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Journal of Electroceramics

Published in:

01-10-2012

Enhanced electrochemical properties of Li[Ni_0.5Co_0.2Mn_0.3]O₂ cathode by surface coating using LaF₃ and MgF₂

Authors: Han Gab Song, Seuk Buom Kim, Yong Joon Park

Published in: Journal of Electroceramics | Issue 2/2012

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Abstract

LaF₃ and MgF₂ were introduced for the surface modification of an Li[Ni_0.5Co_0.2Mn_0.3]O₂ electrode. The rate capability, cyclic performance, phase stability at a high voltage range, and thermal stability of pristine and coated electrodes were characterized. Surface modification with both coating materials, LaF₃ and MgF₂, enhanced the rate capability and cyclic performance. The LaF₃ and MgF₂ coatings also suppressed the structural instability during cycling in the high voltage range (4.8–3.0 V). This implies that both fluoride coating layers successfully protected the Li[Ni_0.5Co_0.2Mn_0.3]O₂ electrode from the acidic electrolyte. However, the MgF₂ coating improved the thermal stability of the Li[Ni_0.5Co_0.2Mn_0.3]O₂ electrode more effectively than the LaF₃ coating.

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Title: Enhanced electrochemical properties of Li[Ni0.5Co0.2Mn0.3]O2 cathode by surface coating using LaF3 and MgF2
Authors: Han Gab Song
Seuk Buom Kim
Yong Joon Park
Publication date: 01-10-2012
Publisher: Springer US
Published in: Journal of Electroceramics / Issue 2/2012
Print ISSN: 1385-3449
Electronic ISSN: 1573-8663
DOI: https://doi.org/10.1007/s10832-012-9747-y

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