Natural Template-Derived 3D Porous Current Collector for Dendrite-free Lithium Metal Battery

Wenyang Zhang, Jialin Li, Haixia Chen, Huixin Jin, Pan Li, Youjian Zhang, Cheng Xu, Shimeng Zhao, Yiqun Du, Jianxin Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Metallic lithium (Li) is an outstanding anode for high-energy storage devices, but dendrite growth impedes its practical application. Herein, similar to molding process of mooncake, a facile strategy of templated etching has been developed to manufacture three dimensional (3D) current collectors with hierarchical pore structures and biomimetic surfaces derived from natural templates. By using polydimethylsiloxane (PDMS) as duplicate templates, 3D surface morphologies of natural surfaces can be printed on Cu foil, and the resuable templates facilitate mass production. By comparison, the 3D porous current collectors largely improve Li deposition behavior and suppress dendrite growth. They exhibit excellent electrochemical performances: high Coulombic efficiency (CE), long life spans of more than 1000h and good cycling performance. The templated etching method overcomes the energy/time-consuming disadvantages of past pore-creating methods and will boost the commercialization of lithium metal batteries.

Original languageEnglish
Article number2050033
JournalNano
Volume15
Issue number3
DOIs
Publication statusPublished - 2020 Mar 1
Externally publishedYes

Keywords

  • 3D current collector
  • biomimetic surface
  • hierarchical pore structure
  • Lithium metal anode
  • solid electrolyte interphase

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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