Three-Dimensional Printed
Graphene Foams
Version 3 2018-06-13, 08:14
Version 2 2017-12-19, 22:29
Version 1 2017-06-21, 12:11
Posted on 2018-06-13 - 08:14
An
automated metal powder three-dimensional (3D) printing method
for in situ synthesis of free-standing 3D graphene
foams (GFs) was successfully modeled by manually placing a mixture
of Ni and sucrose onto a platform and then using a commercial CO2 laser to convert the Ni/sucrose mixture into 3D GFs. The
sucrose acted as the solid carbon source for graphene, and the sintered
Ni metal acted as the catalyst and template for graphene growth. This
simple and efficient method combines powder metallurgy templating
with 3D printing techniques and enables direct in situ 3D printing of GFs with no high-temperature furnace or lengthy growth
process required. The 3D printed GFs show high-porosity (∼99.3%),
low-density (∼0.015g cm–3), high-quality,
and multilayered graphene features. The GFs have an electrical conductivity
of ∼8.7 S cm–1, a remarkable storage modulus
of ∼11 kPa, and a high damping capacity of ∼0.06. These
excellent physical properties of 3D printed GFs indicate potential
applications in fields requiring rapid design and manufacturing of
3D carbon materials, for example, energy storage devices, damping
materials, and sound absorption.
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Sha, Junwei; Li, Yilun; Villegas Salvatierra, Rodrigo; Wang, Tuo; Dong, Pei; Ji, Yongsung; et al. (2017). Three-Dimensional Printed
Graphene Foams. ACS Publications. Collection. https://doi.org/10.1021/acsnano.7b01987
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AUTHORS (14)
JS
Junwei Sha
YL
Yilun Li
RV
Rodrigo Villegas Salvatierra
TW
Tuo Wang
PD
Pei Dong
YJ
Yongsung Ji
SL
Seoung-Ki Lee
CZ
Chenhao Zhang
JZ
Jibo Zhang
RS
Robert H. Smith
PA
Pulickel M. Ajayan
JL
Jun Lou
NZ
Naiqin Zhao
JT
James M. Tour