Grain boundary density matters in lithiation performances of aluminum foil anode for lithium ion batteries

Leilei Yang, Wenqi Zhao, Song Sun, Chunyi Xu, Hongtao Sun, Xin Zhang, Gongkai Wang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Alloy foils are highly promising anode materials for high energy density lithium-ion batteries (LIBs). However, limited lithiation sites and inhomogeneous lithiation processes often lead to stress concentration and severe volume changes, resulting in rapid degradation of the electrode structure. In this work, the lithiation behavior and the corresponding structural evolution of aluminum (Al) foil anode are investigated by modulating the grain boundaries (GBs) density. The results show that abundant GBs network endows Al foil with uniform and distributed lithiation sites, and improved lithiation kinetics. The derived uniform volume change can effectively delocalize stress concentration, and hinder the formation of penetrated cracking network, giving rising to good structural stability and prolonged cycle life of Al foil anode. This work can enrich feasible strategies to alleviate the pulverization and serial issues of the metal foil anode by GBs density regulation for high specific energy LIBs.

Original languageEnglish (US)
Article number107179
JournalMaterials Today Communications
Volume37
DOIs
StatePublished - Dec 2023
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Materials Chemistry

Keywords

  • Aluminum foil
  • Anode
  • Grain boundary
  • Lithiation
  • Lithium ion batteries
  • Performances

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