Perspective—Surface Reactions of Electrolyte with LiNi<sub>x</sub>Co<sub>y</sub>Mn<sub>z</sub>O<sub>2</sub> Cathodes for Lithium Ion Batteries
Satu Kristiina Heiskanen, Nina Laszczynski, Brett L. Lucht
Abstract
Layered metal oxides with high nickel content are commonly used cathode materials in commercial lithium ion batteries due to high capacity and lower cost resulting from higher nickel content and lower cobalt content. Cathodes with increased nickel content suffer from rapid capacity fade due to a combination of thickening of the anode solid electrolyte interphase (SEI) and impedance growth on the cathode after extended cycling. While transition metal catalyzed degradation of the anode SEI has been widely proposed as a primary source of capacity loss, we propose that a related acid induced degradation of the anode SEI also occurs.
Topics & Concepts
AnodeElectrolyteCathodeCapacity lossNickelMaterials scienceLithium (medication)Degradation (telecommunications)CobaltInorganic chemistryTransition metalMetalChemical engineeringElectrodeChemistryMetallurgyCatalysisElectrical engineeringBiochemistryEngineeringMedicineEndocrinologyPhysical chemistryAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesAdvanced Battery Technologies Research