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2026-04-06 21:54:22
[my country Achieves Major Breakthrough in Sodium-Ion Batteries] On April 6th, the team led by Hu Yongsheng at the Institute of Physics, Chinese Academy of Sciences, published a groundbreaking achievement in *Nature Energy*: the team successfully developed a self-protective polymerizable non-flammable electrolyte (PNE), achieving the world's first complete prevention of thermal runaway in an ampere-hour-level sodium-ion battery. Breaking away from the traditional perception that "flame-retardant electrolyte equals safety," the team has moved beyond a single line of defense, constructing a three-pronged intelligent safety protection system encompassing thermal stability, interface stability, and physical isolation. When the battery temperature abnormally rises above 150°C, the PNE automatically solidifies from a liquid state into a dense barrier, acting like an "intelligent firewall" inside the battery, completely cutting off the propagation path of thermal runaway. Notably, this breakthrough did not sacrifice the battery's high performance. The battery boasts excellent wide-temperature performance (-40°C to 60°C) and high-voltage stability (>4.3V), and all materials are mature industrial products, giving it a significant competitive advantage in industrialization. This achievement refreshes our understanding of battery safety and lays a solid foundation for the commercialization of sodium-ion batteries in electric vehicles, heavy trucks, and large-scale energy storage. (Science and Technology Daily)
