Comparison of interactions of MgO-based refractories with Li-ion battery cathode materials during calcination

© 2018 The American Ceramic Society To select refractory major ingredients of saggers for the calcination of Li-ion battery cathode Li(Ni x Co y Mn z )O 2 (LNCM) materials, interactions between MgO-based refractories, ie, magnesium aluminate (MgAl 2 O 4 ) spinel, forsterite (2MgO·SiO 2 ), and cordierite (2MgO·2Al 2 O 3 ·5SiO 2 ), and LNCM materials were compared respectively via refractory-LNCM precursor cylinder testing in lab-scale. The phase composition and microstructure evolution of the calcined cylinders were characterized and resulted in comprehensive understanding and comparing of degradation of the MgO-based refractories. The results reveal that cordierite is severely corroded, whereas magnesium-aluminate spinel reacts little with LNCM materials. Refractories contain both SiO 2 and Al 2 O 3 with a higher SiO 2 level will suffer a more serious corrosion contacting with LNCM materials.

Publication year:2019

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Authors:International

Authors from:Higher Education