~8.7 S cm-1, storage modulus of ~11 kPa, and damping capacity of ~0.06.

Conclusions:

The developed 3D printing method offers a simple, efficient, and rapid approach for in situ GF synthesis.
The 3D printed GFs possess excellent physical properties suitable for various applications.
Potential applications include energy storage, damping materials, and sound absorption, benefiting from rapid design and manufacturing.