期刊
NEW JOURNAL OF CHEMISTRY
卷 44, 期 24, 页码 10153-10164出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nj06321h
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资金
- French National Research Agency (ANR) as part of the Investissements d'Avenir program [ANR-10-EQPX-45]
Lithium-ion batteries are extensively used for electrochemical energy storage but their performances need to be continuously increased. One solution is to use alternative cathode materials such as iron trifluoride. However, its galvanostatic profile depends on the allotropic phase studied. To look further into such various lithiation mechanisms, quick-operandoXAS has been used upon reduction of anhydrous pyrochlore and rhombohedral iron fluorides. First, fine structural characterization has been conducted by X-Ray Diffraction (XRD),Fe-57 Mossbauer and Pair Distribution Function (PDF) analysis. Then, quickoperandospectra have been interpreted by MCR-ALS chemometric tools, enabling the identification and quantification of the different phases formed upon insertion and conversion of Fe(3+)species.
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