Chinese researchers unveil breakthrough lithium battery with unprecedented energy density

Researchers at Tianjin University in China have unveiled a significant advancement in battery technology, developing a lithium metal pouch cell with an energy density exceeding 600 watt-hours per kilogram (Wh/kg), and a battery pack reaching 480 Wh/kg. 

The innovation represents a two- to threefold improvement in energy density and endurance compared to conventional lithium-ion batteries, as reported by Xinhua News Agency, a partner of TV BRICS.

This breakthrough, according to the report, comes as demand grows for high-capacity, long-lasting batteries across electric vehicles, consumer electronics, robotics, and the low-altitude economy. Energy density is crucial, but increasing it remains technically challenging.

While lithium metal batteries offer far greater potential than standard lithium-ion alternatives, their development has been hindered by limitations in electrolyte design. The Tianjin team tackled this by introducing a novel "delocalised electrolyte" that optimises solvation structures to enhance both performance and lifespan.

The project led to the development of the high-capacity battery and battery pack, both offering improved safety and cycling stability. A pilot production line is already in place, with the technology deployed in three domestically made micro UAVs.

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