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Updated: Jun 6, 2025
A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
Published on: August 17, 2016
Rechargeable Lithium-Hydrogen Gas Batteries
Zaichun Liu1,2,3, Yirui Ma1, Nawab Ali Khan1
1Department of Applied Chemistry, School of Chemistry and Materials Science, Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China, Hefei, Anhui 230026, China.
Abstract:
The global clean energy transition and carbon neutrality call for developing high-performance batteries. Here we report a rechargeable lithium metal - catalytic hydrogen gas (Li-H) battery utilizing two of the lightest elements, Li and H. The Li-H battery operates through redox of H2/H+ on the cathode and Li/Li+ on the anode. The universal properties of the H2 cathode enable the battery to demonstrate attractive electrochemical performance, including high theoretical specific energy up to 2825 Wh kg-1, discharge voltage of 3 V, round-trip efficiency of 99.7 %, reversible areal capacity of 5-20 mAh cm-2, all-climate characteristics with a wide operational temperature range of -20-80 °C, and high utilization of active materials. A rechargeable anode-free Li-H battery is further constructed by plating Li metal from cost-effective lithium salts under a low catalyst loading of <0.1 mg cm-2. This work presents a route to design batteries based on catalytic hydrogen gas cathode for high-performance energy storage applications.
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