Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 37, Issue 9, Pages 3213-3217Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2017.03.048
Keywords
Lithium nickel manganese cobalt oxide; Mechanical properties; Physical properties; Pulse echo technique; Nano indentation
Categories
Funding
- Advanced Research Projects Agency-Energy [DE-AR0000653]
- University of Michigan
- U.S. Army Research Laboratory
- National Research Foundation (NRF) of Korea [2014R1A2A1A11052513, 2009-0093814]
- National Research Foundation of Korea [2014R1A2A1A11052513, 2009-0093814] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Lithium Nickel Manganese Cobalt Oxide (NMC) is one of the most common oxide cathode materials for Li-ion batteries. NMC is also under consideration for use in all solid-state batteries. However, differences in the coefficients of thermal expansion (CTE) between NMC and the solid electrolyte during composite electrode fabrication and differential expansion and contraction during electrochemical cycling will cause stresses possibly resulting in electrode fracture and battery capacity fade. As a consequence, we hot pressed phase-pure polycrystalline NMC with controlled density and accurately measured the mechanical (elastic modulus, shear modulus, Poisson's ratio and nanoindentation hardness) and physical properties (CTE and thermal conductivity). We believe that this is the first report of the mechanical and physical properties of commercially available NMC and these experimental data are important to predict or increase the cycle life of NMC as a cathode material for state-of-the-art Li-ion and advanced solid-state batteries. (C) 2017 Elsevier Ltd. All rights reserved.
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