3-D GRAPHENE GROWTH BY CHEMICAL VAPOR DEPOSITION FOR ENERGY APPLICATIONS

The tremendous need for more efficient energy systems such as fuel cells, lithium ion batteries and supercapacitors production led to materials development of which 2D and 3D graphene are the most important in terms of better electrical conductivity, large area, easy of functionalization. The influe...

Full description

Saved in:
Bibliographic Details
Published in:Smart Energy and Sustainable Environment 2020-03, Vol.23 (1), p.13
Main Authors: Ion-Ebrasu, Daniela, Andrei, Radu Dorin, Enache, Adrian, Enache, Stanica, Soare, Amalia, Carcadea, Elena, Varlam, Mihai
Format: Article
Language:English
Subjects:
Batteries
Chemical vapor deposition
Electric properties
Electrical conductivity
Ethylene
Fuel cell industry
Fuel cells
Graphene
Graphite
Growth
Methyl methacrylate
Raman spectroscopy
Semiconductor production equipment industry
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The tremendous need for more efficient energy systems such as fuel cells, lithium ion batteries and supercapacitors production led to materials development of which 2D and 3D graphene are the most important in terms of better electrical conductivity, large area, easy of functionalization. The influence of few kinetic parameters on 3D graphene growth on Ni foam substrate catalyst is discussed in this study, among them being: the working temperature in the reaction chamber, time of reaction and ethylene gas flow used as carbon source during the chemical vapor deposition (CVD) process. In order to preserve the 3D-graphene shape during their transfer, the nickel matrix was removed without using poly(methyl methacrylate) (PMMA) as post growth stabilizer of the graphene foam. The samples were characterized by Raman spectroscopy, Scanning Electron Microscopy (SEM), Optical Microscopy (OM). The Brunauer-Emmett-Teller (BET) method was used to calculate the specific surface area, and the pore volume and pore radius were estimated by Barret-Joyner-Halenda method. The results have shown that a 1.6 mm thickness multilayer porous graphene that reproduces the Ni foam was obtained. The pore radius is about 1.9 nm, surface area 9.821 [m.sup.2]/g, and the average graphene mass density is about 12 mg/[cm.sup.3]. As compared with other methods, by CVD is possible to obtain in one step, large area (up to 100 [cm.sup.2] using the CVD installation presented in this paper) of graphene foam, with high porosity and plane surface that allow directly utilization for different applications. Keywords. 3D-graphene foam, nickel, CVD growth
ISSN:2668-957X
2668-957X
DOI:10.46390/j.smensuea23120.77