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Batteries

Breakthrough in Lithium Metal Batteries: Researchers Develop Novel Mg-Li-Cu Alloy Anode

Strategic Insights

— 2 min read

Researchers from the Ocean University of China have made a significant breakthrough in the development of lithium metal batteries, a crucial step towards creating more efficient and sustainable energy storage systems. The team, led by Xinbin Li, has created a novel Mg-Li-Cu alloy anode that exhibits exceptional stability, reversibility, and safety. This innovation has the potential to revolutionize the field of secondary batteries, enabling the widespread adoption of electric vehicles and renewable energy sources.

Key Takeaways:

  • The researchers developed a facile method to stabilize lithium metal anode by building high lithiophilic Mg-Li-Cu alloy, inhibiting the growth of lithium dendrites and avoiding parasitic reactions with the electrolyte.
  • The symmetric battery life of Mg-Li-Cu alloy electrodes exceeded 9000 hours at 1 mA cm-2 and 1 mAh cm-2, demonstrating exceptional stability and reversibility.
  • The full cell (LiFePO4 || Mg-Li-Cu) exhibited a specific capacity of 148.2 mAh g-1, with a capacity retention of 96.4%, after 500 cycles at 1 C.
  • The novel strategies for preparation and optimization of Mg alloy pave the way for the application of flexible alloy anode in highly stable lithium metal batteries.
  • The research involved a team of authors from the Ocean University of China, including Shuai Liu, Fangya Li, Kaiwen Ma, Hao Xu, Zhiang Li, Fan Ding, Zhenhua Yan, Runhua Fan, and Hongzhi Cui.

Statistics:

  • 9000 hours: the symmetric battery life of Mg-Li-Cu alloy electrodes at 1 mA cm-2 and 1 mAh cm-2.
  • 148.2 mAh g-1: the specific capacity of the full cell (LiFePO4 || Mg-Li-Cu) at 1 C after 500 cycles.
  • 96.4%: the capacity retention of the full cell (LiFePO4 || Mg-Li-Cu) after 500 cycles at 1 C.
  • 1 mAh cm-2: the current density at which the Mg-Li-Cu alloy electrode demonstrated exceptional stability and reversibility.
  • 1 C: the cycling rate at which the full cell (LiFePO4 || Mg-Li-Cu) exhibited a specific capacity of 148.2 mAh g-1 and capacity retention of 96.4%.

Sources:

  • Mg-Li-Cu alloy anode for highly reversible lithium metal batteries. Journal of Magnesium and Alloys, 2025,13(5):2144-2154. (Journal of Magnesium and Alloys - http://www.journals.elsevier.com/journal-of-magnesium-and-alloys/)
  • NewsRx. Study Results from Ocean University of China in the Area of Magnesium and Alloys Published (Mg-Li-Cu alloy anode for highly reversible lithium metal batteries). Life Science Weekly. July 1, 2025; p 4263.

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