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NaNbV(PO4)3: Multielectron NASICON-Type Anode Material for Na-Ion Batteries with Excellent Rate Capabilityстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Khasanova N.R., Panin R.V., Cherkashchenko I.R., Zakharkin M.V., Novichkov D.A., Antipov E.V.
- Журнал: ACS applied materials & interfaces
- Том: 15
- Номер: 25
- Год издания: 2023
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 30272
- Последняя страница: 30280
- DOI: 10.1021/acsami.3c04576
- Аннотация: NASICON-type NaNbV(PO4)3 electrode material synthesized by the Pechini sol–gel technique undergoes a reversible three-electron reaction in a Na-ion cell which corresponds to the Nb5+/Nb4+, Nb4+/Nb3+, and V3+/V2+ redox processes and provides a reversible capacity of 180 mAh·g–1. The sodium insertion/extraction takes place in a narrow potential range at an average potential of 1.55 V versus Na+/Na. Structural characterization by operando and ex situ X-ray diffraction disclosed the reversible evolution of the NaNbV(PO4)3 polyhedron framework during cycling, while XANES measurements in the operando regime confirmed the multielectron transfer upon sodium intercalation/extraction into NaNbV(PO4)3. This electrode material demonstrates extended cycling stability and excellent rate capability maintaining the capacity value of 144 mAh·g–1 at 10 C current rates. It can be regarded as a superior anode material suitable for application in high-power and long-life sodium-ion batteries.
- Добавил в систему: Черкащенко Илья Романович
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