TY - JOUR
T1 - In-situ deposition of three-dimensional graphene on selective laser melted copper scaffolds for high performance applications
AU - Cheng, Kaka
AU - Xiong, Wei
AU - LI, Yan
AU - HAO, Liang
AU - Yan, Chunze
AU - Li, Zhaoqing
AU - Liu, Zhufeng
AU - Wang, Yushen
AU - Essa, Khamis
AU - Lee, Li
AU - Gong, Xin
AU - PEIJS, Ton
PY - 2020/4/18
Y1 - 2020/4/18
N2 - Currently, three-dimensional graphene (3DG) fabrication was restricted by the complicated process, strict chemical reactions as well as structural accuracy. Herein we creatively propose a bottom-up strategy that leverages selective laser melting (SLM) technique to manufacture a three-dimensional (3D) porous copper template. Graphene was then in-situ grown via chemical vapor deposition (CVD) on the obtained template, forming 3DG composites. A combination of conventional graphene growth via CVD technique with SLM fabricated scaffold templates enabled an accurate design and regulation of 3DG from macro-structure (unit type, porosity, aperture) to micro-structure (texture, surface quality) through an elaborately manipulated porous copper scaffold. The 3DG/copper scaffold could achieve around 88 % and 27 % enhancement in electromagnetic interference (EMI) shielding and thermal diffusion, respectively. Particularly, the highest EMI shielding efficiency (SE) can reach up to 47.8 dB at 2.7 GHz and exhibit an average SE of 32.3 dB at the range of 2-18 GHz. The synergistic shielding mechanisms accounted for the improvement derived from the use of hybrid composite materials and precise architecture of the SLM porous structure.
AB - Currently, three-dimensional graphene (3DG) fabrication was restricted by the complicated process, strict chemical reactions as well as structural accuracy. Herein we creatively propose a bottom-up strategy that leverages selective laser melting (SLM) technique to manufacture a three-dimensional (3D) porous copper template. Graphene was then in-situ grown via chemical vapor deposition (CVD) on the obtained template, forming 3DG composites. A combination of conventional graphene growth via CVD technique with SLM fabricated scaffold templates enabled an accurate design and regulation of 3DG from macro-structure (unit type, porosity, aperture) to micro-structure (texture, surface quality) through an elaborately manipulated porous copper scaffold. The 3DG/copper scaffold could achieve around 88 % and 27 % enhancement in electromagnetic interference (EMI) shielding and thermal diffusion, respectively. Particularly, the highest EMI shielding efficiency (SE) can reach up to 47.8 dB at 2.7 GHz and exhibit an average SE of 32.3 dB at the range of 2-18 GHz. The synergistic shielding mechanisms accounted for the improvement derived from the use of hybrid composite materials and precise architecture of the SLM porous structure.
KW - Three-dimensional graphene
KW - chemical vapor deposition
KW - copper porous scaffold
KW - electromagnetic interference shielding
KW - selective laser melting
UR - http://www.scopus.com/inward/record.url?scp=85083885729&partnerID=8YFLogxK
U2 - 10.1016/j.compositesa.2020.105904
DO - 10.1016/j.compositesa.2020.105904
M3 - Article
SN - 1359-835X
VL - 135
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
M1 - 105904
ER -