Water electrolysis for hydrogen fuel production faces challenges due to slow kinetics of the oxygen evolution reaction (OER).Magnetic fields are explored for spin manipulation to enhance OER kinetics and catalyst design.Spin states of electrons play a significant role in catalytic reactions like OER, affecting reaction pathways.Magnetic fields influence catalyst materials' electronic structures, improving OER performance.Spin effects at the catalytic interface enhance reactivity of adsorbed species and electron transfer.Magnetic fields stabilize oxygen intermediates, influencing OER pathways and selectivity.Experimental challenges exist in isolating spin-related effects from other magnetic influences.Ferrimagnetic and ferromagnetic materials show intrinsic spin alignment, benefiting OER kinetics.Computational techniques aid in predicting magnetic field effects on reaction energetics.Understanding spin-controlled catalysis extends beyond water oxidation to various energy-relevant reactions.