Thermal‑Gated Self‑Repairing Polyimide Separator for Dendrite‑Suppressed Lithium Metal Batteries (IMAGE)

Shanghai Jiao Tong University Journal Center

Thermal‑Gated Self‑Repairing Polyimide Separator for Dendrite‑Suppressed Lithium Metal Batteries

Caption

  • The self-repairing polyetherimide (PEI)-functionalized polyamide-imide (PAI@PEI) nanofiber membrane with a thermal-gated function was designed to enhance the thermal safety properties of lithium metal batteries.
  • The PAI@PEI membrane with the polar amide and imide groups facilitates Li+ dissociation and transport, which is essential for suppressing dendrite growth.
  • The aperture-restored PAI@PEI-based Li||Li cell exhibits an exceptional Li+ transference number of 0.71 and an excellent cycling stability at 1 mA cm−2 for over 750 h.

Credit

Pengpeng Li, Xinluo Li, Yisong Zhou, Yingying Zhang, Nianyu Yue, Jiameng Li, Yumeng Xin, Lianlong Hou, Jiaji Yue, Xin Zhang, Guohua Sun*, Nanjun Chen*.

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License

CC BY-NC-ND

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