Dislocation Glide and Climb

Indenbom, V. L.; Saralidze, Z. K.

doi:10.1016/b978-0-444-88773-3.50017-0

Cited by 4 publications

(2 citation statements)

References 39 publications

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“…The directions and modes of dislocations are deduced based on experimental observations from available literatures, 16,24 as shown in Figures 2-4. Stress fields associated with edge dislocations on the ab-plane were calculated based on plane strain assumption, 34 and incorporating orthotropic material properties. 35 To determine the elasticity solutions for the edge dislocation, the boundary value problem were solved via a semi-inverse method by satisfying compatability equations, equilibrium equations, and displacement and traction boundary conditions.…”

Section: Stress and Force Fields Due To Dislocation Interactionsmentioning

confidence: 99%

“…The stress fields manifesting between these dislocations were numerically calculated using Mathematica (Wolfram Research, Champaign, IL). Stress fields resulting from each dislocation are calculated via Equations 1 and 2, in which the assigned locations and the superposition method 34,43 were used to obtain the overall stress distribution to better understand dislocation interactions.…”

Section: Stress and Force Fields Due To Dislocation Interactionsmentioning

confidence: 99%

See 1 more Smart Citation

Dislocation Based Stress Developments in Lithium-Ion Batteries

Huang

Wang

2012

J. Electrochem. Soc.

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It has been suggested that structural failures are the primary factor responsible for the observed rate-capacity fade of lithium-ion batteries. In the present study, we report three different lithium intercalation-induced dislocation mechanisms explaining experimentally observed cracks. We use the theory of elasticity and the superposition method to investigate stress and force fields between multiple dislocations. In most cases, dislocations are not perfectly parallel to one specific axis. Therefore, stress variations for arbitrary Burger's vectors are investigated. The stress fields manifesting between dislocations are numerically calculated and anisotropic material properties of electrodes are employed. The result shows that multiple dislocations are likely to be orthogonal to each other to reduce the total energy. In addition, studies have shown that when the discharging rate is increased, the capacity decreases due to the buildup of the internal elastic/plastic energy. Therefore, the stress fields of dislocation interactions in our study could be used to deduce and suggest the most feasible modes of crack formation and to provide insights into the lost of capacity in LiFePO 4 . Thus, the current study provide links between stress fields and the observed structural failure in lithium-ion batteries.

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