Chinese scientists develop safer, longer-lasting lithium battery system

Chinese researchers have unveiled a breakthrough battery system that could allow lithium cells to operate safely for thousands of hours, paving the way for more durable and stable power sources for electric vehicles and energy grids.
The study, published in the Journal of the American Chemical Society, introduces a new class of electrolytes known as deep eutectic gel electrolytes (DEGEs) made with fluorinated amides. These materials help prevent leakage, overheating, and the formation of dangerous needle-like lithium structures that often compromise battery safety and lifespan.
Batteries built with this new electrolyte, based on 2,2,2-trifluoro-N-methylacetamide, cycled stably for over 9,000 hours and retained more than 80% capacity after 2,500 charge cycles. Even at temperatures up to 80°C, they maintained performance for 300 cycles.
Lead researcher Dr. Tianfei Liu of Nankai University said the design «simultaneously tackles multiple challenges in lithium metal battery development,» offering both enhanced safety and longer durability. Co-author Kai Zhang added that the results could «bridge fundamental chemistry with real-world performance requirements» for the next generation of electric vehicle and grid-scale batteries.