publication . Other literature type . 2014

Classifying the mechanisms of electrochemical shock in ion-intercalation materials

Woodford, William; Carter, W. Craig; Chiang, Yet-Ming;
Open Access
  • Published: 02 Oct 2014
  • Publisher: Purdue University
  • Country: United States
Abstract
“Electrochemical shock” – the electrochemical cycling-induced fracture of materials – contributes to impedance growth and performance degradation in ion-intercalation batteries, such as lithium-ion. Using a combination of micromechanical models and acoustic emission experiments, the mechanisms of electrochemical shock are identified, classified, and modeled in targeted model systems with different composition and microstructure. A particular emphasis is placed on mechanical degradation occurring in the first electrochemical cycle. Three distinct mechanisms of electrochemical shock are identified, and a fracture mechanics failure criterion is derived for each mec...
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Other literature type . 2014
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