A Dataset of Nickel and Cobalt Based Phosphides for Electrocatalytic Oxygen Evolution Reaction in Alkaline Solution
Hydrogen as an energy carrier offers a promising route to mitigate environmental issues from fossil fuel use. Efficient and inexpensive electrocatalysts for the oxygen evolution reaction (OER) in alkaline media are critical for advancing alkaline water electrolyzers. Transition metal phosphides (TMPs) are promising (pre-)catalysts for OER. This dataset compiles and compares the electrocatalytic OER activity of nickel- and cobalt-based phosphides. The phosphides were synthesized via solvothermal phosphidization or electrodeposition, and their OER activities were evaluated using linear sweep voltammetry in 1 mol/L KOH. Cyclic voltammetry and electrochemical impedance spectroscopy were also performed. The dataset comprises 312 files totaling 14.5 MB. It provides key electrocatalytic parameters and enables analysis of the influence of metal doping, solvothermal conditions (solvent and precursors), and crystallinity on OER activity. This dataset serves as a benchmark for evaluating Ni and Co phosphide materials for alkaline OER and provides a foundation for designing more active TMP-based electrocatalysts through comparative analysis. The materials may also be applied to other reactions such as hydrogen evolution, alcohol oxidation, and CO2 reduction, relevant to fuel cells, electrolyzers, and metal-air batteries, as well as in lithium/sodium-ion batteries and anticorrosion coatings.