全球首块！我国研发出氢负离子原型电池

Core Viewpoint - The research team from Dalian Institute of Chemical Physics has developed a new type of hydrogen negative ion electrolyte and constructed the world's first prototype hydrogen negative ion battery, marking a significant advancement from conceptualization to experimental validation [1][2]. Group 1: Development of Hydrogen Negative Ion Battery - The hydrogen negative ion battery is considered a crucial component of future clean energy systems, utilizing hydrogen in three forms: hydrogen positive ions (protons), hydrogen negative ions, and hydrogen atoms [1]. - Unlike conventional lithium-ion batteries, hydrogen negative ion batteries use hydrogen negative ions as the charge carriers, which have high electron density and strong reactivity, making them a unique and promising energy carrier [1][2]. Group 2: Research Progress and Innovations - The research team initiated the study of hydrogen negative ion conduction in 2018 and proposed a strategy in 2023 to suppress electronic conduction through lattice distortion, leading to the development of a room-temperature superfast hydrogen negative ion conductor [2]. - A new core-shell structured composite hydride was created using barium hydride with low electronic conduction and high stability, which exhibits rapid hydrogen negative ion conduction at room temperature, along with excellent thermal and electrochemical stability [2]. Group 3: Experimental Results - The prototype hydrogen negative ion battery was assembled using sodium aluminum hydride as the positive electrode and cerium dihydride as the negative electrode, achieving a discharge capacity of 984 mAh/g for the first time [2]. - After 20 charge-discharge cycles, the battery maintained a capacity of 40 mAh/g, and a stacked battery configuration was able to increase the voltage to 1.9 volts, successfully powering a yellow LED light, demonstrating its feasibility for electronic devices [2]. Group 4: Future Implications - The hydrogen negative ion battery represents a novel energy storage technology pathway, with potential applications in clean energy storage and conversion [2].