The Effects of Internal Stress and Lithium Transport on Fracture in Storage Materials in Lithium-Ion Batteries
Abstract
Fracture of storage particles is considered to be one of the major reasons for capacity fade and increasing power loss in Li-ion batteries. In this work, we tackle the problem by merging a coupled model of mechanical stress and diffusion of Li-ions with a phase field description of an evolving crack. The novel approach allows us to study the evolution of the Li concentration together with the initiation and growth of a crack in an arbitrary geometry and without presuming a specific crack path.
Keywords
Lithium-Diffusion; Lithium-Ionen-BatterienCrack Growth; Storage Particles; Risswachstum; Phasefield; Li-Diffusion; Phasenfeld; Li-Ion-Batteries; SpeicherpartikelISBN
9783731504559Publisher
KIT Scientific PublishingPublisher website
http://www.ksp.kit.edu/Publication date and place
2016Series
Schriftenreihe des Instituts für Angewandte Materialien, Karlsruher Institut für Technologie,Classification
Technology: general issues