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Dendrite-Free Lithium Metal Anodes Enabled by an Ordered Conductive Ni-Based Catecholate Interlayer for Solid-State

Tianyuan Wang1, Yuezhen Mao1, Jianbing Wang1

  • 1School of Chemical and Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, P. R. China.

ACS Applied Materials & Interfaces
|November 10, 2023
PubMed
Summary

A novel nickel-based catecholate (Ni-CAT) interlayer effectively suppresses lithium dendrite growth in lithium metal batteries. This conductive material guides uniform lithium deposition, enhancing battery safety and longevity.

Keywords:
Li metal anodesconductive 3D interlayerlithium dendritenickel-based catecholatesolid-state lithium batteries

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Lithium metal batteries offer high energy density but suffer from lithium dendrite growth, hindering commercialization.
  • Current interfacial strategies often delay, but do not prevent, dendrite formation in three-dimensional space.

Purpose of the Study:

  • To develop a conductive interlayer for lithium metal batteries that prevents lithium dendrite growth.
  • To guide uniform lithium ion migration and deposition, enhancing battery performance and safety.

Main Methods:

  • Fabrication of a nickel-based catecholate (Ni-CAT) conductive interlayer with vertical nanorod array structures.
  • Interface characterization between the Ni-CAT interlayer, solid electrolyte, and lithium metal.
  • Electrochemical performance testing to evaluate lithium deposition behavior and cycling stability.

Main Results:

  • The Ni-CAT interlayer closely interfaces with the solid electrolyte, reducing charge-transfer resistance.
  • Vertical Ni-CAT nanorod arrays guide lithium ions via a conduction gradient, preventing apical growth.
  • The porous Ni-CAT structure acts as an ion sieve, promoting uniform lithium deposition and minimizing dead lithium formation.

Conclusions:

  • The Ni-CAT interlayer successfully inhibits lithium dendrite growth in lithium metal batteries.
  • This strategy offers a promising solution for safe and stable lithium metal battery operation.
  • The unique nanostructure and properties of Ni-CAT enhance interfacial compatibility and ion transport.