Researchers at Seoul National University have made a significant advancement in green hydrogen production by developing a self-healing electrode for water electrolysis that does not rely on metal catalysts. This breakthrough is crucial as the world seeks to reduce reliance on fossil fuels and achieve 'net-zero' emission goals. The electrode, made solely of nickel, utilizes dynamic polarization controls to enable a self-healing mechanism by allowing trace amounts of iron to bond with nickel on the electrode surface, enhancing its reaction performance. This innovative approach not only reduces production costs by eliminating the need for expensive catalysts but also ensures the longevity and efficiency of the electrolysis process, making green hydrogen more economically viable. The success of the method was demonstrated through stable electrolysis operations lasting over 1,000 hours and further validated in a three-stack cell system, showcasing its scalability and industrial applicability. The advancement in green hydrogen technology is seen as a crucial step towards Korea's transition to a hydrogen-based economy and aligns with the country's commitment to carbon neutrality. This transformative strategy not only enhances the economics and scalability of green hydrogen but also paves the way for a more sustainable and environmentally friendly energy landscape.