Jinzhou Fu, Hanwei Wang, Zhichen Du, Yao Liu, Qingfeng Sun, Huiqiao Li
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Outside front cover image: The safety issues of lithium-ion batteries have received attention because they use flammable organic electrolytes and the separator with poor thermal stability. Herein, we design a green, cellulose-based separator in a unique encapsulation structure, in which functional flame retardants are wrapped in microscrolls formed by the self-rolling of cellulose nanosheets upon freeze-drying. The obtained separator shows excellent flame retardancy, and it was quickly extinguished after burning for only 0.67 s in combustion experiment through a radical scavenging mechanism. (DOI: https://doi.org/10.1002/smm2.1182)
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