Our country has made a major breakthrough in sodium-ion batteries, completely preventing thermal runaway.

GateUser-bd883c58 · 2026-04-07T04:46:48+00:00

Ask AI · Why Can the Trinity Protection System Overturn Traditional Battery Safety Perceptions?On April 6, the team led by Hu Yongsheng at the Institute of Physics, Chinese Academy of Sciences, published a major breakthrough in *Nature Energy*: the team successfully developed a self-protecting, polymerizable non-flammable electrolyte (PNE). This marks the first time globally that thermal runaway has been completely blocked in an anode-scale sodium-ion battery at the ampere-hour level. The team broke the traditional understanding that “flame-retardant electrolytes equal safety.” Instead of relying on a single line of defense, they built an intelligent safety protection system with a “trinity of thermal stability – interfacial stability – physical isolation.” When the battery temperature rises abnormally to above 150°C, the PNE automatically transitions from liquid to solidify into a dense barrier, like building an “intelligent firewall” inside the battery, completely cutting off the propagation path of thermal runaway.It is worth noting that this breakthrough did not sacrifice the battery’s high performance. The battery also features excellent wide-temperature performance (-40

GateUser-bd883c58

2026-04-07 04:46:48

Ask AI · Why can a three-in-one protection system overturn traditional battery safety beliefs?

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 self-protecting, polymerizable non-combustible electrolyte (PNE). It is the world’s first time to completely block thermal runaway in ampere-hour–class sodium-ion batteries.

The team challenged the traditional belief that “flame-retardant electrolytes equal safety,” moved beyond a single line of defense, and built an intelligent safety protection system with a three-pronged approach: “thermal stability, interfacial stability, and physical isolation.” When the battery temperature rises abnormally to above 150°C, the PNE automatically transitions from liquid to solid state to form a dense barrier—like erecting an “intelligent firewall” inside the battery—to completely cut off the propagation path of thermal runaway.

It is worth noting that this breakthrough did not sacrifice the battery’s high performance. The battery combines excellent wide-temperature performance (-40°C to 60°C) and high-voltage stability (>4.3V), and all materials are mature industrialized products, with strong competitive advantages for industrialization.

This achievement updates people’s understanding of battery safety. In the future, it will be applied to ampere-hour–class sodium-ion battery products of C&K Natrium Technology Co., Ltd., laying a solid foundation for the commercialization and deployment of sodium-ion batteries in fields such as electric vehicles, heavy trucks, and large-scale energy storage.

(Photo provided by the Hu Yongsheng team)

Source: Science and Technology Daily

Author: Cao Xiu ying

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