Effect of Al and Fe Doping on the Electrochemical Behavior of Li1.2Ni0.133Mn0.534Co0.133O2 Li-Rich Cathode Material

Medvedeva, A.; Makhonina, E.; Pechen, L.; Politov, Y.; Rumyantsev, A.; Koshtyal, Y.; Goloveshkin, A.; Maslakov, K.; Eremenko, I.

Авторы: Medvedeva Anna, Makhonina Elena, Pechen Lidia, Politov Yury, Rumyantsev Aleksander, Koshtyal Yury, Goloveshkin Alexander, Maslakov Konstantin, Eremenko Igor
Журнал: Materials
Том: 15
Номер: 22
Год издания: 2022
Издательство: MDPI
Местоположение издательства: Basel, Switzerland
Номер статьи: 8225
DOI: 10.3390/ma15228225
Аннотация: This article studies the doping of Li-rich cathode materials. Aluminum and iron were chosen as dopants. Li-rich cathode materials for lithium-ion batteries, which were composed of Li1.2Ni0.133Mn0.534Co0.133O2 with a partial replacement of cobalt (2 at %) by iron and aluminum, were synthesized. The dopants were introduced at the precursor synthesis stage by co-precipitation. The presence of Fe and Al in the composition of the synthesized samples was proved by inductively coupled plasma mass spectrometry, X-ray diffraction analysis and X-ray microanalysis. The cathode materials were tested electrochemically. The incorporation of Al and Fe into the structure of lithium-enriched materials improved the cyclability and reduced the voltage fade of the cathodes. An analysis of the electrochemical data showed that the structural changes that occur in the initial cycles are different for the doped and starting materials and affect their cycling stability. The partial cation substitution suppressed the unfavorable phase transition to lower-voltage structures and improved the electrochemical performance of the materials under study.
Добавил в систему: Маслаков Константин Игоревич

	ИСТИНА	Войти в систему Регистрация
	ИСТИНА ИНХС РАН
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ИСТИНА ИНХС РАН

Effect of Al and Fe Doping on the Electrochemical Behavior of Li1.2Ni0.133Mn0.534Co0.133O2 Li-Rich Cathode Materialстатья

Прикрепленные файлы