Structural design and corrosion resistance of hibonite-cordierite saggar composite layer

摘要

The saggar plays a crucial role as a carrier during the solid-state sintering process of Li-ion battery cathode materials. In order to enhance its resistance against alkali erosion, the study utilized hibonite, cordierite, alpha-Al2O3, and zirconia as primary raw materials, along with Ca(OH)(2) as an additive, to fabricate a composite-layered hibonite-cordierite saggar. Our investigation delves into the sintering bond formation between the composite layer and the saggar matrix and, more crucially, scrutinizes the saggar's erosion resistance against Li-ion battery cathode materials. The outcome underscores the groundbreaking impact of a 3% Ca(OH)(2) infusion on in situ anorthite formation within the composite layer, ushering in a robust integration between the composite layer and the saggar matrix. Moreover, this unique anorthite formation establishes a dense isolating shield along the periphery of hibonite particles, effectively impeding the corrosive reaction between the cathode material and the saggar, thus enhancing the saggar's resistance to corrosion.

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