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Response Surface Methodology for Optimization of the Synthesis of Lithium Ion Conductor Glass-Ceramic Electrolyte

H. Kun, Z. Chengkui, L. Baoying, W. Yanhang, H. Bin, C. Jiang

Journal of Ceramic Science and Technology, Vol. 8, No. 2 (2017), pp. 249-254

DOI: 10.4416/JCST2016-00113

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Abstract

In this work, response surface methodology (RSM) based on five-level, three-variable and central composite design (CCD) was used to optimize the synthesis of Li2O-Al2O3-GeO2-P2O5 glass-ceramic. The effects of three independent variables, i.e. crystallization temperature, crystallization time and heating rate on the conductivity of the glass-ceramic were analyzed. The optimum conditions were found to be at the crystallization temperature of 845 °C, crystallization time of 8 h and heating rate of 3.3 K/min. In the process optimization, the highest conductivity of the glass-ceramic reached 6.3×10-4 S/cm, suggesting that it is a promising solid electrolyte for practical application in lithium/water batteries.

Keywords

Glass-ceramic, crystallization parameters, response surface methodology, optimization

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