Moisture-Driven Degradation Pathways in Prussian White Cathode Material for Sodium-Ion Batteries
Dickson O. Ojwang, Mikael Svensson, Christian Njel, Ronnie Mogensen, Ashok S. Menon, Tore Ericsson, Lennart Häggström, Julia Maibach, William R. Brant
Abstract
] and iron oxides. Although the first process leads to loss of capacity, which can be reversed, the second stage of degradation is irreversible. Over time, both processes lead to the formation of a passivating surface layer, which prevents both reversible and irreversible capacity losses. This study thus presents a significant step toward understanding the large performance variations presented in the literature for PW. From this study, strategies aimed at limiting moisture-driven degradation can be designed and their efficacy assessed.
Topics & Concepts
Prussian blueMaterials scienceMoistureElectrochemistryChemical engineeringDegradation (telecommunications)CathodeCapacity lossInorganic chemistryElectrodeComposite materialChemistryPhysical chemistryEngineeringTelecommunicationsComputer scienceAdvancements in Battery MaterialsAdvanced Battery Materials and TechnologiesSupercapacitor Materials and Fabrication