Abstract This study investigates the development and performance evaluation of a bifunctional catalyst tailored for unitized regenerative fuel cells (URFCs), capable facilitating both oxygen evolution reaction (OER) hydrogen (HER) in cell electrolyzer modes. The primary challenge addressed is creation electrocatalysts exhibiting high activity corrosion resistance reduction water oxidation at electrode. A novel structure based on La 0.5 Sr Fe Ti O 3 (LSFT), i.e. LSFT/ZnO/LSFT with thickness...

Being a charge transfer Mott insulator with low metal-insulator temperature, disordered LaFeO3 (as an air electrode) is potential material for electrochemical engineering. High electronic conductivity and inexpensive catalytic activity are the prime requisites electrode materials. Here, we systematically substituted hole (Sr) at La-site electron (Ti) Fe-site. Our objective here twofold, first to get improved behavior understand role of bandgap All investigated samples oxygen-rich show...

In this modern era, Economic Load Dispatch (ELD) is one of the essential issues apprehension in power system process and scheduling. The cost function for each unit ELD problems resolved by using mathematical or analytical methods conservative computation. So, certain problem signified as a non linear optimization having both equality inequality constraint that cannot be directly solved techniques. Subsequently, order to solve evolution soft computing many other prominent approaches have...

Biopolymeric nanoparticles were synthesized using Gellan Gum and loaded with Atenolol, an antihypertensive drug by ionotropic gelation (an easy ecofriendly system) induced BaCl2 as ionic crosslinking agent to improve absorption bioavailability of drug. These characterized scanning electron microscope, fourier-transform infrared spectroscopy, X-ray diffraction analysis dynamic light scattering techniques. Mean particle size obtained was 85.61 nm diffraction, Zeta potential -19.4 mV fibrous...

Polyaniline coated with nanoferrite particles has attractive application in enzyme less biosensor. In this paper, we have reported the synthesis of copper ferrite by Chemical Coprecipitation method and polymerization polyaniline oxidation method. The polyaniline-ferrite composite was characterized different techniques such as XRD VSM. pattern confirmed presence cubic phase size nano scale. magnetic properties were studied vibrating sample magnetometer (VSM) technique at room temperature....

In recent years group III nitrides have gained recognition as being the most important materials for optoelectronics and electronics applications. The zinc-blende modification of GaN AlN is receiving much attention over their wurtzite structure. Our present work deals with detailed ab initio calculations phosphides in phase. plane wave pseudopotential approach used to study different properties material based on concept density functional theory (DFT). converged cut-off energy (E(cut)) set...

In present study, Ni0.5Cu0.5Fe2O4 been was synthesized with Co-precipitation method and prepared samples were annealed at 300°C 500°C. The single phase formation of nickel ferrite confirmed through powder X-ray diffraction (XRD). presence various functional groups FTIR analysis. effects the annealing temperature on particle sizes magnetic properties investigated interpret valid reasons. structural strongly affected by temperature. increases coercivity saturation magnetization values are...

To address the rising demand for H 2 fuel cells, hydrogen is produced through water splitting (electrochemically/photoelectrochemically).Although perovskite-structured materials show promise oxygen reduction reaction (ORR), their effectiveness in evolution (OER) poses a challenge. Consequently, there’s growing bifunctional catalysts exhibiting high electroactivity across broad pH range. One potential candidate exploration as negative electrode batteries and cells LaFeO 3 . With...

The electronic and transport properties of 8-armchair graphene nanoribbon (8AGNR) with defect at different sites are investigated by performing first-principles calculations based on density functional theory (DFT). calculated results show that the 8AGNR semiconductor. introduction 3d transition metals, creates nondegenerate states in conduction band, makes metallic. computed transmission spectrum confirms AGNR semiconducting nature their band gap remain unchanged localized appear when there...

In present study, electronic and transport properties of the 8zigzag MoS2 nanoribbons (8ZMoS2NRs) are investigated using ab-initio density functional theory [DFT]. The calculations were performed nonequilibrium Green's function (NEGF) formalism based on DFT as implemented in TranSiesta code. Results show that defect can introduces few extra states into energy gap, which lead to reveal a metallic characteristic. voltage-current (VI) graph 8ZMoS2NRs threshold current increases after...

Density functional theory-based calculations have been performed to analyze the electronic and magnetic properties of chromium doped (6, 0) GaN nanotube. The structural stability nano-tube has defined in terms formation energy, which increases as a function impurity (Cr). study demonstrates that direct band gap semiconducting nanotube transforms half-metallic Cr introduction GaN. This half metallic nature with high moment can be key parameter for its use spintronics applications.

In present study, the effect of Mn doping was investigated in Zinc ferrite (ZnFe2O4) nanopartclicles (ZFNPs). The annealing on structure and magnetic properties ZFNPs were at different temperatures. These particles synthesized by using Chemical co-precipitation method (CBD). characterized XRD, Transmission Electron Microscopy (TEM) Vibrating sample magnetometer (VSM) for determination their structural as well properties. temperature lattice constant clearly observed results TEM XRD good...

In this study, the thermal properties of EuO, DyO, and GdO compounds were investigated.The calculations performed by using an ab initio approach based on density functional theory (DFT) exchange-correlation taken as generalized gradient approximation (GGA) GGA + U (Hubbard Coulomb onsite correction) implemented in Quantum Espresso suite codes.Results indicate that Seebeck coefficient rare earth oxide is high at low temperatures, it decreases with increasing temperature.The figure merit (ZT)...