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Batteries

Breakthrough in Energy Storage: Researchers Develop High-Performance Magnesium-Air Batteries

Strategic Insights

— 1 min read

Chinese researchers from Henan University have made significant strides in the development of magnesium-air batteries, a promising alternative energy source. According to a recent study, the team has successfully created a binary magnesium alloy (Mg-0.1Sr) that exhibits exceptional discharge performance, paving the way for the practical application of these batteries. The study highlights the challenges associated with magnesium anodes, such as self-corrosion and the "chunk effect," which significantly impede their practical use.

Key Takeaways:

  • The researchers created a binary magnesium alloy (Mg-0.1Sr) that exhibits superior discharge performance, with an anode utilization efficiency of 60.6%, specific capacity of 1336.3 mAh g-1, and specific energy of 1872.1 Wh kg-1.
  • The alloy's refined grain size, mitigation of the "chunk effect," and effective suppression of hydrogen evolution contribute to its exceptional performance.
  • However, excessive Sr content leads to galvanic corrosion, accelerating self-corrosion and uneven dissolution of the magnesium anode.
  • The Mg-0.1Sr alloy is identified as a highly promising anode material for magnesium-air batteries.
  • The study demonstrates a simplified and cost-effective strategy for enhancing the performance of Mg-air batteries.
  • The research has been peer-reviewed and published in the Journal of Energy Storage.
  • Authors Li Wang, Shanshan Song, and Hui Sun are affiliated with Henan University and the Henan Key Lab Protect & Safety Energy Storage Ligh.
  • Funding for the research was provided by the National Natural Science Foundation of China (NSFC) and the Basic Research Program of key scientific research projects in Henan province.

Statistics:

  • 60.6% anode utilization efficiency of the Mg-0.1Sr alloy
  • 1336.3 mAh g-1 specific capacity of the Mg-0.1Sr alloy
  • 1872.1 Wh kg-1 specific energy of the Mg-0.1Sr alloy

Sources:

  • NewsRx. Findings from Henan University in Energy Storage Reported (Electrochemical Performance and Discharge Mechanism of Mg-sr Binary Alloys As Anodes for Mg-air Batteries). Energy Weekly News. September 19, 2025; p 79.
  • Wang, L., Song, S. S., & Sun, H. (2025). Electrochemical Performance and Discharge Mechanism of Mg-sr Binary Alloys As Anodes for Mg-air Batteries. Journal of Energy Storage, 130.

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