Researchers developed a solid polymer electrolyte using an in-situ polymerization process to address the tradeoff between ionic conductivity and high-voltage stability. The reported material enables lithium-metal batteries to operate from -40°C to 55°C and maintain stable cycling at 4.5V. The work suggests automotive potential, though commercial readiness, long-term durability, cost, and scale-up details were not established in the provided source.
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.