As global efforts intensify to combat climate change and reduce fossil fuel consumption, clean hydrogen production technologies like water electrolysis are gaining traction. Although conventional water electrolysis faces challenges with energy efficiency, advancements in chemical water-assisted electrolysis offer a promising solution. This approach involves substituting the water oxidation reaction with various chemical reactions to produce hydrogen at a lower voltage, enhancing energy efficiency and promoting environmental improvement. Researchers, including Professor Ho Won Jang from Seoul National University, are exploring catalyst design strategies to address overpotential issues and improve the efficiency of chemical water-assisted electrolysis. Despite existing technical challenges such as catalyst durability and low-voltage operation, ongoing studies on electrochemical mechanisms and AI-driven catalyst design aim to overcome these hurdles. Industrial applications require high current density and long-term stability, driving developments in membrane electrode assembly and high-performance fuel cell-type devices. Overall, the future of green hydrogen production through chemical water electrolysis looks promising, with the potential to play a significant role in sustainable, clean energy solutions.