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Li2MnO3 domain size and current rate dependence on the electrochemical properties of 0.5Li2MnO3·0.5LiCoO2 cathode material
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Metadata
Document Title
Li2MnO3 domain size and current rate dependence on the electrochemical properties of 0.5Li2MnO3·0.5LiCoO2 cathode material
Author
Kaewmala S., Chantrasuwan P., Wiriya N., Srilomsak S., Limphirat W., Limthongkul P., Meethong N.
Name from Authors Collection
Affiliations
Materials Science and Nanotechnology Program, Department of Physics, Faculty of Science, Khon Kaen University, Muang, Khon Kaen, 40002, Thailand; Synchrotron Light Research Institute, Muang, Nakhon Ratchasima, 30000, Thailand; National Metal and Materials Technology Center, National Science and Technology Development Agency, Klong Luang, Pathumthani, 12120, Thailand; Nanotec-KKU Center of Excellence on Advanced Nanomaterials for Energy Production and Storage, Muang, Khon Kaen, 40002, Thailand; Integrated Nanotechnology Research Center (INRC), Faculty of Science, Khon Kaen University, Khon Kaen, Muang, 40002, Thailand
Type
Article
Source Title
Scientific Reports
ISSN
20452322
Year
2017
Volume
7
Issue
1
Open Access
Green
Publisher
Nature Publishing Group
DOI
10.1038/s41598-017-13740-2
Abstract
Layered-layered composite oxides of the form xLi2MnO3·(1-x) LiMO2 (M = Mn, Co, Ni) have received much attention as candidate cathode materials for lithium ion batteries due to their high specific capacity (>250mAh/g) and wide operating voltage range of 2.0-4.8 V. However, the cathode materials of this class generally exhibit large capacity fade upon cycling and poor rate performance caused by structural transformations. Since electrochemical properties of the cathode materials are strongly dependent on their structural characteristics, the roles of these components in 0.5Li2MnO3·0.5LiCoO2 cathode material was the focus of this work. In this work, the influences of Li2MnO3 domain size and current rate on electrochemical properties of 0.5Li2MnO3·0.5LiCoO2 cathodes were studied. Experimental results obtained showed that a large domain size provided higher cycling stability. Furthermore, fast cycling rate was also found to help reduce possible structural changes from layered structure to spinel structure that takes place in continuous cycling. © 2017 The Author(s).
Funding Sponsor
Higher Education Research Promotion; Office of the Higher Education Commission; Khon Kaen University; National Research Council of Thailand; Thailand Graduate Institute of Science and Technology; Ministry of Science and Technology of Thailand
License
CC BY
Rights
Author
Publication Source
Scopus