نتایج جستجو برای: nickel foam
تعداد نتایج: 48671 فیلتر نتایج به سال:
Foams offer extremely large surface area per unit mass, making them competitive material for heat exchangers and energy storage systems. Understanding the influence of foam characteristics, i.e., size, distribution concentration pores, ligament defects as well architecture, on thermal transport is important when designing foam-based devices. In this article, we present effective conductivity op...
Nickel foams are excellent candidate materials for gas diffusion layers (GDLs) polymer electrolyte fuel cells (PEFCs) and this is due to their superior structural transport properties. A highly computationally-efficient framework has been developed not only estimate the key mass properties but also examine multi-dimensional uniformity and/or isotropy of these Specifically, multiple two-dimensio...
Application of foam in EOR, increases macroscopic sweep efficiency via awesome increscent of mobility control. Macroscopic manifestation of foam application performance in porous media is complex process that involves several interacting microscopic foam events. Stability as an important factor in foam injection within large reservoirs, depends on several variables including oil saturation, con...
Nickel cobalt phosphide (NiCoP) is emerging as a potential electrocatalyst towards oxygen reduction reaction (ORR) and evolution (OER). However, its ORR/OER activities are sluggish. Here, we investigated the roles of iron dopants in Fe-doped NiCoP (Fe–NiCoP) order to boost kinetics. The density functional theory (DFT) calculations reveal that Fe dopant effectively modulates electron conductivit...
In the present work, NiCo2O4 nanostructures are fabricated in three dimensions (3D) on nickel foam by the hydrothermal method. The nanomaterial was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The nanostructures exhibit nanoneedle-like morphology grown in 3D with good crystalline quality. The nanomaterial is composed of...
Reticulated nickel foams were alloyed with 8–9 wt% Al or 14–18 wt% Cr and 5–9 wt% Al in a three-step method consisting of (i) gas-phase deposition of Cr and/or Al onto the struts of a pure Ni foam by pack-cementation at 1000 C; (ii) homogenization at 1200 C to remove concentration gradients and to solutionize the alloyed struts; (iii) aging at 900 C to form c0 precipitates within the struts. Th...
aluminum foams are a novel branch of advanced materials with superior properties. sandwich structures with aluminum foam core are good energy absorbers. in this paper, mechanical properties and energy absorption of aluminum foam sandwich panels subjected to quasi-static perforation tests with conical-nosed indenter were investigated experimentally. for this purpose sandwich panels consisting of...
Phase change materials (PCMs) are useful means for energy storage and thermal management of thermoelectric generators (TEG) systems. Nevertheless, rate under transient heat loads is slow due to low conductivity PCMs. In this study, copper nickel porous metal foams applied in a PCM on hot side TEG accelerate fusion power output the boundary conditions. Therefore, continuous fluctuating flows wer...
In this paper, we report a facile method to successfully fabricate MnO2 nanoflowers loaded onto 3D RGO@nickel foam, showing enhanced biosensing activity due to the improved structural integration of different electrode materials components. When the as-prepared 3D hybrid electrodes were investigated as a binder-free biosensor, two well-defined and separate differential pulse voltammetric peaks ...
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