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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
China Building Materials Academy, Beijing 100024 China
received November 19, 2016, received in revised form December 29, 2016, accepted February 21, 2017
Vol. 8, No. 2, Pages 249-254 DOI: 10.4416/JCST2016-00113
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.
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Keywords
Glass-ceramic, crystallization parameters, response surface methodology, optimization
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