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Yang-Kook Sun, Min-Joon Lee, Chong S. Yoon, Jusef Hassoun, Khalil Amine and Bruno Scrosati Batteries: The Role of AlF3 Coatings in Improving Electrochemical Cycling of Li-Enriched Nickel-Manganese Oxide Electrodes for Li-Ion Batteries (Adv. Mater. 9/2012) Advanced Materials 24

Article first published online: 24 FEB 2012 | DOI: 10.1002/adma.201290044

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Y.-K. Sun, C. S. Yoon, B. Scrosati and co-workers report on page 1192 the role of an AlF3-coating layer on Li-enriched cathode materials, which not only improves electrochemical performances but also thermal stability. These improvements are attributed to the trans-formation of the initial layer (Li2MnO3) to a spinel phase, induced by the Li chemical-leaching effect of the AlF3 coating layer. The spinel phase transferred from the layer on the Li-enriched electrodes is able to negate the previous shortcomings of these designs.

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