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Liquid Phase Deposition of Iron Phosphate Thin Films

Abstract

Liquid phase deposition (LPD) has been applied for the synthesis of iron phosphate thin films as an example of effective methodology for the thin film growth of other polyanionic compounds. Prepared films were highly uniform, free of cracks, pure and successfully applied to cover various substrates such as soda-lime glass and stainless steel. Thickness of these films can easily be tailored in the range of 80 nm to 2.7 μm by deposition time. The chemical equilibria for the hydrolysis of [PF6]- species and formation of iron phosphate were studied by 19F-NMR and 31P-NMR spectroscopies. Hydrolysis of [PF6]- occurs very slowly and longer induction period favors the hydrolysis. As-prepared FePO4.2H2O films on conductive stainless steel substrates are shown to be electrochemically active for the intercalation of Li+ ions. Two polymorphs for FePO4 with crystal structures identical to hexagonal tridymite AlPO4 and monoclinic FeAsO4 were identified upon heat treatment of as-prepared powders.

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Publication details

The article was received on 19 Apr 2018, accepted on 27 Jul 2018 and first published on 28 Jul 2018


Article type: Paper
DOI: 10.1039/C8CE00632F
Citation: CrystEngComm, 2018, Accepted Manuscript
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    Liquid Phase Deposition of Iron Phosphate Thin Films

    E. Mahboobi, A. Yourdkhani and R. Poursalehi, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE00632F

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