Covalent Organic Frameworks Construct Precise Lithiophilic Sites for Uniform Lithium Deposition

Yun Wei Song, Peng Shi, Bo Quan Li, Xiang Chen, Chang Xin Zhao, Wei Jing Chen, Xue Qiang Zhang, Xiao Chen, Qiang Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

82 Citations (Scopus)

Abstract

Lithium (Li) metal represents a promising anode material for constructing high-energy-density rechargeable batteries but is severely limited by uncontrolled Li dendrite growth. Introducing a Li host effectively relieves Li dendrite growth, while precise construction of the lithiophilic sites is essential but insufficient among the current strategies. In this contribution, a covalent organic framework is employed as a Li host to precisely construct the lithiophilic sites with well-defined chemical structure and uniform geometric distribution at the atomic level. The precisely constructed structure delivers maximum efficiency and exposure of the lithiophilic sites. Consequently, the G@COF-1 host reduces Li nucleation overpotentials and favors prolonged lifespan with uniform deposition morphologies, and the G@COF-1-Li composite anode realizes stable cycling in LFP and NCM full cells.

Original languageEnglish
Pages (from-to)253-264
Number of pages12
JournalMatter
Volume4
Issue number1
DOIs
Publication statusPublished - 6 Jan 2021
Externally publishedYes

Keywords

  • MAP3: Understanding
  • covalent organic framework
  • energy electrochemistry
  • lithium dendrites
  • lithium metal anode
  • rechargeable batteries

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