Material Compatibility Research Articles

Two semi flexible nonplanar double Schiff bases as corrosion inhibitors for mild steel in HCl solution: Experimental and theoretical investigations

Metal materials often suffer acid and alkaline corrosion during long-term service due to the low interfacial compatibility of anti-corrosion materials, which seriously limits their service life and safety. Here, a new strategy for preparing efficient corrosion inhibitors with high interfacial compatibility and environment-friendly was proposed through the synthesized two semi flexible nonplanar double Schiff bases containing two aromatic rings, 4,4’-(1,2-propanediyl)bis(azaneylylidene)bis(methaneylylidene)bis(2,6-dimethoxyphenol) (PAMP) and N,N’-(1,3-propandiyl)bis(1-(2-pyridyl)methanimine) (PPM). The corrosion inhibition efficiencies for mild steel by PAMP and PPM were evaluated in 1.0 mol L-1 HCl solution with weight loss measurement. The weight loss results showed that the maximum corrosion inhibition efficiencies of PAMP and PPM are 87.56% and 91.36% at 30 °C, respectively. The corrosion inhibition enhancements were also explored through electrochemical investigation, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and water contact angle measurement. The results suggested two double Schiff bases are mixed type corrosion inhibitors, and obey Langmuir adsorption isotherm with spontaneous physi- and chemisorption for PAMP whilst spontaneous chemisorption for PPM on mild steel surface to form a compact protective film due to their high interfacial compatibility. The nature of adsorption process of two double Schiff bases on mild steel surface was also inferred by using the adsorption data and the activation parameters. Furthermore, density functional theory (DFT) calculations showed that the energy gaps (ΔE) of the neutral PAMP and PPM molecules are 4.3887 eV and 5.1297 eV, respectively, while the ΔE values of their protonated forms are closer. DFT calculations and molecular dynamic (MD) simulations further disclosed that the difference of the corrosion inhibition effects between PAMP and PPM mostly come from the significant difference of steric hindrance and adsorption morphology together with intrinsic molecular parameters. This strategy is universal for the efficient protection of metal materials in long-term service.

An Overview of Real Gas Brayton Power Cycles: Working Fluids Selection and Thermodynamic Implications

This paper discusses and reviews the main real gas effects on the thermodynamic performance of closed Brayton cycles. Cycles with carbon dioxide as working fluids are taken as a reference and a comparison of the thermodynamic cycle efficiencies that are made with other possible working fluids (pure fluids and fluid mixtures). We fixed the reduced operating conditions, in optimal conditions, so that all working fluids had the same thermodynamic global performances. Therefore, the choice of the working fluid becomes important for adapting the cycle to the different technological requirements. The positive effects of the real gas properties in supercritical cycles were approximately maximal at reduced minimum cycle temperatures of about 1.01 to 1.05, with maximum to minimum cycle temperatures of about 2.2. The use of mixtures furthers widens the application of the field of closed Brayton cycles, thereby allowing a continuous variation in the critical temperature of the resulting working fluid and, in some cases, also making it possible to take the condensation with a significant further increase in the thermodynamic cycle efficiency. The paper also demonstrates the thermodynamic convenience of resorting to mixtures of carbon dioxide and inert gases. Extensive measurements of vapour–liquid equilibria and analysis of the thermal stability and material compatibility are essential for a practical and full use of the real gas Brayton cycles.

Assessing Compatibility of Natural Gas Pipeline Materials with Hydrogen, CO2, and Ammonia

Assessing Compatibility of Natural Gas Pipeline Materials with Hydrogen, CO2, and Ammonia

Characterization of Fe and Cr Dissolution and Reaction Product Formation in Molten Chloride Salts With and Without Impurities

ABSTRACT There is considerable interest in molten chloride salts for several applications including thermal storage and next-generation molten salt reactors (MSRs). Several studies have concluded that Cl salts are highly corrosive to structural materials. Using Oak Ridge National Laboratory’s established methodology, Cl salt compatibility was assessed for candidate Ni-based alloys 230, 600 and 740 H at 600°–800°C in static welded capsules and in flowing thermal convection loop (TCL) salt experiments. Simply drying commercial Cl salt at 550°–650°C and adding~0.05 wt.%Mg was able to produce small specimen mass changes and limited surface attack after 100–1000 h exposures. Intentional additions of H2O, NiCl2 and undried salt were used to better understand the role of impurities and achieve the>50 µm levels of attack reported in other studies. Characterisation of Cr depletion and oxide formation in conjunction with pre- and post-test salt chemistry measurements are being used to understand salt compatibility of structural materials.

