Understanding of the Mechanism and Kinetics of the Fast SolidState Reaction between NaF and VPO4 to Form Na3V2(PO4)2F3 Full article
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Inorganic Chemistry
ISSN: 0020-1669 , E-ISSN: 1520-510X |
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| Output data | Year: 2022, Volume: 61, Number: 26, Pages: 10023-10035 Pages count : 13 DOI: 10.1021/acs.inorgchem.2c00951 | ||||
| Tags | 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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Abstract:
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.
Cite:
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 ANCAN PMID OpenAlex publication_identifier_short.sciact_skif_identifier_type
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 ANCAN PMID OpenAlex publication_identifier_short.sciact_skif_identifier_type
Dates:
| Submitted: | Mar 23, 2022 |
| Published online: | Jun 24, 2022 |
| Published print: | Jul 4, 2022 |
Identifiers:
| Web of science: | WOS:000818783000001 |
| Scopus: | 2-s2.0-85134083928 |
| Elibrary: | 54496781 |
| Chemical Abstracts: | 2022:1591664 |
| Chemical Abstracts (print): | 180:103904 |
| PMID: | 35748412 |
| OpenAlex: | W4283383575 |
| publication_identifier.sciact_skif_identifier_type: | 2362 |