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High-Performance, Corrosion-Resistance Sealing Glasses for Primary Lithium Batteries: Preparation, Properties and Applications

Z. Wang, S.J. Hua, W.H. Liu, W.B. Yang, Q. Feng, Q. Feng

Journal of Ceramic Science and Technology, Vol. 14, No. 1 (2023), pp. 31-38

DOI: 10.4416/JCST2022-00015

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Abstract

The SiO2-B2O3-Al2O3-Na2O glass system was selected as the main body. The effects of MgO additions and the ratios of SiO2/B2O3 on the performance of the glasses were investigated. The corrosion mechanism model of glass in the battery was discussed. The findings were that adding MgO can increase the characteristic temperature of the glass, it also can strengthen the glass network structure and improve the corrosion resistance of the glass in the electrolyte. Reducing the ratio of SiO2/B2O3 can improve the performance of the glass. When the ratio of the SiO2/B2O3 reached 3.7, the performance of the glass was best overall. Therefore, when the amount of MgO reached 2 mol% and the ratio of the SiO2/B2O3 reached 3.7, the glass-to-metal seals for lithium primary battery lids exhibited excellent corrosion resistance, with the corroded area of the glass being close to zero, so the glass seal can meet customer and market requirements.

Keywords

Glass, sealing, performance, corrosion resistance.

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