Chemical and Instrumental Analysis of Limestone and Red Clay from Makwanpur District for Cement Production

Limestone and red clay are widely used in construction as primary raw materials since they are readily available and economically viable. The present work has been carried out primarily to explore the fresh reserves of acceptable raw materials in the Makawanpur district for producing cement. Four limestone and four red clay samples were collected from different locations in the Makwanpur district. The samples were analyzed using chemical (titrimetric and gravimetric) and instrumental (wave dispersive X-ray fluoroscopy, WDXRF) methods. Chemical, as well as instrumental methods, were utilized not only to authenticate the results but also to evaluate the merits of these methods. Loss on ignition (LOI), determined gravimetrically, ranged from 41.98 to 39.03% for limestone samples and from 9.24 to 7.82% for red clay samples.Chemical analysis of limestone samples revealed the presence of 40.72 to 48.53% CaO, 0.97 to 1.96% Fe2O3, 1.83 to 3.64% Al2O3 and 5.69 to 12.84% SiO2. Chemical analysis of red clay revealed the presence of 2.26 to 3.27% CaO, 9.54 to 14.20% Fe2O3, 12.90 to 19.68% Al2O3 and 46.70 to 61.50% SiO2. The WDXRF analysis of limestone revealed the presence of 39.37 to 50.46% CaO, 0.8 to 2.29% Fe2O3, 1.34 to 3.01% Al2O3 and 4.75 to 17.03% SiO2. The WDXRF analysis of red clay revealed the presence of 1.98 to 3.59% CaO, 9.89 to 13.96% Fe2O3, 12.45 to 19.82% Al2O3 and 47.62 to 60.94% SiO2. The analyzed compositions were found to lie within the range allowed by the Nepal Bureau of Standards and Metrology (NBSM) for the manufacture of high-quality cement. The results from the chemical methods were found to be in good agreement with the results from the instrumental method. This research is expected to contribute to the cement industry not only by providing insight into raw material compatibility but also by evaluating the merits of these methods.

3D-Printed Functional Hydrogel by DNA-Induced Biomineralization for Accelerated Diabetic Wound Healing.

Chronic wounds in diabetic patients are challenging because their prolonged inflammation makes healing difficult, thus burdening patients, society, and health care systems. Customized dressing materials are needed to effectively treat such wounds that vary in shape and depth. The continuous development of 3D-printing technology along with artificial intelligence has increased the precision, versatility, and compatibility of various materials, thus providing the considerable potential to meet the abovementioned needs. Herein, functional 3D-printing inks comprising DNA from salmon sperm and DNA-induced biosilica inspired by marine sponges, are developed for the machine learning-based 3D-printing of wound dressings. The DNA and biomineralized silica are incorporated into hydrogel inks in a fast, facile manner. The 3D-printed wound dressing thus generates provided appropriate porosity, characterized by effective exudate and blood absorption at wound sites, and mechanical tunability indicated by good shape fidelity and printability during optimized 3D printing. Moreover, the DNA and biomineralized silica act as nanotherapeutics, enhancing the biological activity of the dressings in terms of reactive oxygen species scavenging, angiogenesis, and anti-inflammation activity, thereby accelerating acute and diabetic wound healing. These bioinspired 3D-printed hydrogels produce using a DNA-induced biomineralization strategy are an excellent functional platform for clinical applications in acute and chronic wound repair.

Prioritization of heat transfer fluids in parabolic trough solar systems using CFD-assisted AHP-VIKOR approach

