Nanomaterials (Oct 2023)

Fe<sub>3</sub>O<sub>4</sub>-PVDF Composite Network for Dendrite-Free Lithium Metal Batteries

  • Yun Ou,
  • Chaoyong Ma,
  • Zhiyong Tang,
  • Chenqi Yao,
  • Yunzhuo Zhao,
  • Juanjuan Cheng

DOI
https://doi.org/10.3390/nano13202782
Journal volume & issue
Vol. 13, no. 20
p. 2782

Abstract

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Dendrite growth has been the main trouble preventing the practical application of Li metal anodes. Herein, we present how an Fe3O4-PVDF composite network prepared by using electrospinning has been designed to protect lithium metal anodes effectively. In the symmetrical cells test, the cell with the Fe3O4-PVDF composite network maintains good cycle performance after 600 h (500 cycles) at a current density of 1 mA cm−2 and a plating/stripping capacity of 1 mAh cm−2. The bulky Li dendrite is suppressed and a uniform Li deposition remains after long cycling. The characteristics of this engineered separator are further demonstrated in Li-S full cells with a good cycle performance (capacity of 419 mAh g−1 after 300 cycles at 0.5 C). This work provides a new idea for the protection of lithium metal anodes.

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