Agustina, Anisa Isabella and Skadell, Karl and Kusumocahyo, Samuel P. (2019) Sol-Gel Method for Synthesis of Li+ -Stabilized Na-Β”- Alumina for Solid Electrolytes in Sodium-Based Batteries. Bachelor thesis, Swiss German University.

Preview	Text Anisa Agustina 11504023 TOC.pdf Download (1MB) | Preview
	Text Anisa Agustina 11504023 1.pdf Restricted to Registered users only Download (476kB)
	Text Anisa Agustina 11504023 2.pdf Restricted to Registered users only Download (1MB)
	Text Anisa Agustina 11504023 3.pdf Restricted to Registered users only Download (509kB)
	Text Anisa Agustina 11504023 4.pdf Restricted to Registered users only Download (500kB)
	Text Anisa Agustina 11504023 5.pdf Restricted to Registered users only Download (351kB)
Preview	Text Anisa Agustina 11504023 Ref.pdf Download (334kB) | Preview

Abstract

The fundamental component of sodium-based batteries is Na-β”-alumina ceramics as a solid electrolyte, due to its high sodium-ion conductivity and its role as electrical insulator. In this study, Li+ -stabilized Na-β”-alumina was synthesized by a sol-gel based on the Pechini method. The effects of different sodium content to counterbalance Na2O losses during sintering and different sintering temperatures were evaluated regarding the performance properties of Na-β”-alumina ceramic electrolyte. At first, the synthesized powders were calcined at 1200 °C, granulated, and uniaxially pressed at 100 kN into bars. Thereafter, the bars were sintered between 1500-1700 °C. The samples were systematically evaluated by density measurement, impedance spectroscopy, X-ray diffraction, and Scanning Electron Microscopy. The result shows that all prepared samples exhibits Na-β”-alumina phase with relative density up to 2.96 ± 0.01 g/cm3 , while higher sintering temperature of 1700 °C does not lead to a denser ceramic. The ionic conductivity at 300 °C was up to 0.23 S/cm. It can be stated that, optimum electrolyte performance could be achieved by adjusting the concentration of metal precursor and sintering temperature.

Item Type:	Thesis (Bachelor)
Uncontrolled Keywords:	Sol-Gel Process ; Pechini Method ; Li-Stabilized Na-Β”-Alumina ; Ceramics
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ807 Renewable energy sources
Divisions:	Faculty of Life Sciences and Technology > Department of Sustainable and Energy Environment
Depositing User:	Adityatama Ratangga
Date Deposited:	18 May 2020 05:39
Last Modified:	18 May 2020 05:39
URI:	http://repository.sgu.ac.id/id/eprint/420

Actions (login required)

View Item