Cost-effective, active and stable electrocatalysts are crucial for hydrogen production via electrocatalytic water splitting. Here, we describe the preparation of novel nanofibers (NF) made Ni/Gd2O3/NiO heterostructures by electrospinning. The fabricated materials showed high performance evolution reaction (HER) with onset potential values 89 mV, which very close to those platinum (Pt). NiO chem...

Electrochemical hydrogen evolution via water splitting has been regarded as a highly promising technique for fossil-fuel substitution in the future to avoid environmental pollution and energy waste. As half of reaction, oxygen reaction (OER) is major obstacle because sluggish kinetics complex reaction. It imperative urgent develop efficient, low cost earth-abundant electrocatalysts overcome iss...

The hydrogen evolution reaction (HER) on Au with high chemical stability is activated by alloying it Ni. We evaluated the HER activity of AuNi surface alloy prepared at different temperatures single-crystal electrodes in 0.05 M H2SO4. potential cycle, including region Ni oxidative dissolution, further enhanced dealloying Ni, and depended structure substrate following order: AuNi/Au(100)<AuNi/Au...

Although the hydrogen evolution reaction (HER) is one of the fastest electrocatalytic reactions, modern polymer electrolyte membrane (PEM) electrolysers require larger platinum loadings (∼0.5-1.0 mg cm(-2)) than those in PEM fuel cell anodes and cathodes altogether (∼0.5 mg cm(-2)). Thus, catalyst optimization would help in substantially reducing the costs for hydrogen production using this tec...

Energy is the substance foundation of human society. Single−atom catalysts (SACs) have emerged as promising electrode materials in energy field owing to their unique characteristics. It was demonstrated that hydrogen evolution reaction (HER) performance SACs relies on metal−centric species and corresponding local coordination engineering. Herein, recent progress relating asymmetric atomic for H...

A novel triphenylamine (TPA) based donor-π-acceptor (D-π-A) dye is synthesized and its optical electrochemical properties are examined by UV-Vis absorption spectroscopy cyclic voltammetry methods, respectively. The D-π-A plays a role as visible light sensitizer to wide bandgap TiO2 photocatalyst. Hydrogen evolution reaction (HER) carried out using sensitized (Dye/TiO2) under irradiation in the ...

• Bicarbonate reduction is an important pathway for hydrogen evolution on gold and platinum electrodes. The rate of bicarbonate strongly dependent mass transport. cations, in different ways gold. most likely a direct pathway, not mediated by solution acid-base reaction. Buffers are often employed as electrolytes their ability to resist pH changes. Still, they just spectators the electrocatalyti...