Suppressed ionic contamination of LiNi0.5Mn1.5O4 with a Pt/ITO/stainless steel multilayer current collector

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LiNi0.5Mn1.5O4 (LNMO) cathode thin films were prepared on Pt-coated stainless steel (SS) substrates by radio frequency magnetron sputtering. The layers were post-annealed at 500, 600 and 700 degrees C to study the impact of thermal treatment on the crystallization of the cathode material. As the annealing temperature increases, interdiffusion occurs between the substrate and the LNMO film, which degrades the electrochemical properties of the cathode film. In order to mitigate this problem, an In-Sn-O (ITO) interlayer was introduced between Pt and the SS substrate. The ITO film is electrochemically stable and acts as an effective diffusion barrier between the substrate and the LNMO layer, which results in improved electrochemical properties of the LNMO film for a lithium ion battery.
Publisher
ELSEVIER SCI LTD
Issue Date
2018-11
Language
English
Article Type
Article
Citation

CERAMICS INTERNATIONAL, v.44, no.16, pp.20093 - 20104

ISSN
0272-8842
DOI
10.1016/j.ceramint.2018.07.284
URI
http://hdl.handle.net/10203/246507
Appears in Collection
MS-Journal Papers(저널논문)
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