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In 2013, "high-tech" became a defining term, with global capital markets increasingly focusing on technology stocks. Beyond financial trends, high-tech also played a critical role in disaster relief efforts, especially in the earthquake-affected regions of Sichuan. One standout innovation was the magnesium air reserve battery developed by the Dalian Institute of Chemical Physics under the Chinese Academy of Sciences. This device made a significant impact during the Sichuan relief operations, drawing attention for its remarkable capabilities.
The magnesium air reserve battery is capable of powering a 10-watt LED light for 30 days or fully charging up to 200 smartphones. With an energy density of 800 watt-hours per kilogram, it outperforms traditional lead-acid batteries by a factor of 30. The battery doesn’t require charging; instead, it can be activated by simply adding water. This feature made it highly valuable in emergency situations where power sources were scarce.
During the Lushan earthquake, scientific teams deployed these batteries as part of their relief efforts. Their presence in the disaster zone was essential, providing power for lighting and charging devices in temporary shelters. A team from another city brought this compact, one-kilogram battery, which quickly became a vital tool for both rescuers and victims. Scientists like Sun Gongquan, a leading researcher at the Dalian Institute, emphasized the battery’s potential to revolutionize portable power solutions.
Although still in the early stages of development, the magnesium air reserve battery has shown great promise. Researchers are working on improving its performance, addressing issues such as anode corrosion and cathode stability. Current prototypes have already achieved a specific energy of 700Wh/kg, matching international standards. Analysts believe that if production scales up, magnesium batteries could significantly boost demand for magnesium metal in the future.
Beyond disaster relief, magnesium air batteries have found applications in electric vehicles. In South Korea, researchers have tested a magnesium-air battery-powered car that can travel up to 800 kilometers on a single charge—equivalent to the distance between Seoul and Busan. The battery offers five times the energy density of lithium-ion batteries and requires less time to recharge. However, challenges remain, particularly regarding cost and efficiency.
While the technology shows great potential, commercialization is still years away. Current fuel costs for magnesium-air vehicles are three times higher than those for gasoline cars. But experts like Dr. Cho Byung-won from the Korea Academy of Science and Technology remain optimistic. They believe that as battery technology and magnesium hydroxide recovery methods improve, the cost will eventually drop, making magnesium-air electric vehicles a viable option in the future.