Our country has achieved a major breakthrough in sodium-ion batteries.

Gelonghui April 6｜According to the Science and Technology Daily, on April 6, a team led by Hu Yongsheng from the Institute of Physics, Chinese Academy of Sciences, published a major breakthrough in Nature Energy: the team successfully developed a polymerizable non-flammable electrolyte (PNE) with a self-protection function, marking the first time in the world to achieve complete suppression of thermal runaway in ampere-hour-class sodium-ion batteries. The team broke the traditional understanding that “flame-retardant electrolytes equal safety,” moving beyond a single line of defense to build a three-in-one intelligent safety protection system: thermal stability, interfacial stability, and physical isolation. When the battery temperature rises abnormally to above 150°C, the PNE automatically solidifies from a liquid into a dense barrier—like building an “intelligent firewall” inside the battery—to completely cut off the propagation pathway of thermal runaway.