Defining Diffusion Pathways in Intercalation Cathode Materials: Some Lessons from V2O5 on Directing Cation Traffic
| Autor: | Justin L. Andrews, Sarbajit Banerjee, Abhishek Parija, Luis R. De Jesus |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Battery (electricity)
Electrode material Materials science Explosive material Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 7. Clean energy 01 natural sciences Engineering physics Cathode 0104 chemical sciences law.invention Fuel Technology 13. Climate action Chemistry (miscellaneous) law Materials Chemistry Electronics Diffusion kinetics Diffusion (business) 0210 nano-technology Capacity loss |
| Zdroj: | ACS Energy Letters. 3:915-931 |
| ISSN: | 2380-8195 |
| DOI: | 10.1021/acsenergylett.8b00156 |
| Popis: | The invention of rechargeable batteries has dramatically changed our landscapes and lives, underpinning the explosive worldwide growth of consumer electronics, ushering in an unprecedented era of electric vehicles, and potentially paving the way for a much greener energy future. Unfortunately, current battery technologies suffer from a number of challenges, e.g., capacity loss and failure upon prolonged cycling, limited ion diffusion kinetics, and a rather sparse palette of high-performing electrode materials. Here, we discuss the origins of diffusion limitations in oxide materials using V2O5 as a model system. In particular, we discuss constrictions in ionic conduction pathways, narrow energy dispersion of conduction band states, and the stabilization and self-trapping of polarons as local phenomena that have substantial implications for introducing multiscale compositional and phase heterogeneities. Strategies for mitigating such limitations are discussed such as reducing diffusion path lengths and the ... |
| Databáze: | OpenAIRE |
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