Surface Chemistry and Macroscopic Assembly of Graphene for by Cheng-Meng Chen

By Cheng-Meng Chen

This PhD thesis offers the newest findings at the tunable floor chemistry of graphene/graphene oxide via systematically investigating the tuning of oxygen and nitrogen containing sensible teams utilizing an cutting edge carbonization and ammonia therapy. moreover, novel macroscopic assemblies or hybrids of graphene have been produced, laying the theoretical origin for constructing graphene-based strength garage units. This paintings should be of curiosity to college researchers, R&D engineers and graduate scholars operating with carbon fabrics, strength garage and nanotechnology.

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By Cheng-Meng Chen

This PhD thesis offers the newest findings at the tunable floor chemistry of graphene/graphene oxide via systematically investigating the tuning of oxygen and nitrogen containing sensible teams utilizing an cutting edge carbonization and ammonia therapy. moreover, novel macroscopic assemblies or hybrids of graphene have been produced, laying the theoretical origin for constructing graphene-based strength garage units. This paintings should be of curiosity to college researchers, R&D engineers and graduate scholars operating with carbon fabrics, strength garage and nanotechnology.

Show description

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20b showed the structure of EDL which is filled with positive charge on the surface of porous electrode (Stern model, ignoring the curvature of hole). The negative charges on both Stern layer and diffusion layer contribute to EDL. 3) 30 1 Literature Review and Research Background Fig. 20 Schematic diagrams of a a two-cell supercapacitor device made of nonporous electrode and b the EDL structure based at a positively charged electrode surface. Reproduced from Ref. [110] by permission of The Royal Society of Chemistry where ɛr (dimensionless constant) is the relative permittivity, ɛ0 (F g−1) is the permittivity of free space, A (m2 g−1) is the specific surface area of electrode by the electrolyte accessibility, d (m) is the effective thickness of EDL (also known as the Debye length).

Reprinted with the permission from Ref. [127]. Copyright 2010 American Chemical Society oxide sheets, which nonconductive. This shows that the quality of bottom carrier and the structure design of nanoparticles are critical to the performance of supercapacitors. ZnO and SnO2 modified graphene also has been reported, but the corresponding capacitance is unsatisfactory, which is around 62 F g−1 [126]. Graphene/polymer nanocomposites have a great potential in supercapacitor. Polyaniline/graphene-based nanomaterial can be easily prepared by electrochemical and chemical methods (Fig.

This shows that the quality of bottom carrier and the structure design of nanoparticles are critical to the performance of supercapacitors. ZnO and SnO2 modified graphene also has been reported, but the corresponding capacitance is unsatisfactory, which is around 62 F g−1 [126]. Graphene/polymer nanocomposites have a great potential in supercapacitor. Polyaniline/graphene-based nanomaterial can be easily prepared by electrochemical and chemical methods (Fig. 22). The capacitance ranged from 233 to 1046 F g−1 based on different composite nanostructure [127–131].

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