Preparation of battery-grade LiFePO4 by the precipitation method:  a review of speciﬁ c features

Babkin, A.V.; Kubarkov, A.V.; Styuf, E.A.; Sergeyev, V.G.; Drozhzhin, O.A.; Antipov, E.V.

Авторы: Babkin A.V., Kubarkov A.V., Styuf E.A., Sergeyev V.G., Drozhzhin O.A., Antipov E.V.
Журнал: Russian Chemical Bulletin
Том: 73
Номер: 1
Год издания: 2024
Издательство: Springer Nature
Местоположение издательства: Switzerland
Первая страница: 14
Последняя страница: 32
DOI: 10.1007/s11172-024-4119-8
Аннотация: The precipitation method is an effi cient, economically feasible, and reproducible synthetic route to cathode materials for lithium-ion batteries with attractive performance characteristics, in particular, lithium iron phosphate (LiFePO4). This paper reviews the mechanisms of the key steps of the synthesis, namely, precipitation of iron phosphate FePO4 followed by its sintering with a lithium-containing raw material to give the LiFePO4 phase. The most probable interactions determining the kinetics of the precipitation process are considered using the data on the dissociation degree of the reacting components. The inﬂ uence of the nature and concentrations of the commonly used sources of iron (FeSO4, FeCl3, Fe(NO3)3) and phosphorus (H3PO4, NH4H2PO4, (NH4)2HPO4), as well as the precipitation conditions (рН, temperature) on the precipitation effi ciency of FePO4 is analyzed. The eff ect of the nature of the lithium-containing raw material (LiOH, Li2CO3, LiNO3) and the sintering (calcination) temperature on the morphology, phase composi-tion, and electrochemical properties of the resulting LiFePO4 is discussed. The possibil-ity is considered of obtaining spherical particles with high bulk density, which provides high speciﬁ c and volumetric energy density of electrochemical cells. Based on the relation-ships established, optimal parameters for the synthesis of LiFePO4 with preliminary FePO4 precipitation step are proposed.
Добавил в систему: Антипов Евгений Викторович

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Preparation of battery-grade LiFePO4 by the precipitation method: a review of speciﬁ c featuresстатья

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