The use of the power and energy functional in the analysis of the electric circuits makes it possible to appreciate the energetic equilibrium state attained in the circuit at a certain moment. This paper is concerned with a demonstration of the principle of minimum dissipated active power for the steady state circuits under nonsinusoidal conditions. It is shown that the equilibrium state is one...

Dealloying has been an essential technique for developing nanostructured catalysts the oxygen evolution reaction (OER). Self-supported active can be fabricated through alloying-dealloying process on metal foil surfaces. This study uses a Ga-assisted strategy combined with electrooxidation and heteroatom doping to fabricate Fe-doped Ni(OH)2/Ni self-supported OER catalyst. We find that surface ph...

Abstract Replacing precious metals in oxygen evolution reaction (OER) catalysts has broad prospects to achieve a viable water splitting system. Since the electrocatalytic OER is four-electron transfer with very sluggish kinetic process, there great interest development of inexpensive, durable, and high-efficiency catalysts. Herein, trimetallic Co-Ni-Ru sulfoselenide bimetallic nanosheets were d...

The electrochromic property of nickel doped vanadium pentoxide (V2O5) deposited by a co-sputtering system is investigated. structural analysis the thin film was done an X-ray diffraction (XRD) analyzer. surface morphology studied field emission scanning electron microscopy (FE-SEM). composition detected Auger analysis. properties device were measured cyclic voltammetry. For undoped V2O5 film, c...

Abstract A solid-state ball-milling method was used to prepare the Li + /F − co-doped LiNi 0.5 Mn 1.5 O 4 materials. XRD characterizations reveal that co-doping decreases x Ni 1-x impurities contents and enhances structural stability. It can be seen from SEM analysis crystal morphology of material changes into a phase octahedron because co-doping. The electrochemical performance tests results s...

Diamond-like carbon (DLC) films with excellent anti-friction and wear resistance, can effectively reduce the energy loss of tribosystems failure parts, but high residual stress limits their application service life. Researchers found that doping heterogeneous elements in matrix alleviate defects microstructure properties DLC (reduce stress; enhance adhesion strength; improve tribological, corro...

We synthesized strontium titanate SrTiO3 (STO), Zr doped Sr1−xZrxTiO3 and (Zr, Ni) co-doped Sr1−xZrxTi1−yNiyO3 samples using solid state reaction technique to report their structural, electrical magnetic properties. The cubic Pm-3m phase of the has been confirmed Rietveld analysis powder X-ray diffraction pattern. grain size materials was reduced significantly due doping as well co-doping in ST...

Most piezoelectric materials are not interactive with visible light, meaning that their band gaps beyond the photon energies of part light spectrum. The first narrow gap (1.1 eV, same as silicon) ferroelectric material based on oxide perovskite structure has been achieved by doping Ni B-sites KNbO 3 and paring 2+ ions oxygen vacancies to form defect dipoles ease band-band transition. This engin...

The novel nickelate superconductors of infinite-layer type feature challenging electronic pecularities in the normal-state phase diagram with doping. Distinct many-body behavior and different dispersion regimes entangled $\{$Ni-$d_{z^2}$, Ni-$d_{x^2-y^2}$$\}$ orbital sector give rise to highly rich physics, which is here studied for case NdNiO$_2$ system. An analysis based on advanced realistic...

• Core-shell Ni-phyllosilicate@Ce 1-x Zr x O 2 catalysts with high coke resistance for DRM. Optimum doping in shell doubles catalyst activity (TOF) TOF increase upon caused by higher lattice oxygen content of and SMSI. Mechanism & kinetic study conducted to probe role DRM activity. Lattice Ce facilitates CH 4 dissociation at metal/support interface. Sandwich structured core-shell Ni-Phyllosilic...