首例！我国科学家成功开发

Core Viewpoint - The successful development of the first prototype hydrogen negative ion battery by a team from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, marks a significant advancement in clean energy technology, with potential applications in large-scale energy storage and mobile power sources [1][3][5]. Group 1: Development and Significance - Hydrogen is a crucial component of future clean energy systems, existing in three forms: hydrogen positive ions (protons), hydrogen negative ions, and hydrogen atoms. Hydrogen negative ions have the highest electron density, are easily polarizable, and exhibit the strongest reactivity, making them a unique and promising energy carrier [3]. - The research on hydrogen negative ion conduction was initiated in 2018, leading to the development of a room-temperature superfast hydrogen negative ion conductor in 2023, utilizing a strategy to suppress electronic conduction through lattice distortion [3][5]. Group 2: Prototype Battery Construction - The team created a new core-shell structured composite hydride material by coating barium hydride (BaH2) with cerium trihydride (CeH3), which demonstrated rapid hydrogen negative ion conduction at room temperature, along with excellent thermal and electrochemical stability, making it an ideal electrolyte material [3][5]. - Utilizing this new hydrogen negative ion electrolyte material, the team assembled the first hydrogen negative ion prototype battery using sodium aluminum hydride (NaAlH4) as the positive electrode and cerium dihydride (CeH2) as the negative electrode, achieving a voltage of 1.9 volts and successfully powering an LED light [5].