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Keywords:

  • Li-ion battery;
  • membrane;
  • separator;
  • phase inversion;
  • safety
Thumbnail image of graphical abstract

Porous separators obtained via phase inversion are promising candidates for alternatives to commercialized polyethylene (PE) separators because of their low production cost and high thermal stability. On page 1417, Min Kim and Jong Hyeok Park demonstrate a novel and simple approach to fabricate a new separator with multiscale pore structure for lithium-ion batteries. The multiscale pore structure obtained by controlled phase inversion plays a role in solving several drawbacks of commercialized PE separators for lithium-ion batteries.