Record Energy Density in a Cold-Resistant Cell: China's New Lithium-Metal Battery Passes Tests
Published August 12, 10:00
Sources: Interesting Engineering, Science and Technology Daily
Researchers at the Dalian Institute of Chemical Physics, part of the Chinese Academy of Sciences, have built a single-use lithium-metal battery that can keep working at temperatures as low as -40°C. Instead of a rigid metal casing, the cell uses a flat, soft-shell format. Its capacity is 25 amp-hours, and it delivers remarkably strong energy output. For context, extreme cold usually degrades battery performance, so a cell that operates reliably under such conditions is unusual.
Technical Specifications
According to Science and Technology Daily, slow discharge produces more than 750 watt-hours per kilogram. The Safety Laboratory of the China Electronics Standardization Institute verified that the battery withstands a sustained 4C discharge and short spikes up to 10C. At room temperature, output can reach 4,487 watts per kilogram; at -40°C, it holds 447 Wh/kg during a one-hour discharge.
Importantly, this battery is not rechargeable. It can remain in storage for years while losing less than 1% of its charge per year. The performance boost comes from a new cathode material based on a high-entropy oxide. Researchers have already launched a pilot line capable of producing 10 tonnes of this cathode material annually.
Additional trials are now testing the battery for use in drones, robots, space-flight simulators, and field sensor nodes. Independent testing confirms the device's potential for broad use in extreme conditions.
The development of China's new lithium-metal battery is a significant advance toward energy-efficient power sources that can operate in harsh climates. It may create new opportunities in fields such as military and space technology, where low-temperature reliability is critical. — Science and Technology Daily
Further testing and refinement could lead to major innovations in electronics and energy technology.
As advancements in battery technology continue, the emergence of innovative aviation batteries for flying vehicles highlights the growing need for energy solutions that can perform under extreme conditions. This shift not only enhances efficiency but also opens doors for new applications in various fields, from personal transportation to commercial use.