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

• Published in: International journal of applied ceramic technology Vol. 16; no. 1; pp. 287 - 293
• Main Authors: Zhai, Pengtao, Chen, Liugang, Hu, Shuhe, Zhang, Xuan, Ding, Dafei, Li, Hongxia, Li, Suping, Zhu, Lingling, Ye, Guotian
• Format: Journal Article
• Language: English
• Published: Malden Wiley Subscription Services, Inc 01-01-2019
• Subjects: Aluminous refractories; Aluminum oxide; Cathodes; Cordierite; corrosion/corrosion resistance; Cylinders; Electrode materials; Forsterite; Li(NixCoyMnz)O2; Lithium-ion batteries; Magnesite refractories; Magnesium aluminate; Magnesium oxide; Materials selection; Phase composition; refractories; Roasting; Silicon dioxide; Spinel
• ISSN: 1546-542X; 1744-7402
• DOI: 10.1111/ijac.13071

To select refractory major ingredients of saggers for the calcination of Li‐ion battery cathode Li(NixCoyMnz)O2 (LNCM) materials, interactions between MgO‐based refractories, ie, magnesium aluminate (MgAl2O4) spinel, forsterite (2MgO·SiO2), and cordierite (2MgO·2Al2O3·5SiO2), 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 SiO2 and Al2O3 with a higher SiO2 level will suffer a more serious corrosion contacting with LNCM materials.