Parabolic trough solar collectors (PTSCs) are proven technologies and are used in various fields including concentrating solar power, integrated solar combined cycle, industrial process heat, air conditioning, and desalination. The selection of heat transfer fluid (HTF) is a part of the design consideration of concentrating solar technologies (CST) since its technical specifications have a significant effect on the system configuration, operating conditions, and levelized energy cost. Several HTFs including water, thermal oils, molten salts, and gases are already in use for PTSC systems, and others including liquid metals, ionic liquids, and nanofluids are still being tested. Each HTF has pros and cons; thermal and thermodynamic evaluations are practical to compare the performance of an HTF with that of its counterparts however they are insufficient to attribute a parabolic trough CST in terms of design concerns. This study has presented an integrated AHP-VIKOR (Analytical Hierarchy Process - VIekriterijumsko KOmpromisno Rangiranje) multi-criteria decision making (MCDM) approach assisted by computational fluid dynamics (CFD) to prioritize HTFs, particularly for CST and the results are compared to AHP-TOPSIS (Analytical Hierarchy Process - Technique for Order Preference by Similarity to Ideal Solution) for validation. While AHP is chosen to decide the criteria weights in the multi-criteria process, VIKOR is used as decision making to rank and prioritize alternatives. Water, Therminol VP-1, Solar salt, Hitec, Hitec XL, Liquid sodium, Lead-bismuth eutectic, Carbon dioxide, Air, and Helium are evaluated as the HTF inventory and a comprehensive CFD study is conducted to benchmark their thermal and thermodynamic properties in a high concentration PTSC in terms of solidification temperature, upper thermal stability, collector efficiency, pumping power consumption, receiver temperature gradient, and irreversibilities. In addition, other critical design considerations of HTFs including material cost, heat storage capability, material compatibility, operational safety aspects, operational maturity, and solar field control sophistication are taken into account in the MCDM process. Results show that the current parabolic trough CST should have priority for the HTFs of water and molten salt (Hitec) but molten metals and gaseous fluids would gain more insight in near future. This study presents an original perspective for deciding suitable HTFs in PTSC applications where thermal and thermodynamic analyses are limited.

Industrial Heritage Rethinking: Flexibility Design for Eco-Friendly Environments

The conscious and efficient reuse of historic buildings has turned out to be a fundamental point of European programs for the management and conservation of the Architectural Heritage. In this context, the Industrial Heritage shows architectural and spatial peculiarities that facilitate its change of use and performance updating. In fact, the large internal spaces limit the issue of material compatibility to retrofit interventions on the casing. Often the interventions of reuse of the industrial heritage are solved with new architectures designed to be completely inserted inside the original envelope, remaining independent from it. This work presents the reuse project of an industrial building in the city of Sagunto, Spain, where the logic of the “box within the box” is re-proposed with the aim of spatial and constructive flexibility. The research shows a design methodology that allows the new functional modules inside the old building to be designed according to flexibility requirements and how flexibility design is a means for environmental sustainability in the occasion of disused industrial heritage reuse.

Analytical Solution of the One-Dimensional Transport of Ionic Contaminants in Porous Media with Time-Varying Velocity

The one-dimensional convection–dispersion equation has been widely used to describe the migration process of contaminant leachate through barriers. However, most of the existing solutions are limited to simple conditions. In this study, a one-dimensional convection–dispersion model with time-dependent velocity was established while considering the change in the permeability coefficient. The analytical solution of the model was obtained by using the integral transformation method. Based on the analytical model, three special conditions were assumed for comparison. The results showed that the concentration levels of pollutants inside the barrier would significantly increase with the increase in the flow velocity, and the pollutant concentrations inside the barrier would be increased by four times compared with the normal flow velocity when the flow rate increased by two times. The transports of heavy metal ions with variable velocities through soil–bentonite and soil–attapulgite barriers were predicted under field conditions. The predicted results showed that the breakthrough time would be reduced by as much as two times. In engineering practice, a barrier’s service performance can be improved by controlling the temperature of the seepage field and improving the chemical compatibility of the barrier materials.

Analysis of Channel length, Gate length and Gate position Optimization of III-Nitride/β-Ga2O3 Nano-HEMT for High-Power Nanoelectronics and Terahertz Applications

This research article reports the investigation of performance optimization of the field-plated and recessed gate III-Nitride nano-HEMT on β-Ga2O3 substrate. The optimization is done for channel length, gate length and suitable gate position in order to achieve a better DC and RF characteristics for high power and THz applications. The breakdown voltage and frequency characteristics of HEMTs are typically traded off. However, the proposed III-Nitride nano-HEMT grown over β-Ga2O3 substrate incorporating an optimal channel length, gate size, and suitable gate position exhibit improved breakdown voltage characteristics without sacrificing high-frequency properties. The III-nitride HEMT comprising of 250 nm channel length, 20 nm gate length, and gate position of 120 nm from source and 110 nm from drain exhibited the improved breakdown voltage characteristics and superior RF properties. The major factor contributing to this outcome is an improved lattice compatibility of substrate material with the buffer. This study intends to advance a thorough understanding of a breakthrough III-Nitride HEMT grown on β-Ga2O3 substrate, thereby facilitating further research in this state-of-the-art technology.

