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DOI	10.1039/c7ee03195e
	Lithium manganese oxyfluoride as a new cathode material exhibiting oxygen redox
	House R.A.; Jin L.; Maitra U.; Tsuruta K.; Somerville J.W.; Förstermann D.P.; Massel F.; Duda L.; Roberts M.R.; Bruce P.G.
发表日期	2018
ISSN	17545692
起始页码	926
结束页码	932
卷号	11 期号:4
英文摘要	The quantity of charge stored in transition metal oxide intercalation cathodes for Li or Na batteries is not limited by transition metal redox reactions but can also access redox reactions on O; examples include Li1.2Ni0.13Mn0.54Co0.13O2, Li2Ru0.75Sn0.25O3, Li1.2Nb0.3Mn0.4O2, Na2RuO3 and Na2/3Mg0.28Mn0.72O2. Here we show that oxyfluorides can also exhibit charge storage by O-redox. We report the discovery of lithium manganese oxyfluoride, specifically the composition, Li1.9Mn0.95O2.05F0.95, with a high capacity to store charge of 280 mA h g-1 (corresponding to 960 W h kg-1) of which almost half, 130 mA h g-1, arises from O-redox. This material has a disordered cubic rocksalt structure and the voltage-composition curve is significantly more reversible compared with ordered Li-rich layered cathodes. Unlike lithium manganese oxides such as the ordered layered rocksalt Li2MnO3, Li1.9Mn0.95O2.05F0.95 does not exhibit O loss from the lattice. The material is synthesised using a simple, one-pot mechanochemical procedure. © 2018 The Royal Society of Chemistry.
英文关键词	Cathodes; Cobalt compounds; Lithium compounds; Magnesium compounds; Manganese oxide; Nickel compounds; Niobium compounds; Oxygen; Redox reactions; Ruthenium compounds; Sodium compounds; Tin compounds; Transition metal oxides; Transition metals; Charge storage; High capacity; Intercalation cathodes; Layered cathode; Lithium manganese oxide; Mechanochemicals; New cathode material; Rock-salt structure; Fluorine compounds; chemical composition; electrode; lithium; manganese; manganese oxide; oxygen; redox conditions; transition element
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190278
作者单位	Departments of Materials and Chemistry, University of Oxford, Parks Road, Oxford, OX1 3PH, United Kingdom; Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo, Hyogo, 679-5198, Japan; Department of Physics and Astronomy, Division of Molecular and Condensed Matter Physics, Uppsala University, Box 516, Uppsala, S-751 20, Sweden
推荐引用方式 GB/T 7714	House R.A.,Jin L.,Maitra U.,et al. Lithium manganese oxyfluoride as a new cathode material exhibiting oxygen redox[J],2018,11(4).
APA	House R.A..,Jin L..,Maitra U..,Tsuruta K..,Somerville J.W..,...&Bruce P.G..(2018).Lithium manganese oxyfluoride as a new cathode material exhibiting oxygen redox.Energy & Environmental Science,11(4).
MLA	House R.A.,et al."Lithium manganese oxyfluoride as a new cathode material exhibiting oxygen redox".Energy & Environmental Science 11.4(2018).