Study on precipitation processes and phase transformation kinetics of iron phosphate dihydrate
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Author(s)
Type
Journal Article
Abstract
The process of the phase transformation from amorphous to crystalline FePO4·2H2O was studied in this research. It was found that Fe and P are predominantly present as FeHPO4+ and FeH2PO42+ and an induction period exists during the transition from amorphous to monoclinic form. The induction period and the time required for phase transformation were shortened with the increased temperature. Phase transformation could be kinetically described by the Johnson–Mehl–Avrami (JMA) dynamics model. The dissolution rate of amorphous FePO4·2H2O is the rate-limiting step of this process. the activation energy of phase transformation is calculated to be 9.619 kJ/mol. The results in this study provided more guidelines for the regulation of FePO4·2H2O precursors by precipitation method.
Date Issued
2022-10-01
Date Acceptance
2022-09-22
Citation
Crystals, 2022, 12 (10), pp.1-14
ISSN
2073-4352
Publisher
MDPI AG
Start Page
1
End Page
14
Journal / Book Title
Crystals
Volume
12
Issue
10
Copyright Statement
Copyright: © 2022 by the authors.
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
License URL
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000875926500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
Science & Technology
Physical Sciences
Technology
Crystallography
Materials Science, Multidisciplinary
Materials Science
precipitation process
iron phosphate dihydrate
Johnson-Mehl-Avrami (JMA) dynamics model
CATHODE MATERIAL
CRYSTAL-STRUCTURE
FEPO4
PERFORMANCE
LIFEPO4
MORPHOLOGY
COMPOSITES
SURFACE
SIZE
FTIR
Publication Status
Published
Article Number
ARTN 1369
Date Publish Online
2022-09-27