Pressure Vessel Design for High Temperature and Pressure Testing on Supercritical Carbon Dioxide

Abstract Supercritical carbon dioxide CO2 has been proposed as working fluid in various types of power plants, thanks to its potential higher efficiency and cost reduction with respect to well-known technology of steam cycles. However, the high operating temperature and pressure conditions pose significant concerns in terms of compatibility of supercritical CO2 with the high-temperature sections of the power block. Typically, to address this problem, experiments are proposed, where samples of different materials are kept in contact with the supercritical CO2 in a pressure vessel in order to test the material compatibility. This research deals with designing an innovative openable pressure vessel capable of withstanding the high temperatures (700 °C) and the pressures (100 bar) typical of those power plants. The results obtained by analytical calculation and the finite element method are consistent. The results obtained with both methods are generalizable and the methodology is applicable to any removable pressure vessel that must withstand 100 bar of pressure and a temperature of 700 °C, application field that is outside the ASME B&PV Code Section VIII division 1, standard usually used for the design of nonnuclear pressure vessels. It is important to emphasize that the use of a removable container allows to reduction of the costs of compatibility tests since otherwise, after each test, the pressure vessel would be disposed of. In addition, this allows a reduction of the environmental impact due to the fact that the new container will not be disposed of after each use.

Modeling and numerical analysis for mechanical characterization of soft tissue mechanism applying inverse finite element technique

Tissue-mimicking materials [e.g., polyvinyl alcohol cryogel (PVA-C)] are extensively used in clinical applications such as tissue repair and tissue engineering. Various mechanical testing techniques have been used to assess the biomechanical compatibility of tissue-mimicking materials. This article presents the development of inverse finite element (FE) techniques that are solved using numerical optimization to characterize the mechanical properties of PVA-C specimens. In this study, a numerical analysis where the displacement influence factor was employed in conjunction with a linear elastic model of finite thickness was performed. In the analysis, the effects of Poisson's ratio, specimen aspect ratio, and relative indentation depth were investigated, and a novel mathematical term was introduced to Sneddon's equation. In addition, a robust optimization algorithm was developed in MATLAB that utilized FE modeling for parameter estimation before it was rigorously validated.

Technological Support for Evaluation of Hydrogen Compatibility of Materials in Laboratory Conditions

Materials selection for hydrogen service is needed to support the deployment of hydrogen as a fuel as well as the development of codes and standards for stationary hydrogen use, hydrogen vehicles, refueling stations, and hydrogen transportation. Hydrogen energy infrastructure is currently in the process of development and in preparation for mass transportation of hydrogen gas and methane-hydrogen media involves significant use of the existing network of gas pipelines and formation of a network of hydrogen pipelines. Materials property measurement is needed on deformation, fracture and fatigue in hydrogen-containing media. Determination of steel properties such as strength, crack and fatigue resistance are priority to ensure safe design of pipelines transporting hydrogen gas or methane-hydrogen mixture. At the same time, there is a problem in technological support for evaluation of hydrogen compatibility of materials in laboratory conditions for evaluation of hydrogen embrittlement, depending on hydrogen concentration, methods and modes of loading, temperature, pressure and actual properties of materials.

Physical Modeling of Steel Resistance to Hydrogen Embrittlement

Hydrogen can be used in the same energy processes as natural gas and become a tool for implementing the transition to a sustainable low-carbon economy. The level of contamination resulting from controlled combustion of hydrogen or methane-hydrogen mixture is relatively low, which will significantly reduce CO2 emissions. However, the use of hydrogen can involve considerable difficulties associated with the hydrogen compatibility of materials. With the increase in the production, storage and transportation of hydrogen gas, including through gas pipelines, hydrogen-resistant materials are needed. The main problem with hydrogen is its embrittling effect. Under the influence of hydrogen, pipelines materials can probably have the following: hydrogen charging of the surface layer under pressure, loss of plasticity at tensile loads, formation of cracks and blisters (by decogesia mechanism), diffusion to the stress concentrator according to adsorption theory, accumulation of hydrogen at the top of the crack (which can lead to cracking) and so on. To assess the possibility of using a pipeline system for transportation of hydrogen gas in large volumes, it is necessary to know hydrogen compatibility of pipe steel. Physical modeling of steel resistance to hydrogen embrittlement can be carried out using electrochemical and gas charging methods.

