Tohoku University Breakthrough: Secondary Phase Engineering Solves Solid-State Magnesium Battery Bottleneck
Original: Mg2Sn 化合物成了關鍵，東北大學用二次相工程突破固態鎂電池瓶頸
Tohoku University researchers used secondary phase engineering to boost solid-state magnesium battery cycle life by 400x, operating stably for over 1,300 hours.
Researchers at Tohoku University have developed a novel magnesium-tin (Mg-Sn) alloy anode for solid-state magnesium batteries. By utilizing "secondary phase engineering," they turned detrimental interfacial reactions into an advantage. This breakthrough extends the battery's cycle life by over 400 times, achieving stable operation for more than 1,300 hours.
As global demand for safe, high-energy-density energy storage technology continues to grow, solid-state magnesium batteries are regarded as a highly promising next-generation battery technology due to their high safety, abundant resources, and high theoretical energy density. However, solid-state magnesium batteries have long faced a fatal bottleneck: the interfacial reaction between the metallic magnesium anode and the solid electrolyte is extremely unstable, easily causing the battery to fail within a very small number of cycles.
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