Engineered oxidation states in NiCo2O4@CeO2 nanourchin architectures with abundant oxygen vacancies for enhanced oxygen evolution reaction performance

Trimetallic FeNiMo Nanofibers as High-Efficiency Electrocatalyst for Robust Oxygen Evolution

“…Nowadays, there is an urgent need for environmentally friendly energy to meet the rapidly growing energy demand and alleviate environmental pollution. − Dihydrogen (H 2 ) is known for its pollution-free, zero-carbon emission, high efficiency, and large energy density; therefore, it is a prime candidate for the renewable energy transition. − Water electrolysis for generating H 2 is drawing widespread interest due to its efficient and economical H 2 generation with no pollution. − Notably, the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are the two processes in the overall water splitting, while the sluggish anodic OER process is the bottleneck. − Thus, developing novel electrocatalysts that improve the efficiency of the OER process is imperative. Unfortunately, the utilization of conventional noble-metal based OER catalysts, including Ir- and Ru-based materials, is limited due to their scarcity, expense and instability. − Transition metal-based compounds, such as metals/alloys, − layered double hydroxides, − oxides, − sulfides, − phosphates, − nitrides, − and selenides, − which possess abundant reserves, economy, and high activity, have garnered significant attention in recent years.…”