A research team at Tohoku University has developed a highly stable catalyst through the reconstruction of a Co2Mo3O8 precatalyst, which resulted in the creation of an electrochemically stable Co(OH)2@Co2Mo3O8 catalyst. This catalyst demonstrated a remarkable Faradaic efficiency of 99.9% for hydrogen generation and remained stable for an extended period of over one month, showcasing its potential for practical applications. By manipulating the precatalyst surface states and understanding the reconstruction process, the researchers have paved the way for better rational catalyst design. The study sheds light on how the transformation of precatalysts and electrolytes can impact catalytic performance, offering valuable insights for improving clean energy production and combating environmental issues like pollution and climate change. The experimental data and computational structures from the research have been made accessible on the Digital Catalysis Platform (DigCat), providing a resource for further advancements in catalysis research. The article, titled 'Rational design of precatalysts and controlled evolution of catalyst-electrolyte interface for efficient hydrogen production,' was published in Nature Communications on February 22, 2025. The research not only contributes to the understanding of catalyst design but also emphasizes the potential of clean hydrogen fuel in achieving carbon neutrality goals by the 2050s.