NDLI: A new approach to investigate Li2MnO3 and Li(Ni0.5Mn0.3Co0.2)O2 mixed phase cathode materials

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhu, Yuanyuan Wang, Haiyan Jacob, Clement Jian, Jie Su, Qing
Copyright Year	2014
Abstract	In this work, cathodes consisting of a Mn–rich electrochemically inactive Li2MnO3 phase and a Li(Ni0.5Mn0.3Co0.2)O2 (NMC) phase are processed by pulsed laser deposition (PLD). Different from the traditional bulk/powder synthesis approach, pure materials of the two phases are either uniformly integrated by co-deposition of the two phases or deposited sequentially as a layered structure, to emulate Li-rich mixed phase cathode materials. A high deposition temperature, 750 °C, was used to grow the films on c-cut sapphire and stainless steel substrates. The films either in a random form or in a more controlled multilayer-type, both show excellent film quality. The multilayer composite films show superior capacity, cycling and rate capabilities, with a capacity of 293 mA h g−1 at 0.05 C. This method gives much better control of the Mn content of the cathode, phase purity and combination schemes, i.e., mixing at the atomic level or embedding Li2MnO3 domains of different sizes in the NMC matrix or both. Moreover, this approach can be applied to screen lithium-rich Mn phase and other novel material combinations in a more controlled and expedient manner.
Starting Page	2283
Ending Page	2289
Page Count	7
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	2
Issue Number	7
Journal	Journal of Materials Chemistry A
DOI	10.1039/c3ta14413e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	NMC Oxygen Pulsed laser deposition Cathode Stainless steel Composite material
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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