基于应力场的锂离子电池正极多尺度失效研究

Translated title of the contribution: Multi-scale failure behavior of cathode in lithium-ion batteries based on stress field

Ying Chen, Weiling Luan, Haofeng Chen, Xuanchen Zhu

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
15 Downloads (Pure)

Abstract

Lithium-ion batteries are widely used as energy storage and dynamic power, while the capacity life of battery is one of the key factors affecting its further application. The electrochemical-mechanical multi-field coupling effect of the lithium-ion batteries during the cyclic charging and discharging process cause the damage accumulation for the electrode materials, thereby deteriorates the mechanical stability of the electrode materials, leading to multi-scale damage to the electrode materials, ultimately declining the battery life. In this study, the multi-scale failure behavior of LiNixCoyMnzO2 (NCM) cathode materials were summarized through our previous research, and the experimental and simulation analysis method for studying the damage of electrode material are introduced systematically, to provide reference for selecting damage analysis methods at different scales. In addition, the failure mechanisms of NCM cathode materials at the scale of active particles and electrode coating were studied in-depth based on combination of experimental and simulated analysis, including electrochemical experimental of lithium-ion batteries, extended finite element method (XFEM), linear matching method (LMM) framework. The research work provides important guidance for the mechanism analysis of multi-scale failure behavior and microstructure modification of electrode materials.

Translated title of the contributionMulti-scale failure behavior of cathode in lithium-ion batteries based on stress field
Original languageChinese (Traditional)
Pages (from-to)918-924
Number of pages7
JournalWuji Cailiao Xuebao/Journal of Inorganic Materials
Volume37
Issue number8
Early online date16 Feb 2022
DOIs
Publication statusPublished - 20 Aug 2022

Keywords

  • cathode
  • life degradation
  • lithium-ion battery
  • multi-scale failure
  • stress field

Fingerprint

Dive into the research topics of 'Multi-scale failure behavior of cathode in lithium-ion batteries based on stress field'. Together they form a unique fingerprint.

Cite this