Monitoring the Formation of Nickel-Poor and Nickel-Rich Oxide Cathode Materials for Lithium-Ion Batteries with Synchrotron Radiation

[Image: see text] The syntheses of Ni-poor (NCM111, LiNi(1/3)Co(1/3)Mn(1/3)O(2)) and Ni-rich (NCM811 LiNi(0.8)Co(0.1)Mn(0.1)O(2)) lithium transition-metal oxides (space group R3̅m) from hydroxide precursors (Ni(1/3)Co(1/3)Mn(1/3)(OH)(2), Ni(0.8)Co(0.1)Mn(0.1)(OH)(2)) are investigated using in situ s...

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Detalles Bibliográficos
Autores principales: Ying, Bixian, Fitzpatrick, Jack R., Teng, Zhenjie, Chen, Tianxiang, Lo, Tsz Woon Benedict, Siozios, Vassilios, Murray, Claire A., Brand, Helen E. A., Day, Sarah, Tang, Chiu C., Weatherup, Robert S., Merz, Michael, Nagel, Peter, Schuppler, Stefan, Winter, Martin, Kleiner, Karin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9979376/
https://www.ncbi.nlm.nih.gov/pubmed/36873624
http://dx.doi.org/10.1021/acs.chemmater.2c02639
Descripción
Sumario:[Image: see text] The syntheses of Ni-poor (NCM111, LiNi(1/3)Co(1/3)Mn(1/3)O(2)) and Ni-rich (NCM811 LiNi(0.8)Co(0.1)Mn(0.1)O(2)) lithium transition-metal oxides (space group R3̅m) from hydroxide precursors (Ni(1/3)Co(1/3)Mn(1/3)(OH)(2), Ni(0.8)Co(0.1)Mn(0.1)(OH)(2)) are investigated using in situ synchrotron powder diffraction and near-edge X-ray absorption fine structure spectroscopy. The development of the layered structure of these two cathode materials proceeds via two utterly different reaction mechanisms. While the synthesis of NCM811 involves a rock salt-type intermediate phase, NCM111 reveals a layered structure throughout the entire synthesis. Moreover, the necessity and the impact of a preannealing step and a high-temperature holding step are discussed.

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