Mesoscale Interactions in Lithium Plating/Dendrite Formation
Abstract
Mesoscale Interactions in Lithium Plating/Dendrite FormationAbstract: Safety of lithium-ion batteries is of critical importance. Lithium-ion batteries are prone to failureat low temperatures and during rapid charging due to electrodeposition of lithium metal whichmay lead to dendrite growth and potentially initiate internal short circuit and safety events. Theproposed research seeks to initiate the foundation toward mesoscale elucidation of thephysicochemical interplay in lithium plating/dendrite formation for lithium-ion batteries. Acomprehensive mesoscale research approach which combines computational modeling andexperimental characterization" techniques will be developed to reveal the mechanisms of lithiumplating and dendrite formation, and seek promising strategies to s""uppress plating and dendritegrowth. In this study, an interfacial model will be employed to investigate the diffusion-reactioninte""rplay on the morphology evolution of dendrite growth and corresponding influence onperformance. In addition, graphite electrode par"ticles suffer from cracking caused by lithiumdiffusion induced stress. The interaction between electrodeposition and cracking will" be studied.Finally, the influence of electrode microstructural heterogeneity on local plating and dendriteformation characteristi""cs will be elucidated. Alongside computational modeling, the chemicalnature and structure of the electrodes and deposited lithium w""ill be characterized by a suite ofexperimental techniques, including X-ray diffraction, microscale computed tomography, Ramanspect"roscopy and X-ray photoelectron spectroscopy. The proposed research is expected to developthe mesoscale foundation of the morphology and mechano-electrochemical interplay in lithiumplating/dendrite formation and the corresponding impact on lithium-ion battery safety.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 29, 2017
- Source ID
- N000141712942
Entities
People
- Partha P. Mukherjee
Organizations
- Office of Naval Research
- United States Navy
- University of Virginia