Collagen-Based Micro/Nano Fibrous Constructs: Step-By-Step Reverse Biomimetics of Structure and Mechanical Function

Multiscale micro–nano fibrous structures are a cutting-edge research area in material science and have drawn the attention of scientists in recent years. These structures are widely distributed in nature’s materials and hold fascinating and unique properties, such as mechanical behaviors, high surface area to volume ratio, and special multiscale biological functionalities. Herein, we demonstrate step-by-step biomimetics of a multiscale composite material system and the influence of the different structural mechanisms on mechanical behavior. This is done using systematic biomimetics and investigation of the mechanical effect of every constituent. We have fabricated and characterized mechanically and structurally different material systems to get a comprehensive understanding of the structure–function relationship in multiscale biomimetic constructs (MSBCs) and examine the influence of the material selection and structure. We first characterized the electrospun nanofibers made of polyamide 6 (PA6) and gelatin-polyamide 6 (GPA6) and then constructed and characterized the combined constructs. Our micro–nano fibrous structures were constructed from combined unique coral collagen microfibers and PA6 and GPA6 nanofibers. These hierarchical structures demonstrated an entangled network of nanobridges among the micro collagen fibers. However, the GPA6-collagen structures showed better connectivity with the microfibers and were significantly stiffer and stronger than the PA6-collagen structures due to the material compatibility. Furthermore, our structures demonstrated a considerable resemblance with soft tissue structures. We embedded the MSBC in alginate hydrogel to form biocomposites that displayed a hyperelastic nonlinear behavior with significantly improved toughness and a remarkable similarity to the mechanical behavior of native soft tissues. Our results present great potential to be further developed as tailor-designed multiscale next-generation specialized structures for soft tissue repair and replacement.

Evaluation of the state of practice asphalt binder and mixture tests for assessing the compatibility of complex asphalt materials

The present study aims to evaluate binder and mixture testing methods for capturing the compatibility of complex asphalt materials consisting of different virgin binder sources, reclaimed asphalt pavement (RAP) materials and recycling agents (RA). Binder evaluation methods include the saturate, aromatic, resin and asphaltene (SARA) fractionation, advanced polymer chromatography (APC) analysis, differential scanning calorimeter (DSC) and rheological measurements. Mixture performance tests include the complex modulus (E*), direct tension cyclic fatigue (DTCF), disk-shaped compact tension (DCT) and semi-circular bending (SCB) fracture tests. The results from the testing and analysis indicate that the rheological characterisation of asphalt binder or mixture may not capture the incompatibility between virgin binder, RAP and RA. Binder DSC analysis as well as mixture fracture tests have shown promise to evaluate the compatibility of complex asphalt materials with different virgin binders, RAP and RA, as well as the effect of incompatibility on mixture performance.

Van der Waals-Interface-Dominated All-2D Electronics.

The interface is the device. As the feature size rapidly shrinks, silicon-based electronic devices are facing multiple challenges of material performance decrease and interface quality degradation. Ultrathin 2D materials are considered as potential candidates in future electronics by their atomically flat surfaces and excellent immunity to short-channel effects. Moreover, due to naturally terminated surfaces and weak van der Waals (vdW) interactions between layers, 2D materials can be freely stacked without the lattice matching limit to form high-quality heterostructure interfaces with arbitrary components and twist angles. Controlled interlayer band alignment and optimized interfacial carrier behavior allow all-2D electronics based on 2D vdW interfaces to exhibit more comprehensive functionality and better performance. Especially, achieving the same computing capacity of multiple conventional devices with small footprint all-2D devices is considered to be the key development direction of future electronics. Herein, the unique properties of all-2D vdW interfaces and their construction methods are systematically reviewed and the main performance contributions of different vdW interfaces in 2D electronics are summarized, respectively. Finally, the recent progress and challenges for all-2D vdW electronics are discussed, and how to improve the compatibility of 2D material devices with silicon-based industrial technology is pointed out as a critical challenge.

