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Structural evolution in LiFePO4-based battery materials: in-situ and ex-situ time-of-flight neutron diffraction studyстатья
Статья опубликована в высокорейтинговом журнале
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: 14 января 2015 г.
- Авторы: Bobrikov I.A., Balagurov A.M., Chih-Wei Hu, Chih-Hao Lee, Sangaa Deleg
- Журнал: Journal of Power Sources
- Том: 258
- Год издания: 2014
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 356
- Последняя страница: 364
- Аннотация: Neutron diffraction has been used for in-situ studying of the chargee-discharge processes in commercial lithium batteries with LiFePO4 (LFP) and graphite electrodes. The diffraction data were obtained with time-of-flight diffractometer in the process of three complete chargee-discharge cycles performed at a low rate (0.1 C) at room temperature. The experimental data allowed detailed tracing of the multistage process of Li insertion into graphite followed by the formation of several LiCn phases, as well as the reversible transition of LiFePO4 - FePO4. A comparison of the chargee-discharge processes in a battery with a pure LFP cathode and LFP containing 1% of vanadium (LFPV) is made. In the second case, an evidently larger part of the anode material passes into the final LiC6 state. Analysis of the diffraction patterns of LFP and LFPV powders revealed a marked shrinkage of crystallite size in the LFPV case, which correlates with better electrochemical properties of LFPV compared to LFP.
- Добавил в систему: Балагуров Анатолий Михайлович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Bobrikov-14_JPS_TOF_LiFePO4.pdf | 4,3 МБ | 14 января 2015 [ambalagurov] |