Structural insights into the formation and voltage degradation of lithium- and manganese-rich layered oxides

Weibo Hua, Suning Wang, Michael Knapp, Steven J. Leake, Anatoliy Senyshyn, Carsten Richter, Murat Yavuz, Joachim R. Binder, Clare P. Grey, Helmut Ehrenberg, Sylvio Indris () and Björn Schwarz
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Weibo Hua: Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT)
Suning Wang: Sichuan University
Michael Knapp: Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT)
Steven J. Leake: ESRF, The European Synchrotron
Anatoliy Senyshyn: Heinz Maier-Leibnitz Zentrum, Technische Universität München
Carsten Richter: ESRF, The European Synchrotron
Murat Yavuz: Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT)
Joachim R. Binder: Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT)
Clare P. Grey: University of Cambridge
Helmut Ehrenberg: Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT)
Sylvio Indris: Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT)
Björn Schwarz: Institute for Applied Materials (IAM), Karlsruhe Institute of Technology (KIT)

Nature Communications, 2019, vol. 10, issue 1, 1-11

Abstract: Abstract One major challenge in the field of lithium-ion batteries is to understand the degradation mechanism of high-energy lithium- and manganese-rich layered cathode materials. Although they can deliver 30 % excess capacity compared with today’s commercially- used cathodes, the so-called voltage decay has been restricting their practical application. In order to unravel the nature of this phenomenon, we have investigated systematically the structural and compositional dependence of manganese-rich lithium insertion compounds on the lithium content provided during synthesis. Structural, electronic and electrochemical characterizations of LixNi0.2Mn0.6Oy with a wide range of lithium contents (0.00 ≤ x ≤ 1.52, 1.07 ≤ y

Date: 2019
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DOI: 10.1038/s41467-019-13240-z

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