<i>Operando</i> single-particle imaging reveals that asymmetric ion flux contributes to capacity degradation in aged Ni-rich layered cathodes
Zhengyan Lun, Alice J. Merryweather, Amoghavarsha Mahadevegowda, Shrinidhi S. Pandurangi, Chao Xu, Simon M. Fairclough, V.S. Deshpande, N.A. Fleck, Caterina Ducati, Christoph Schnedermann, Akshay Rao, Clare P. Grey
Abstract
Using an operando optical scattering technique, we identify markedly asymmetric Li-ion flux in aged single crystalline NMC cathodes, primarily caused by an uneven growth of rocksalt phase across the particle surface.
Topics & Concepts
Degradation (telecommunications)CathodeFlux (metallurgy)Particle (ecology)Materials scienceIonChemical physicsChemical engineeringChemistryMetallurgyComputer sciencePhysical chemistryGeologyTelecommunicationsEngineeringOrganic chemistryOceanographyElectron and X-Ray Spectroscopy TechniquesSemiconductor materials and devicesAdvancements in Battery Materials