Understanding of the Mechanism and Kinetics of the Fast SolidState Reaction between NaF and VPO4 to Form Na3V2(PO4)2F3 Научная публикация
| Журнал |
Inorganic Chemistry
ISSN: 0020-1669 , E-ISSN: 1520-510X |
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| Вых. Данные | Год: 2022, Том: 61, Номер: 26, Страницы: 10023-10035 Страниц : 13 DOI: 10.1021/acs.inorgchem.2c00951 | ||||
| Ключевые слова | Activation energy; Ball milling; Cathodes; Differential scanning calorimetry; Fluorine compounds; High resolution transmission electron microscopy; Rate constants; Scanning electron microscopy; Sodium compounds; Sodium-ion batteries; Solid state reactions | ||||
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Реферат:
The solid-state reaction between NaF and VPO4 is widely used to produce Na3V2(PO4)2F3, a promising cathode material for sodium-ion batteries. In the present work, the mechanism and kinetics of the reaction between NaF and VPO4 were investigated, and the effect of preliminary high-energy ball milling (HEBM) was studied using in situ time-resolved synchrotron powder X-ray diffraction, in situ transmission electron microscopy, differential scanning calorimetry, etc. The reaction was attributed to a “dimensional reduction” formalism; it proceeds quickly with the unilateral diffusion of Na+ and F– ions into VPO4 particles as a limiting stage. The use of HEBM leads to the mechanism corresponding to the third-order reaction model and accelerates the interaction. The rate constant k increases from 3.5 × 10–5 to 3.4 × 10–3 s–1, and diffusion coefficient D increases from 2 × 10–14 to 4 × 10–13 cm2 s–1 when HEBM is used. The calculated apparent activation energy is ∼290 kJ mol–1. The electrochemical properties of the as-prepared Na3V2(PO4)2F3 are not inferior to the properties of the materials prepared by conventional solid-state synthesis.
Библиографическая ссылка:
Semykina D.O.
, Sharafutdinov M.R.
, Kosova N.V.
Understanding of the Mechanism and Kinetics of the Fast SolidState Reaction between NaF and VPO4 to Form Na3V2(PO4)2F3
Inorganic Chemistry. 2022. V.61. N26. P.10023-10035. DOI: 10.1021/acs.inorgchem.2c00951 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex СКИФ ID
Understanding of the Mechanism and Kinetics of the Fast SolidState Reaction between NaF and VPO4 to Form Na3V2(PO4)2F3
Inorganic Chemistry. 2022. V.61. N26. P.10023-10035. DOI: 10.1021/acs.inorgchem.2c00951 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex СКИФ ID
Даты:
| Поступила в редакцию: | 23 мар. 2022 г. |
| Опубликована online: | 24 июн. 2022 г. |
| Опубликована в печати: | 4 июл. 2022 г. |
Идентификаторы БД:
| Web of science: | WOS:000818783000001 |
| Scopus: | 2-s2.0-85134083928 |
| РИНЦ: | 54496781 |
| Chemical Abstracts: | 2022:1591664 |
| Chemical Abstracts (print): | 180:103904 |
| PMID (PubMed): | 35748412 |
| OpenAlex: | W4283383575 |
| СКИФ ID: | 2362 |