Core Viewpoint - The research team from Dalian Institute of Chemical Physics has developed a novel core-shell structure hydrogen anion electrolyte and successfully constructed the first prototype hydrogen anion battery, marking a significant advancement in clean energy technology [1][2]. Group 1: Hydrogen Anion Electrolyte Development - The hydrogen anion is identified as a unique and highly reactive energy carrier, with the highest electron density among hydrogen forms, which includes hydrogen cations and hydrogen atoms [1]. - The research on hydrogen anion conduction began in 2018, leading to the development of a room-temperature superfast hydrogen anion conductor in 2023 through a strategy of "lattice distortion suppression of electronic conductivity" [1]. - A new composite hydride material was created by coating cerium hydride (CeH3) with barium hydride (BaH2), exhibiting rapid hydrogen anion conduction, excellent thermal stability, and electrochemical stability, making it an ideal electrolyte material [1]. Group 2: Prototype Hydrogen Anion Battery - Utilizing the new hydrogen anion electrolyte, the team assembled the first hydrogen anion prototype battery using sodium aluminum hydride (NaAlH4) as the positive electrode and cerium dihydride (CeH2) as the negative electrode [2]. - The prototype battery achieved a voltage of 1.9 volts and successfully powered an LED light, demonstrating the feasibility of hydrogen anion batteries for electronic devices [2]. - This new energy storage technology has the potential to play a significant role in large-scale energy storage, hydrogen storage, mobile power sources, and specialized power supplies in the future [2].

Core Insights - The research team from the Dalian Institute of Chemical Physics has developed a novel core-shell structure hydrogen negative ion electrolyte and successfully constructed the first prototype hydrogen negative ion battery, marking a significant advancement in this field [1][2] Group 1: Research Development - The research on hydrogen negative ion conduction began in 2018, leading to the introduction of a "lattice distortion suppression of electronic conduction" strategy in 2023, resulting in a room-temperature ultra-fast hydrogen negative ion conductor [2] - The team created a new composite hydride with low electronic conduction and high stability by coating unstable trihydride cerium with barium hydride thin layers, which exhibits rapid hydrogen negative ion conduction at room temperature along with excellent thermal and electrochemical stability [2] Group 2: Battery Performance - The prototype hydrogen negative ion battery was assembled using sodium aluminum hydride as the positive electrode and hydrogen-poor dihydride cerium as the negative electrode, achieving a discharge capacity of 984 mAh/g and maintaining 402 mAh/g after 20 charge-discharge cycles [2] - The team successfully built a stacked battery that increased the voltage to 1.9 volts, demonstrating the feasibility of powering electronic devices, such as lighting a yellow LED [2] Group 3: Future Prospects - The hydrogen negative ion battery represents a new energy storage technology path, with potential applications in large-scale energy storage, hydrogen storage, mobile power sources, and special power supplies [2] - The research team plans to focus on the development and optimization of core materials for hydrogen negative ion batteries, aiming to expand application scenarios and provide strong technical support for green energy development in China [2]

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].

Core Insights - A new type of core-shell structured hydrogen negative ion electrolyte has been developed by the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, marking a significant advancement in hydrogen energy technology [1][2] - Hydrogen negative ions, characterized by high electron density and strong reactivity, present a unique and promising energy carrier with substantial scientific and application potential [1] Group 1 - The research team initiated the study of hydrogen negative ion conduction in 2018 and introduced a strategy in 2023 to suppress lattice distortion for enhanced electron conductivity [1] - A novel composite hydride material was created by coating barium hydride (BaH2) with trihydride cerium (CeH3), demonstrating rapid hydrogen negative ion conduction at room temperature, along with excellent thermal and electrochemical stability [1] Group 2 - Utilizing the new hydrogen negative ion electrolyte, the team assembled the first prototype hydrogen negative ion battery using sodium aluminum hydride (NaAlH4) as the positive electrode and cerium dihydride (CeH2) as the negative electrode [2] - The prototype battery achieved a voltage of 1.9 volts and successfully powered an LED light, indicating the feasibility of hydrogen negative ion batteries for electronic devices [2] - This innovative energy storage technology has the potential to play a significant role in large-scale energy storage, hydrogen storage, mobile power sources, and specialized power applications in the future [2]