Reduced graphene oxide as a protection layer for Al

Jang, Hye Sook; Kim, Jae‐Hun; Kang, Hong Seong; Chang, Hosik; Choi, Hyunjoo

doi:10.1016/j.apsusc.2017.02.041

Cited by 27 publications

(15 citation statements)

References 38 publications

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“…The persistent increase of the peak currents shown with successive potential scans as observed in Figure 8a, indicates that the deposition of GO on glassy carbon electrode (GCE) has been achieved. Figure 8b shows that the deposited glassy carbon electrode (GCE) modified with the material GO displays an anodic peak (i) and cathodic peak (ii), which are attributed to the large number of electrochemically active oxygen-containing groups of GO planes that are very stable [82,83]. The capacitive current covering from −30 to 0 μA in the CV of Figure 7b, indicates that the materials exhibit pseudocapacitance behavior.…”

Section: Resultsmentioning

confidence: 99%

Graphene Oxide Decorated Nanometal-Poly(Anilino-Dodecylbenzene Sulfonic Acid) for Application in High Performance Supercapacitors

et al. 2019

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Graphene oxide (GO) decorated with silver (Ag), copper (Cu) or platinum (Pt) nanoparticles that are anchored on dodecylbenzene sulfonic acid (DBSA)-doped polyaniline (PANI) were prepared by a simple one-step method and applied as novel materials for high performance supercapacitors. High-resolution transmission electron microscopy (HRTEM) and high-resolution scanning electron microscopy (HRSEM) analyses revealed that a metal-decorated polymer matrix is embedded within the GO sheet. This caused the M/DBSA–PANI (M = Ag, Cu or Pt) particles to adsorb on the surface of the GO sheets, appearing as aggregated dark regions in the HRSEM images. The Fourier transform infrared (FTIR) spectroscopy studies revealed that GO was successfully produced and decorated with Ag, Cu or Pt nanoparticles anchored on DBSA–PANI. This was confirmed by the appearance of the GO signature epoxy C–O vibration band at 1040 cm−1 (which decreased upon the introduction of metal nanoparticle) and the PANI characteristic N–H stretching vibration band at 3144 cm−1 present only in the GO/M/DBSA–PANI systems. The composites were tested for their suitability as supercapacitor materials; and specific capacitance values of 206.4, 192.8 and 227.2 F·g−1 were determined for GO/Ag/DBSA–PANI, GO/Cu/DBSA–PANI and GO/Pt/DBSA–PANI, respectively. The GO/Pt/DBSA–PANI electrode exhibited the best specific capacitance value of the three electrodes and also had twice the specific capacitance value reported for Graphene/MnO2//ACN (113.5 F·g−1). This makes GO/Pt/DBSA–PANI a very promising organic supercapacitor material.

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Section: Resultsmentioning

confidence: 99%

Graphene Oxide Decorated Nanometal-Poly(Anilino-Dodecylbenzene Sulfonic Acid) for Application in High Performance Supercapacitors

et al. 2019

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“…The results can be confirmed with XPS, which enables an analysis over larger areas. Figure 8 introduces an example of utilizing XPS, Raman, and EELS analyses to examine the interfacial features between aluminum and rGO (Jang et al 2017). The authors used PVA to enhance the interfacial bonding between aluminum and rGO by generating a large number of hydroxyl groups on the surface of aluminum plates.…”

Section: Investigation Of Interfacial Featuresmentioning

confidence: 99%

“…8 XPS analysis of ( a ) GO/PVA/Al, ( b ) rGO/Al-p, ( c ) and rGO/Al-d hybrid materials together with ( d ) Raman spectra of pristine GO (black line), rGO/Al-d (green line) and rGO/Al-p (red line). ( e ), (f) HRTEM images of rGO/Al-p and rGO/Al-d together with ( g ), ( h ) their corresponding EELS spectra acquired from the marked points ‘1–6’in ( e ) and ( f ) (Jang et al 2017 ). Reprinted from Jang et al ( 2017 ) ( Appl.…”

Section: Introductionmentioning

confidence: 99%

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Microscopic analysis of metal matrix composites containing carbon Nanomaterials

2020

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Metallic matrix composites reinforced with carbon nanomaterials continue to attract interest because of their excellent mechanical, thermal, and electrical properties. However, two critical issues have limited their commercialization. Uniform distribution of carbon nanomaterials in metallic matrices is difficult, and the interfaces between the nanomaterials and matrices are weak. Microscope-based analysis was recently used to quantitatively examine these microstructural features and investigate their contributions to the composites' mechanical, thermal, and electrical properties. The impacts of the microstructure on these properties are discussed in the first section of this review. In the second section, the various microscopic techniques used to study the distribution of carbon nanomaterials in metallic matrices and their interfaces are described.

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“…Results showed that the amorphous nickel-phosporus with graphene coating exhibited the best corrosion resistance in the cell environment. Haneul et al [74] studied using polyvinyl alcohol (PVA) to enhance interfacial contact bond between a facile solution-generated reduced graphene oxide (rGO) coating and an Al substrate. The PVA, leading to a large amount of hydroxyl groups on the Al surface was found to induce several conjugations between the substrate and rGO, aiding the coating process.…”

Section: Coating With Metal Oxidementioning

confidence: 99%

Evaluating the Effect of Metal Bipolar Plate Coating on the Performance of Proton Exchange Membrane Fuel Cells

et al. 2018

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Environmental concerns of greenhouse gases (GHG) effect from fossil commodities and the fast increase in global energy demand have created awareness on the need to replace fossil fuels with other sources of clean energy. PEM fuel cell (PEMFC) is a promising source of energy to replace fossil fuels. The commercialization of the cell depends on its price, weight and mechanical strength. Bipolar plates are among the main components of PEMFC which perform some significant functions in the fuel cell stack. Metal bipolar plate is considered by the research community as the future material for fuel cells. However, surface coating is required for metals to enhance its corrosion resistance, hydrophilicity and interfacial contact resistance (ICR) in PEM fuel cells. Open pore cellular metal foam (OPCMF) materials have been used to replace the conventional flow field channel in recent times due to its low electrical resistance, high specific area and high porosity; however, it endures the same corrosion problem as the metallic bipolar plate. This investigation offers an overview on different types of bipolar plates and techniques in coating metallic bipolar platse and open pore metal foam as flow field channel materials to improve the corrosion resistance which will eventually increase the efficiency of the fuel cell appreciably.

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Reduced graphene oxide as a protection layer for Al

Cited by 27 publications

References 38 publications

Graphene Oxide Decorated Nanometal-Poly(Anilino-Dodecylbenzene Sulfonic Acid) for Application in High Performance Supercapacitors

Graphene Oxide Decorated Nanometal-Poly(Anilino-Dodecylbenzene Sulfonic Acid) for Application in High Performance Supercapacitors

Microscopic analysis of metal matrix composites containing carbon Nanomaterials

Evaluating the Effect of Metal Bipolar Plate Coating on the Performance of Proton Exchange Membrane Fuel Cells

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