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Issue 11, 2018
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A versatile single molecular precursor for the synthesis of layered oxide cathode materials for Li-ion batteries

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Abstract

A carbonyl-bridged single molecular precursor LiTM(acac)3 [transition metal (TM) = cobalt/manganese/nickel (Co/Mn/Ni), acac = acetylacetone], featuring a one-dimensional chain structure, was designed and applied to achieve the layered oxide cathode materials: LiTMO2 (TM = Ni/Mn/Co, NMC). As examples, layered oxides, primary LiCoO2, binary LiNi0.8Co0.2O2 and ternary LiNi0.5Mn0.3Co0.2O2 were successfully prepared to be used as cathode materials. When they are applied to lithium-ion batteries (LIBs), all exhibit good electrochemical performance because of their unique morphology and great uniformity of element distribution. This versatile precursor is predicted to accommodate many other metal cations, such as aluminum (Al3+), iron (Fe2+), and sodium (Na+), because of the flexibility of organic ligand, which not only facilitates the doping-modification of the NMC system, but also enables synthesis of Na-ion layered oxides. This opens a new direction of research for the synthesis of high-performance layered oxide cathode materials for LIBs.

Graphical abstract: A versatile single molecular precursor for the synthesis of layered oxide cathode materials for Li-ion batteries

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Publication details

The article was received on 04 Nov 2017, accepted on 25 Dec 2017 and first published on 02 Jan 2018


Article type: Communication
DOI: 10.1039/C7CC08505B
Citation: Chem. Commun., 2018,54, 1331-1334
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    A versatile single molecular precursor for the synthesis of layered oxide cathode materials for Li-ion batteries

    M. Li, J. Liu, T. Liu, M. Zhang and F. Pan, Chem. Commun., 2018, 54, 1331
    DOI: 10.1039/C7CC08505B

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