Electro-deposition of graphene on aluminium open cell metal foams

Antenucci, A.; Guarino, Stefano; Tagliaferri, V.; Ucciardello, Nadia

doi:10.1016/j.matdes.2015.01.004

Cited by 44 publications

(25 citation statements)

References 19 publications

(28 reference statements)

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“…Since the density of the produced samples is almost the same (around 513.5 kg/m 3 , after the third phase), they show quite similar values for yield strength and deformation energy. As it can be seen from previous works [2,3], the yield strength of third phase specimen enhances up to 232% in comparison to base aluminum foam. To demonstrate the effects of graphene electrodeposition on aluminum foam mechanical strength, two samples were chosen with very similar starting weight and density, such as 211 kg/m 3 and 2.4 g. During electrodeposition, both samples were treated to obtain almost identical weight percentage change (DP%) in all phases.…”

Section: Mechanical Propertiessupporting

confidence: 58%

“…The sacrificial anode used for the entire process was composed of two copper plates (75 · 76 · 15 mm) connected to each other to completely cover the sample, allowing the best possible results. The anode was thus also designed to make easily accessible that part of the aluminum sample, which is always above the The amount of GNP dispersed in solution and galvanic parameters used are the results of previous optimization works [2,3]. The baths were kept in agitation with a magnetic agitator, located inside the electrolytic cell.…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

“…The search for materials that conduct heat well has become essential for the design of the next generation of heat exchangers. Due to their advantageous characteristics, such as low production costs, wide potential window, high thermal conductivity and mechanical strength, inert electrochemistry [1], carbon materials have been widely used in many technological fields [2,3]. The advantages of carbon materials combined with those of nanostructured materials, such as carbon nanotubes [4,5], carbon nano-fibers [6], highly ordered mesoporous carbons [7,8], etc., have drawn much more attention because of their unusual electronic properties and ability to improve catalytic properties [9].…”

Section: Introductionmentioning

confidence: 99%

“…A 6101-T6 aluminum alloy was chosen for the samples. In this work, the novel method of electro-deposition at low temperature [3] has been applied to 10 PPI (pore per inch) aluminum alloy foam to improve their mechanical strength and thermal behavior. The extremely porous structure of open cells metal foam, with actual density greater than 90%, let them reach particularly high convective heat transfer coefficient, making them promising as compact air-based heat exchangers [34].…”

Section: Introductionmentioning

confidence: 99%

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Thermal and mechanical improvement of aluminum open-cells foams through electrodeposition of copper and graphene

2016

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-Thanks to its planar structure, graphene is characterized by unique properties, such as excellent chemical inactivity, high electrical and thermal conductivity, high optical transparency, extraordinary flexibility and high mechanical resistance, which make it suitable in a very wide range of applications. This paper details the state of the art in graphene coating applied to aluminum open-cells foams for the improvement of their mechanical and thermal behavior. Metallic foams are highly porous materials with extremely high convective heat transfer coefficients, thanks to their complex structure of three-dimensional open-cells. Graphene nanoplatelets have been used to improve thermal conductivity of aluminum foams, to make them better suitable during heat transfer in transient state. Also, an improvement of mechanical resistance has been observed. Before electrodeposition, all the samples have been subjected to sandblasting process, to eliminate the oxide layer on the surface, enabling a better adhesion of the coating. Different nanoparticles of graphene have been used. The experimental findings revealed a higher thermal conductivity for aluminum open cells foams electroplated with graphene. Considered the relatively low process costs and the improvements obtainable, these materials are very promising in many technological fields. The topics covered include surface modification, electrochemical plating, thermo-graphic analysis.

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Section: Mechanical Propertiessupporting

confidence: 58%

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermal and mechanical improvement of aluminum open-cells foams through electrodeposition of copper and graphene

2016

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“…Secondly, referring to Nakada and Ishii's work [30], Al and Si, with atomic ratio < 50% adsorption, are stable at different sites and are adsorbed relatively weakly (physisorbed) on graphene, thus they do not disrupt the graphene structure significantly. Furthermore, the study of Al adsorbed on graphene can serve as a case for graphene-metal contact which is essential for applying graphene in electronic/mechanical devices [32][33][34]. Whilst the study of Si adsorbed on graphene can loosely be related to the study of graphene growth on SiC [35].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Geometrical and orientational investigations on the electronic structure of graphene with adsorbed aluminium or silicon

et al. 2016

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orientational investigations on the electronic structure of graphene with adsorbed aluminium or silicon, (2015), doi: 10.1016/j.matdes.2015.09.111 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. In this contribution, we deployed DFT periodic slab calculations to investigate effect of orientational dependence of Al-and Si-adsorbed graphene systems. We utilized 2 × 2 and 2 × 3 graphene supercells with 1:8 (Al, Si : C) atomic ratios. We observed that the relative orientation of adsorbent atoms exerts profound influence on electronic structures in conjunction with a matching effect caused by the distinct adsorption sites (i.e. bridge, hollow or top). The orientation effects of Si-adsorbed graphene on electronic structure are greater than their Al analogous structures. We anticipate our finding herein, of low adatom concentration on graphene, to prompt re-examination of metal-graphene systems to account for the previously unnoticed -but significant -orientational effect that adds an additional degree of freedom to elemental adsorption on graphene.

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