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Synthesis, structure and electrochemical properties of LiNaCo0.5Fe0.5PO4F fluoride-phosphateстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 24 октября 2016 г.
- Авторы: Fedotov Stanislav S., Kuzovchikov Sergey M., Khasanova Nellie R., Drozhzhin Oleg A., Filimonov Dmitriy S., Karakulina Olesia M., Joke Hadermann, Abakumov Artem M., Antipov Evgeny V.
- Журнал: Journal of Solid State Chemistry
- Том: 242
- Номер: 2
- Год издания: 2016
- Издательство: Elsevier B.V.
- Местоположение издательства: Netherlands
- Первая страница: 70
- Последняя страница: 77
- DOI: 10.1016/j.jssc.2016.02.042
- Аннотация: LiNaCo0.5Fe0.5PO4F fluoride-phosphate was synthesized via conventional solid-state and novel freeze-drying routes. The crystal structure was refined based on neutron powder diffraction (NPD) data and validated by electron diffraction (ED) and high-resolution transmission electron microscopy (HRTEM). The alkali ions are ordered in LiNaCo0.5Fe0.5PO4F and the transition metals jointly occupy the same crystallographic sites. The oxidation state and oxygen coordination environment of the Fe atoms were verified by 57Fe Mössbauer spectroscopy. Electrochemical tests of the LiNaCo0.5Fe0.5PO4F cathode material demonstrated a reversible activity of the Fe3+/Fe2+ redox couple at the electrode potential near 3.4 V and minor activity of the Co3+/Co2+ redox couple over 5 V vs Li/Li+. The material exhibits a good capacity retention in the 2.4÷4.6 V vs Li/Li+ potential range with the delivered discharge capacity of more than 82% (theo.) regarding Fe3+/Fe2+.
- Добавил в систему: Федотов Станислав Сергеевич