Entwistle, T. orcid.org/0000-0002-4980-1365, Sanchez-Perez, E., Murray, G.J. et al. (2 more authors) (2022) Co-precipitation synthesis of nickel-rich cathodes for Li-ion batteries. Energy Reports, 8 (Supplement 11). pp. 67-73. ISSN 2352-4847
Abstract
The preparation of Ni-rich cathode materials is challenging due to the Ni2+ ion sensitivity to oxidation during synthesis. The synthesis conditions during the manufacture of Ni-rich materials such as LiNi0.8Mn0.1Co0.1O2 (NMC811) therefore require stringent control. The co-precipitation step, applied in the synthesis of the metal hydroxide precursor, determines the secondary particle assembly formation, where it is typically desirable to produce uniform, spherical, ∼10μm-diameter structures. A stirred tank reactor is often employed to maintain a constant temperature of 60 °C and a controlled pH of between 10.5 and 11.5 in an inert atmosphere to maintain a high Ni2+/Ni3+ ion ratio. This promotes the formation of an NMC hydroxide precursor (NixMnyCoz(OH)2) which is typically milled with a lithium salt and calcined to form LiNixMnyCozO2 with a layered α-NaFeO2 crystalline structure. This review outlines some of the critical synthetic parameters for the formation of spherical secondary assemblies of metal hydroxide precursors for nickel-rich layered cathodes.
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Copyright, Publisher and Additional Information: | © 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http: //creativecommons.org/licenses/by-nc-nd/4.0/). | ||||||
Keywords: | Lithium-ion; Batteries; NMC; Synthesis; Co-precipitation | ||||||
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Institution: | The University of Sheffield | ||||||
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) | ||||||
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Depositing User: | Symplectic Sheffield | ||||||
Date Deposited: | 27 Apr 2023 13:12 | ||||||
Last Modified: | 27 Apr 2023 13:12 | ||||||
Published Version: | http://dx.doi.org/10.1016/j.egyr.2022.06.110 | ||||||
Status: | Published | ||||||
Publisher: | Elsevier BV | ||||||
Refereed: | Yes | ||||||
Identification Number: | https://doi.org/10.1016/j.egyr.2022.06.110 | ||||||
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