High-entropy metal spinel oxide (HEO) is proved to be a promising oxygen evolution reaction (OER) catalyst with high catalytic performance and stability. A short routine synthesis process based on solution combustion was proposed prepare (Co0.25Ni0.25Mn0.25Zn0.25)Fe2O4 HEO in this work. During the process, products were rapidly synthesized melted due high-temperature reaction, then quickly crys...

The development of noble-metal free electrocatalysts is high importance for clean energy conversion applications. MoS$_2$ has been considered as a promising low cost catalyst the hydrogen evolution reaction (HER), however its activity limited by poor conductivity and abundance active sites. Moreover, suitability an effective other reactions, in particluar oxygen reduction (ORR), was hardly expl...

Abstract Herein, a layer of molybdenum oxide (MoO x ), transition metal (TMO), which has outstanding catalytic properties in combination with carbon‐based thin film, is modified to improve the hydrogen production performance and protect MoO acidic media. A film graphene transferred onto layer, after structure doped N S atoms at room temperature using plasma doping method modify electronic intri...

Equilibrium in the electronic subsystem across the solution-metal interface is considered to connect the standard electrode potential to the statistics of localized electronic states in solution. We argue that a correct derivation of the Nernst equation for the electrode potential requires a careful separation of the relevant time scales. An equation for the standard metal potential is derived ...

The efficient electro-reduction of CO2 to chemical fuels and the electro-oxidation of hydrocarbons for generating electricity are critical toward a carbon-neutral energy cycle. The simplest reactions involving carbon species in solid-oxide fuel cells and electrolyzer cells are CO oxidation and CO2 reduction, respectively. In catalyzing these reactions, doped ceria exhibits a mixed valence of Ce...

Cu ion was electrodeposited potentiostatically in 0.05 M CuSO4 aqueous solutions onto a foreign substrate of TiN film sputtered on a stainless steel sheet. The amount of electricity was limited to 31.8 mC cm , which corresponds to a 10 nm thick film, deposited uniformly without any void formation. Two different electrolytic cell configurations were designed in order to discuss quantitatively th...

Photocatalytic water splitting using sunlight is a promising technology capable of providing high energy yield without pollutant byproducts. Herein, we review various aspects of this technology including chemical reactions, physiochemical conditions and photocatalyst types such as metal oxides, sulfides, nitrides, nanocomposites, and doped materials followed by recent advances in computational ...

Water oxidation is efficiently catalyzed by several Ru-based polyoxometalate (POM) molecular catalysts differing in the number, local atomistic environment and oxidation state of the Ru sites. We employ density functional theory calculations to rationalize the dependency of the reaction overpotential on the main structural and electronic molecular properties. In particular, we compare the therm...

Efficient electrochemical splitting of H2O to O2 and H2 fuels has become an important goal in the quest for a renewable source of energy. A major source of the inefficiency of this process is the significant overpotential associated with the anodic oxygen evolution reaction (OER). Understanding the mechanism of the OER could help in identifying the elementary processes contributing to OER overp...

Textured ferromagnetic Fe nanowire arrays were electrodeposited using a rectangular-pulsed potential deposition technique into anodized aluminum oxide nanochannels. During the electrodeposition of Fe nanowire arrays at a cathodic potential of - 1.2 V, the growth rate of the nanowires was ca. 200 nm s-1. The aspect ratio of Fe nanowires with a diameter of 30 ± 5 nm reached ca. 2000. The long axi...