|
ИСТИНА |
Войти в систему Регистрация |
ФНКЦ РР |
||
Iron oxide @ gold nanoparticles: synthesis, properties and potential use as anode materials for lithium-ion batteriesстатья
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: 21 октября 2020 г.
- Авторы: Fadeev M.S., Kozlovskiy A.L., Korolkov I.V., Egizbek K.B., Nazarova A., Chudoba D., Rusakov V.S., Zdorovets M.V.
- Журнал: Colloids and Surfaces A: Physicochemical and Engineering Aspects
- Том: 603
- Год издания: 2020
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 125178
- DOI: 10.1016/j.colsurfa.2020.125178
- Аннотация: This paper presents the results of the study of iron oxide/gold composites using powder X-ray diffractometry (XRD), scanning (SEM) and transmission (ТЕМ) electron microscopy, laser diffraction analysis (LDA) and Mossbauer spectroscopy (MS), as well as the results of their electrochemical tests as аn anode material for lithium-ion batteries. It is established that as а result of using the rwo-stage synthesis method, the obtained composites are iron oxide@gold core-shell nanoparticles (NPs). After the first stage of chemical synthe sis the init ial non-gold-coated iron oxide NPs were the magnetite (Fe3O4)/maghemite (y-Fe2O3) mixtures (molar fraction of maghemite - 0.49) and/or the magnetite-maghemite solid solutions (Fe3-yO4) (у ~ 0.17). After the second stage the coating of iron oxides with gold the nanoparticle cores were mainly maghemite. SEM, ТЕМ, XRD and LDA measurements revealed that the average size of iron oxide NPs is ~18 nm, and iron oxide@gold NPs is ~25 nm. The Mossbauer spectroscopy allowed us to determine the fraction of Fe atoms in the form of maghemite in initial non-gold-coated iron oxide NPs (0.47 ± 0.02) and in iron oxide@gold NPs (О.97 ± 0.03).
- Добавил в систему: Русаков Вячеслав Серафимович