Santosh, M. S. (2022) Nanoarchitectonics with electrochemical additive manufacturing process for printing the reduced graphene oxide. Applied Physics A.

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Abstract

The synthesis process of reduced graphene oxide (rGO) sheets generally requires the printing of graphene oxide (GO) as a frst step and later its reduction through a chemical or thermal route to get the required rGO in the second step. The present work demonstrates the printing of rGO using 0.1% w/v dispersion of GO in water in a single-step process. The method uses the nascent electrochemical additive manufacturing, which allows for non-template-based deposition of microscopically patterned systems. The samples are deposited at 1, 3, and 5 V at 0.1 mm s −1 printing speed. Deposited rGO is characterized using XRD, Raman, and FTIR for various qualitative and quantitative aspects. The surface morphology and topographical studies are performed using SEM and AFM techniques. The RMS roughness calculated using the AFM results, ranging from 5.7 nm to 15.3 nm for 1 to 5 V, indicates the trend of increasing roughness with the deposition potential. The XAS spectroscopy data show that the sample printed at 5 V has the highest purity rGO. The capacitive behaviour of the as-deposited rGO has also been discussed and contrasted with the rGO deposited using other prevalent methods. The specifc capacitance of the micro capacitor was found up to 10.84 F g−1 with coulombic efciencies for 500 cycles at 0.2 A g−1

Item Type:	Article
Uncontrolled Keywords:	Reduced graphene oxide Electrochemical additive manufacturing Micro-capacitor 3D printing Graphene oxide
Subjects:	Coal Gesification
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	02 Jun 2022 05:10
Last Modified:	02 Jun 2022 05:10
URI:	http://cimfr.csircentral.net/id/eprint/2503

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