The Performance of Graphite/N-Graphene and Graphene/N-Graphene as Electrode in Primary Cell Batteries

Ratih, Dewi; Siburian, Rikson; Andriayani, .

doi:10.31788/rjc.2018.1145007

Cited by 15 publications

(10 citation statements)

References 24 publications

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“…These peaks are in conformity with the graphene moiety. The peak at ∼1650 cm –1 is due to the CC double bond stretching frequency. − The presence of this main peak (marked as dotted area) in the graphene moiety confirms the presence of a backbone skeletal framework of planar carbon sheets.…”

Section: Resultsmentioning

confidence: 88%

Graphene-Coated Halloysite Nanoclay Membrane for the Enhanced Separation of Hydrogen from a Hydrogen–Helium Mixture

Dutta

Das

2022

ACS Appl. Mater. Interfaces

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This study highlights the separation of hydrogen from H2–He mixture gas by a graphene-coated halloysite nanoclay membrane. The graphene-coated clay membrane along with its pure clay counterpart is successfully developed and studied for gas separation using hydrogen (H2)–helium (He) single and mixture gases. Hydrothermal and nonhydrothermal methods were applied for the synthesis of a ″coated″ membrane on a porous alumina substrate from the graphene and halloysite clay. To date, nanoporous zeolites are the potential materials for gas separation based on a molecular sieving mechanism. A similar separation mechanism for hydrogen and helium from mixture gases may not work efficaciously due to the closeness of their kinetic diameter (H2: 2.89 Å and He: 2.6 Å). The presence of defects and torn nanopores between graphene layers along with the different surface charges of the inner and outer layer of halloysite nanotubes facilitates the ″coated″ membrane to show an appreciable H2/He separation factor of ∼4 using H2–He (1:1) mixture gas compared to 2.86 for the pure halloysite membrane. The available charge layer of graphene also has a significant contribution for this increased H2/He selectivity value. The permeate flux of H2 and He through both the graphene-coated clay membrane and pure clay membrane has also been noted. The permeate flux of pure H2 and He was 2 × 10–7 and 1.3 × 10–7 mol m–2 s–1 Pa–1 for the clay membrane, whereas for the ″coated″ clay membrane, the values changed to 0.1 × 10–7 and ∼0.05 × 10–7 mol m–2 s–1 Pa–1 at 100 kPa, respectively.

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Section: Resultsmentioning

confidence: 88%

Graphene-Coated Halloysite Nanoclay Membrane for the Enhanced Separation of Hydrogen from a Hydrogen–Helium Mixture

Dutta

Das

2022

ACS Appl. Mater. Interfaces

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“…This predilection of the GNP_grade C graphene is well-known and attributed to the strong van der Waals interactions [ 50 ]. Comparatively, the grade M samples exposed a unitary flake-like microstructure with well-separated and layered nanoplatelets of variable sizes and orientations [ 58 , 62 , 71 ]. HA : The coarse surface and polyhedral form of the ceramic particles were conserved for all dimensional sorts.…”

Section: Resultsmentioning

confidence: 99%

Selection Route of Precursor Materials in 3D Printing Composite Filament Development for Biomedical Applications

et al. 2023

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Additive manufacturing or 3D printing technologies might advance the fabrication sector of personalised biomaterials with high-tech precision. The selection of optimal precursor materials is considered the first key-step for the development of new printable filaments destined for the fabrication of products with diverse orthopaedic/dental applications. The selection route of precursor materials proposed in this study targeted two categories of materials: prime materials, for the polymeric matrix (acrylonitrile butadiene styrene (ABS), polylactic acid (PLA)); and reinforcement materials (natural hydroxyapatite (HA) and graphene nanoplatelets (GNP) of different dimensions). HA was isolated from bovine bones (HA particles size < 40 μm, <100 μm, and >125 μm) through a reproducible synthesis technology. The structural (FTIR-ATR, Raman spectroscopy), morphological (SEM), and, most importantly, in vitro (indirect and direct contact studies) features of all precursor materials were comparatively evaluated. The polymeric materials were also prepared in the form of thin plates, for an advanced cell viability assessment (direct contact studies). The overall results confirmed once again the reproducibility of the HA synthesis method. Moreover, the biological cytotoxicity assays established the safe selection of PLA as a future polymeric matrix, with GNP of grade M as a reinforcement and HA as a bioceramic. Therefore, the obtained results pinpointed these materials as optimal for future composite filament synthesis and the 3D printing of implantable structures.

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“…The behavior of the supercapacitor was performed by using cyclic voltammetry, galvanostatic charge /discharge and impedance analysis. Graphene oxide was synthesized using the Modified Hummer's method and the graphene-NiO nanocomposite prepared according to the hydrothermal method with GO solution, Ni(NO3)2•6H2O and urea as raw material 74 . The synthesized nanocomposite was characterized by techniques of, Raman spectroscopy, SEM, TGA and XRD by the dispersive energy spectrometer analysis.…”

Section: Graphene/metal Oxidesmentioning

confidence: 99%

A Comprehensive Review on the Nanocomposites of Graphene and Its Derivatives in the Application of Supercapacitors

Divya¹,

Prithiba²,

Rajalakshmi³

2019

RJC

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The unique properties of Graphene-based nanocomposites have attracted numerous investigations in the field of materials science from supercapacitors to drug delivery applications. Graphene has received attention as a probe or electrode material source for supercapacitors because it consists of low electrical resistance, large electrolyte accessibility based on the larger surface area and chemical stability. The extra properties of graphene show some promising application such as optical electronics, composites and others. Supercapacitors are able to store more energy and can be fully charged / discharged at high speeds. This review has been mainly focused on the following points namely synthesis route of Graphene which consists of Bottom-Up and Top-Down approaches, are more difficult and hindering the massive production of graphene. We have also discussed the different techniques utilized for the synthesis of reduced graphene oxide namely thermally, hydrothermally, partially and electrochemically reduced graphene oxide and its electrochemical behavior. Analysis of these results inferred the specific capacitance in the range of 220,223.6, 225 and 230 F/g (acid and neutral). The characterization of Graphene/Nanocomposites by RAMAN, FTIR, SEM and TEM analysis were also reviewed and found to be suitable for supercapacitors. In this review, the current development of the synthesis route of graphene oxide and its composites with future prospects is presented and discussed.

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The Performance of Graphite/N-Graphene and Graphene/N-Graphene as Electrode in Primary Cell Batteries

Cited by 15 publications

References 24 publications

Graphene-Coated Halloysite Nanoclay Membrane for the Enhanced Separation of Hydrogen from a Hydrogen–Helium Mixture

Graphene-Coated Halloysite Nanoclay Membrane for the Enhanced Separation of Hydrogen from a Hydrogen–Helium Mixture

Selection Route of Precursor Materials in 3D Printing Composite Filament Development for Biomedical Applications

A Comprehensive Review on the Nanocomposites of Graphene and Its Derivatives in the Application of Supercapacitors

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