Mechanical and optical performance evaluations of embedded polyimide and PEEK coated distributed optical sensors in glass fibre reinforced composites with vinyl ester resin systems

Embedded optical fibre sensors (OFSs) offer the potential to monitor the internal strains at various stages during the manufacturing and service life of fibre-reinforced polymer (FRP) composite structures. Various aspects associated with the embedment of OFSs, such as integration, material compatibility, and sensing performance of the embedded sensor needs to be investigated to develop reliable OFSs based internal sensing platform for composite structures. In this study, Polyimide (PI) and Polyether ether ketone (PEEK) coated optical fibres (OF) were embedded into glass fibre-reinforced polymer (GFRP) composites to evaluate four important aspects associated with the embedment of OFs, which include; i). Structural integrity of the OFs against chemical reactions from vinyl ester resin and its additives through immersion testing, ii). Methods of integrating the OFs into layered glass fibres for the vacuum resin infusion manufacturing process, iii). Sensing performance of the embedded OFs during manufacturing and structural testing (tensile and compressive), and iv). Internal structural integrity of the embedded OFs and the host composite structure using X-Ray micro-computerised tomography technique (μ-CT). The results from the immersion testing and manufacturing process monitoring showed that both PEEK and PI coated OFs can resist the chemical and mechanical stresses caused by resin polymerisation during curing process. The subsequent mechanical testing showed a similar sensing performance by the PI and PEEK coated OFs. Under tensile loads, the OFs monitored the tensile strain distribution up to 7,000 με and compressive strain distribution up to −1,200 με under flexural loading without compromising their optical performance. Finally, the μ-CT scanning results had shown a minimal structural deterioration of the embedded OFs and host composite structure. The outcomes from this detailed experimental investigation on the embedment of OFS in GFRP structures provided useful information towards the integration and performance of optical sensors in composite structures.

Epitaxial Growth of Aurivillius Bi3Fe2Mn2Ox Supercell Thin Films on Silicon

Nanoelectronic devices integrated with functional complex oxides have drawn much attention in recent years. However, due to material and processing compatibility issues, integrating functional complex oxides with Si-based devices is challenging, and success has been limited. As an example, the Bi3Fe2Mn2Ox (BFMO) supercell system, a single-phase layered oxide made by compositing BiFeO3 and BiMnO3, has been studied for much of the past decade for its unusual layered Aurivillius structure and magnetic and ferroelectric properties. However, most of the BFMO thin film growth has been demonstrated on single-crystal oxide substrates such as SrTiO3 and LaAlO3. In this work, we demonstrate that the BFMO layered supercell phase can be integrated on Si with high epitaxial quality using a buffer stack of TiN/SrTiO3/CeO2. Further understanding of the strain-controlled growth of the BFMO supercell phase has allowed such Si integration. Microstructure, magnetic, ferroelectric, and optical properties of the BFMO films on Si have been characterized and compared with those of BFMO on SrTiO3 single-crystal substrates, demonstrating comparable epitaxial quality and physical properties. Integrating multiferroic BFMO oxides on Si demonstrates the potential of layered supercell oxides in practical device applications such as ferroelectric field effect transistors.

Autonomous electrochemical system for ammonia oxidation reaction measurements at the International Space Station

An autonomous electrochemical system prototype for ammonia oxidation reaction (AOR) measurements was efficiently done inside a 4'' x 4'' x 8'' 2U Nanoracks module at the International Space Station (ISS). This device, the Ammonia Electrooxidation Lab at the ISS (AELISS), included an autonomous electrochemical system that complied with NASA ISS nondisclosure agreements, power, safety, security, size constrain, and material compatibility established for space missions. The integrated autonomous electrochemical system was tested on-ground and deployed to the International Space Station as a “proof-of-concept” ammonia oxidation reaction testing space device. Here are discussed the results of cyclic voltammetry and chronoamperometry measurements done at the ISS with a commercially available channel flow-cell with eight screen-printed electrodes, including Ag quasi-reference (Ag QRE) and carbon counter electrodes. Pt nanocubes in Carbon Vulcan XC-72R were used as the catalyst for the AOR and 2 μL drop of Pt nanocubes/ Carbon Vulcan XC-72R, 20 wt%, ink was placed on the carbon working electrodes and allowed to dry in air. After the AELISS was prepared for launch to the ISS, a 4 days delayed (2 days in the space vehicle Antares and 2 days space transit to the ISS) cause a slight shift on the Ag QRE potential. Nevertheless, the AOR cyclic voltametric peak was observed in the ISS and showed ca. 70% current density decrease due to the buoyancy effect in agreement with previous microgravity experiments done at the zero-g aircraft.