Affordable Sources of Commercial Graphene for Energy Applications: ACS_ENFL graphene graphite coal nanoenergy nanomaterials carbon energy
By Bhavna KavetiJul 25 2022Reviewed by Susha Cheriyedath, M.Sc. Graphene is a multifunctional carbon nanomaterial widely synthesized for its applications in composites, energy storage, and sensors.
An article published in the journal Energy and Fuels discussed the recent advances in high-quality graphene synthesis from various naturally available carbonaceous materials with a glimpse of their potential scalability for commercialization. Moreover, previously reported synthetic strategies were explored to determine the most suitable technique to obtain high-quality graphene derivatives with good yield.
Moreover, the delocalized π-electrons present in the aromatic ring of graphene contribute to the improved thermal and electrical conductivity, tensile strength, high stiffness, high specific surface area, impermeability, and higher optical transparency, making graphene an important and cost-effective carbonaceous material for industrial applications.
Coal for Graphene Derivatives Coal is formed due to the natural coalification process and is popularly used to produce electrical energy. The three-dimensional framework of coal is composed of various inorganic and organic materials forming a complex heterogeneous mixture. Coal’s organic domains constitute aromatic/hydroaromatic and aliphatic carbon ring structures interconnected via aliphatic/ether linkages.
On the other hand, bituminous coal, synthesized as raw material for coal-derived graphene films, involved initial electrolysis followed by a chemical vapor deposition process. During the electrolysis, a coal electrolytic cell was used with a 4-molar concentration of sulfuric acid as an electrolyte. The LCP-based material serves as raw material for the high-scale production of low-cost graphene with optimal quality. The advantages of high yield and scalability of the LCP-based graphene derivatives enable their applicability in sensors, energy storage, water treatment, and catalysis.
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