innovative hydrothermal mgfeal-ldh synthesis as an effective nickel foam modification agent for catalyzing water oxidation

Abstract: due to the increasing energy needs and global environmental concerns, extensive research isunderway to find clean energy sources at a low cost. hydrogen has been proposed as a clean fuel and renewable energy source. one of the most methods of producing hydrogen fuel is water splitting. however, the oxidation of water is kinetically slow and limits the rate of the water splitting reaction. therefore, it is necessary to develop materials that can oxidize water effectively [1]. various catalysts for water oxidation have been proposed. the proposed catalyst is mg-fe-al ldh. double-layer hydroxides (ldhs) are a large class of natural and synthetic materials that have received much attention in recent years due to their promising applications in many fields, such as catalysts [2]. after preparing nickel foam, which increases the surface area of the electrode and rate of electron transfer, was used to study water oxidation. techniques such as x-ray diffraction (xrd), energy scattered x-ray (edx), transmission electron microscopy (tem), and field emission scanning electron microscopy (fe-sem) were used to study the structure and morphology of the synthesized sample. the proposed sensor has good stability, which makes it a very active, stable, low-cost and promising catalytic system in the field of energy analysis, conversion and storage. the catalytic performance of oxygen evolution reaction (oer) was studied by chronoamperometry (ca), cyclic voltammetry (cv), and linear sweep voltammetry (lsv), techniques. electrolysis of water using mg-fe-al ldh /nf with a current density of 5 ma cm-2 can be achieved with a cell voltage of 1.41 (vs. rhe) volts in 1 m koh solution. the catalyst synthesized in the oxygen evolution reaction to reach 5 ma cm-2 has a overpotential of only 180 mv.