A groundbreaking advancement in hydrogen technology has emerged from the collaborative efforts of research teams in South Korea and Japan. Led by Professor Kim Sang-ryun from the Gwangju Institute of Science and Technology (GIST), the researchers have successfully stabilized hydrogen in an anionic state within solids, enabling it to flow more freely similar to a liquid form. This pioneering technology leverages a unique ion called 'molecular complex ion' to enhance ion mobility and address the challenges associated with hydrogen's reactivity. By organizing intricate ions and hydrogen anions in a crystal framework known as 'perovskite,' the researchers have vastly improved the mobility of hydrogen anions, providing a promising solution for future sustainable energy systems. The developed technology shows great potential for applications in secondary batteries, fuel cells, and electrolyzer systems, offering a significant step forward in the quest for eco-friendly energy solutions based on hydrogen. Professor Kim Sang-ryun expressed optimism regarding the impact of this research, highlighting its potential to usher in a new era of energy technologies centered around hydrogen.