Rational design of layered oxide materials for sodium-ion batteries
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Abstract
Sodium-ion batteries have captured widespread attention for grid-scale energy storage owing to the natural abundance of sodium. The performance of such batteries is limited by available electrode materials, especially for sodium-ion layered oxides, motivating the exploration of high compositional diversity. How the composition determines the structural chemistry is decisive for the electrochemical performance but very challenging to predict, especially for complex compositions. We introduce the "cationic potential" that captures the key interactions of layered materials and makes it possible to predict the stacking structures. This is demonstrated through the rational design and preparation of layered electrode materials with improved performance. As the stacking structure determines the functional properties, this methodology offers a solution toward the design of alkali metal layered oxides.
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The record
- Venue
- Science
- Topic
- Advancements in Battery Materials
- Field
- Engineering
- Canadian institutions
- University of Toronto
- Funders
- Beijing Municipal Science and Technology CommissionNederlandse Organisatie voor Wetenschappelijk OnderzoekInnovative Research Group Project of the National Natural Science Foundation of China
- Keywords
- OctahedronLithium (medication)OxideIonSodiumStoichiometryMaterials scienceLithium cobalt oxideMetalTransition metalTrigonal prismatic molecular geometryCobaltInorganic chemistryCobalt oxideTrigonal crystal systemCrystallographyCrystal structureChemistryMetallurgyLithium-ion batteryPhysical chemistryBattery (electricity)ThermodynamicsPhysics
- Has abstract in OpenAlex
- yes