For enhanced electrochemical water splitting, to produce clean and green hydrogen, which is the fuel for sustainable energy conversion and storage, high-efficiency and reasonably priced catalysts for the hydrogen evolution reaction (HER) in basic electrolytes are essential. The primary obstacle in green hydrogen is to accomplish continuous and efficient hydrogen evolution at high current densities, which is impossible since prolonged large-current operation quickly degrades the efficiency of hydrogen creation. This work prepared B-PbBr_₂ and S-PbBr_₂ nanocomposites using a simple hydrothermal method to improve electrocatalytic green hydrogen production at industrial current densities.

Synthesised B-PbBr₂ and S-PbBr_₂ catalysts exhibit excellent electrochemical water-splitting activity, low overpotential, high current density, and extended stability lasting more than 12 hours. Our work has led to the development of a new electrocatalyst, which is one of the earth-abundant, stable, and highly effective catalysts for water electrolysis. The S-PbBr₂/NF electrode significantly enhances conductivity, and its nanosheet structure offers a substantial surface area for catalytic activity. This makes it one of the most promising electrocatalysts for the hydrogen evolution reaction (HER) in an alkaline medium. It's potential is underscored by outstanding stability, excellent catalytic activity and a straightforward production method. The low onset potentials of -0.239 V for S-PbBr₂ and -0.242 V for B-PbBr₂ further indicate that both electrodes serve as efficient electrocatalysts for HER