Dynamic intelligent cu current collectors for ultrastable lithium metal anodes

Jianyu Chen, Jin Zhao, Linna Lei, Pan Li*, Jun Chen, Yu Zhang, Yizhou Wang, Yanwen Ma, Dan Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

Three-dimensional (3D) current collectors have shown great potential in realizing dendrite-free lithium (Li) metal anodes. However, the rigid 3D current collectors could not simultaneously suppress Li dendrite growth and allow Li plating/stripping under high capacities and large current densities. Here, we report a dynamic intelligent Cu (DICu) current collector that dynamically accommodates the volume change by changing the packing density of the assembled particles. The Li/DICu electrode achieves a high Coulombic efficiency of 99.6% after 800 cycles. The symmetrical cell shows exceptional cycling stability under the high current density of 10 mA cm-2. Notably, when assembled in full-cell batteries, the Li/DICu|LiFePO4 battery maintains a specific capacity of 139.5 mAh g-1 at 1 C for 500 cycles, and the Li/DICu|S battery delivers a specific capacity of 804 mAh g-1 after 500 cycles at 0.5 C, corresponding to the best performance among Li metal batteries with Cu-based current collectors to date.

Original languageEnglish (US)
Pages (from-to)3403-3410
Number of pages8
JournalNano Letters
Volume20
Issue number5
DOIs
StatePublished - May 13 2020

Bibliographical note

Funding Information:
This work is jointly supported by NSFC (51772157, 51802161, and 21820102002), Priority Academic Program Development of Jiangsu Higher Education Institutions, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Synergistic Innovation Center for Organic Electronics and Information Displays, Qing Lan Project of Jiangsu Province.

Publisher Copyright:
© 2020 American Chemical Society.

Keywords

  • Cu current collectors
  • Dynamic intelligent structure
  • Li dendrites
  • Li metal anodes
  • Ultrastable performance

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering

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