Harnessing Electrochemical-Mechanical Couplings to Improve the Reliability of Solid-State Batteries

Scott Monismith, Cole D. Fincher, Yet Ming Chiang, Jianmin Qu, Rémi Dingreville

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

One key barrier to using lithium-metal anode batteries is that metal dendrites can penetrate solid electrolytes, causing short-circuits and battery failures. It is established that this failure is likely caused by crack propagation due to electrodeposition-induced stresses from lithium metal. This study explores ways to harness these electrochemical-mechanical couplings to control dendrite growth and improve battery reliability using a phase-field model and targeted fracture experiments. The results show that dendrite growth can be effectively mitigated by applying mechanical stresses or tailoring the material's fracture toughness. This study also outlines the requirements for compressive stress to halt or deflect dendrites as a function of the overpotential and discusses the role of microstructure in this process.

Original languageEnglish
Article number2303567
JournalAdvanced Energy Materials
Volume14
Issue number9
DOIs
StatePublished - 1 Mar 2024

Keywords

  • crack propagation
  • dendrite growth
  • Li-metal batteries
  • short circuit
  • solid-state batteries

Fingerprint

Dive into the research topics of 'Harnessing Electrochemical-Mechanical Couplings to Improve the Reliability of Solid-State Batteries'. Together they form a unique fingerprint.

Cite this