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According to official information from the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, released on May 14, a team led by Researcher Chen Ping at this institute has made significant progress in the development and functional enhancement of new types of hydrogen anion batteries. The team developed the world’s first gas-solid hydrogen anion prototype battery using hydrogen and metals as electrodes (hereinafter referred to as the “gas-solid battery”). This battery can be charged with hydrogen and discharged as well as release hydrogen upon charging, providing a prototype verification for efficient hydrogen storage under normal temperature and pressure conditions through \"co-storage of hydrogen and electricity\". Data shows that hydride ions are the “electron-rich” state of hydrogen. Using hydride anions as charge carriers enables them to possess characteristics such as high reactivity and high energy, making it one of the key approaches for developing next-generation all-solid-state batteries. However, hydride ions are extremely unstable under natural conditions, making it difficult for scientists to utilize them directly in electrochemical energy storage. Since 2018, Chen Ping’s team has been conducting research on hydrogen anion conduction. In 2023, they developed a new type of hydrogen anion electrolyte material that enables the stable conduction of hydrogen anions at low temperatures; subsequently, in 2025, they created the first all-solid-state hydrogen anion prototype battery. Building on the series of achievements obtained with hydride ions, the team further proposed the concept of a \"gas-solid hydride ion battery\". Using metallic magnesium and hydrogen as the active materials for the negative and positive electrodes respectively, the aforementioned team assembled the first gas-solid hydrogen anion battery capable of operating over a wide temperature range. This type of battery allows hydrogen anions to provide high energy to the battery while also enabling an efficient integration with electrochemical hydrogen storage. During discharge, hydrogen is reduced to hydrogen anions at the positive electrode, while metals are oxidized to cations at the negative electrode to form metal hydrides ； During charging, hydrogen molecules and recycled metal are released from the two poles respectively, enabling hydrogen storage while charging and discharging. The experimental results show that during hydrogen charging, the initial discharge capacity of this battery reaches as high as 1526 milliampere-hours per gram ； And when a voltage of 0.3 volts is applied, hydrogen with a weight percentage of about 6.0% (based on MgH2 in the electrode) can be released at room temperature ； After 60 cycles, this battery maintains a capacity retention rate of over 70%, and it can function properly in temperatures as low as -20 degrees and as high as 90 degrees. Furthermore, the team stacked 10 single cells into a series battery pack, achieving an output voltage of over 2.4 volts, which successfully powered an LED bulb – marking the birth of the gas-solid hydrogen anion prototype battery. The energy efficiency analysis further shows that the energy utilization efficiency of this \"hydrogen-electric combined storage\" system can reach 93.9%, which is one-third higher than that of traditional thermal hydrogen storage. It is said that this original achievement provides a new technical approach to overcoming the core technical challenge that has plagued hydrogen energy utilization for over half a century – hydrogen storage. By eliminating the extreme conditions required for traditional hydrogen storage, such as high pressure (700 atm) or cryogenic temperatures (-253°C), it holds the potential to give rise to new hydrogen storage technologies. In the future, the team will focus on developing higher-performance hydrogen anion conductors and electrode materials to improve battery performance, create proprietary technologies, accelerate the transition of hydrogen anion batteries from laboratory stages to practical applications, and promote the development of the hydrogen energy industry.