Graphene and derivatives – Synthesis techniques, properties and their energy applications

Abstract

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Optimization of the PEMFC operating parameters for cathode in the presence of PtCo/CVD graphene using factorial design

“…Generally, researchers demonstrated potential applications of graphene synthesized by top‐down based on Hummers' method. However, the formation of functional groups during the top‐down process can lead to the irreversible effects to the band structure and reduce the electrical conductivity . Graphene having high quality, large effective surface area, and sheet morphology can be produced by the CVD method, in spite of an extreme reaction condition and process cost .…”

“…However, the formation of functional groups during the top‐down process can lead to the irreversible effects to the band structure and reduce the electrical conductivity . Graphene having high quality, large effective surface area, and sheet morphology can be produced by the CVD method, in spite of an extreme reaction condition and process cost . Several researches studied the synthesis and optimization of graphene by different methods .…”

“…45 Graphene having high quality, large effective surface area, and sheet morphology can be produced by the CVD method, in spite of an extreme reaction condition and process cost. 45,46 Several researches studied the synthesis and optimization of graphene by different methods. 47,48 Transferring CVD grown graphene onto fuel cell electrode and applying catalyst is challenging due to van der Waals interactions.…”

When supporting electrolyte matters – Tuning capacitive response of graphene oxide via electrochemical reduction in alkali and alkaline earth metal chlorides

“…Number of different experimental conditions and their effects on the reduction process and the properties of final reduced GO (rGO) can be found in literature [15][16][17][18][19][20][21]. 3 Recently, we have shown general trends in tuning capacitive properties of GO [19]. As GO is reduced it gets de-oxygenated, while its conductivity increases.…”

Synthesis, Study and Applications of Graphene Materials

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Extended AbstractDifferent graphene materials attract great attention of scientists and technologists all over the world. Such materials are used in electronics, adsorption, catalysis and photocatalysis, sensors, batteries, composite materials, medicine, etc [1][2][3][4][5][6].It is shown herein that the interaction of natural graphite with solutions of (NH4)2S2O8, K2S2O8, H2S2O8 or H2SO5 in sulphuric acid results in the formation of peroxosulfate graphite intercalation compounds that are able to expand at low temperature (20-60 o C). These expanded graphite intercalation compounds (EGICs) are composed of weakly bonded graphene nanoplatelets (GNPs), which can be easily exfoliated via different methods.

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