The importance of coating's chemical stability in lithium-ion batteries has been demonstrated by this study. It is well known that the mechanical properties determine the cycle life, and chemical stability or chemical degradation rate determines the calendar life. In this study, we used HfO2 coatings prepared by atomic layer deposition as an example to show the chemical stability of the coatings for lithium ion battery electrodes.

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Published in Applied Physics Letters, v. 110, issue 13, 133901, p. 1-5.

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The following article appeared in Applied Physics Letters, v. 110, issue 13, 133901, p. 1-5 and may be found at https://doi.org/10.1063/1.4979108.

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The authors acknowledge the support by the Assistant Secretary for Energy Efficiency and Renewable Energy, Vehicle Technologies Office of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231, Subcontract No. 7056410 under the Batteries for Battery Materials Research (BMR) Program. Partial Financial supports from National Science Foundation (Award No.: 1355438, Powering the Kentucky Bioeconomy for a Sustainable Future) and Department of Energy, Office of Energy Efficiency and Renewable Energy (EERE) (Award No.: DE-EE0007787) are also gratefully acknowledged.